As Torque Patents (Class 73/114.15)
  • Patent number: 10330569
    Abstract: Disclosed is a method for determining the engine torque delivered by a multi-cylinder engine, including the following steps: determining the angular velocity of the crankshaft and measuring the cylinder pressure over an angular window of combustion in a first cylinder fitted with a cylinder pressure sensor; calculating the value of the engine torque (TQIref) in this window; determining a current transfer function for the learning of the torque, so as to estimate the torque TQImdl(cyl)) in a second cylinder not fitted with a cylinder pressure sensor, from the product of: the engine torque calculated over the angular window of the first cylinder, a ratio between: the angular velocity of the crankshaft over an angular window of combustion of the second cylinder, and the angular velocity of the crankshaft over the window of combustion of the first cylinder.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: June 25, 2019
    Assignees: CONTINENTAL AUTOMOTIVE FRANCE, CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Bertrand Varoquie, Camille Denert
  • Patent number: 10215111
    Abstract: To provide a controller and a control method for an internal combustion engine capable of estimating the cylinder internal pressure of the combustion cylinder accurately in consideration of the torsional vibration of the crankshaft. A controller for an internal combustion engine includes a torsional torque calculator that calculates a value which has an amplitude of the maximum value of torsional vibration torque calculated based on a crank angle acceleration in the combustion period, and vibrates with a preliminarily set natural angular frequency, as a torsional vibration torque in the combustion period; and a cylinder internal pressure estimator that calculates a combustion gas pressure torque, by use of the equation of motion of the rotation system of the crankshaft, based on the crank angle, the crank angle acceleration, and the torsional vibration torque, and estimates the cylinder internal pressure of the combustion cylinder based on the combustion gas pressure torque.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: February 26, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hideki Hagari, Kazuhiro Tokuyama
  • Patent number: 10202926
    Abstract: Various methods and systems are provided for diagnosing an engine component based on a measured engine speed during an engine shutdown event. As one embodiment, a method for an engine includes measuring an engine speed drop rate, via an engine speed sensor, during an engine shutdown event; and indicating a change in performance of one of the engine speed sensor or an additional engine component in response to the measured engine speed drop rate deviating from a reference engine speed drop rate by a pre-set or pre-defined threshold rate.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: February 12, 2019
    Assignee: GE Global Sourcing LLC
    Inventors: Shailesh Nair, Pradheepram Ottikkutti
  • Patent number: 9612179
    Abstract: Disclosed is a method of testing a vehicle having a fifth wheel and an apparatus for restraining the vehicle. The method of testing the vehicle may include moving the vehicle on a dynamometer and inserting a coupling structure into the fifth wheel to secure the vehicle during a test. In accordance with example embodiments, the apparatus may include a boom having a pin connection and a connecting structure arranged at an end of the boom, the connecting structure being configured to couple to the fifth wheel of the vehicle.
    Type: Grant
    Filed: May 14, 2014
    Date of Patent: April 4, 2017
    Inventor: Albert Hemerson
  • Patent number: 9511760
    Abstract: A method is provided for monitoring torques, including the following steps in a first processing unit: Receiving a delta torque; in a first calculating process, calculating a first setpoint torque and a second setpoint torque from the delta torque; in a second calculating process, checking whether a difference of the first setpoint torque and of the second setpoint torque is less than, or equal to the delta torque, the second calculating process being carried out independently of the first calculating process; and output of the first setpoint torque and the second setpoint torque, only if the difference of the first and the second setpoint torque is less than, or equal to the delta torque.
    Type: Grant
    Filed: February 4, 2015
    Date of Patent: December 6, 2016
    Assignee: Robert Bosch GmbH
    Inventors: Andreas Heyl, Astrid Rall
  • Patent number: 9371852
    Abstract: An electronic screw with an electronic torque display is disclosed. The screw includes a body and a torque sensing element. The body has a threading head, a shank connected to the threading head and a recess located on the side wall of the shank. The torque sensing element is disposed in the recess and detected the torque value of the electronic screw. The torque sensing element is electrically connected to the electronic torque display, wherein the electronic torque display displays the torque value that detected from the torque sensing element.
    Type: Grant
    Filed: August 28, 2014
    Date of Patent: June 21, 2016
    Assignee: KABO TOOL COMPANY
    Inventor: Chih-Ching Hsieh
  • Patent number: 9038446
    Abstract: The disclosure relates to a method and apparatus of measuring torque. The method and apparatus entails measuring the torque generated by an automobile engine using a torque sensor replacing the driver side engine mount. A spring component of the torque sensor tares the weight of the engine and a hydraulic pressure gauge measures the lifting forces acting on a pressure receiver of the torque sensor.
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: May 26, 2015
    Inventor: Larry D. Sinclair
  • Publication number: 20150121998
    Abstract: The disclosure relates to a method and apparatus of measuring torque. The method and apparatus entails measuring the torque generated by an automobile engine using a torque sensor replacing the driver side engine mount. A spring component of the torque sensor tares the weight of the engine and a hydraulic pressure gauge measures the lifting forces acting on a pressure receiver of the torque sensor.
    Type: Application
    Filed: November 6, 2013
    Publication date: May 7, 2015
    Inventor: Larry D. Sinclair
  • Publication number: 20140200794
    Abstract: Systems and methods for learning torque estimate errors and updating torque estimation models are presented. In one example, torque errors are learned during an engine shut-down, after a disconnect clutch coupled between an engine and an electric machine has been released. An updated torque estimation model is then used to control torque during subsequent engine operation to improve drive feel and vehicle performance.
    Type: Application
    Filed: March 18, 2014
    Publication date: July 17, 2014
    Applicant: Ford Global Technologies, LLC
    Inventors: Alex O'Connor Gibson, Mark Steven Yamazaki, Jeffrey Allen Doering, Dennis Craig Reed, Adam Nathan Banker
  • Patent number: 8700247
    Abstract: A hybrid powertrain includes an engine, an electric machine, and a transmission. A method to control the powertrain includes monitoring operation of the powertrain, determining whether conditions necessary for growl to occur excluding motor torque and engine torque are present, and if the conditions are present controlling the powertrain based upon avoiding a powertrain operating region wherein the growl is enabled.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: April 15, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Jeremy Wise, Chihang Lin, Anthony H. Heap
  • Patent number: 8695408
    Abstract: A device for measuring torque of an engine has a torque detecting section for detecting an output torque of engine cylinders, a rotation detecting section for detecting a rotation angle of a rotating section to which a piston of each cylinder is connected, a top mark detecting section for detecting the rotation angle of the piston of each cylinder, and a torque calculating section for estimating torque characteristics of each cylinder on the basis of the following: the signal of the output torque, the rotation angle of the rotating section, the rotation angle of the piston of each cylinder, the number of the cylinders of the engine, and the number of cycles of the engine. The torque calculating section estimates, as torque characteristics of each cylinder, either peak torque of each cylinder or the combustion angle at which the peak torque is attained.
    Type: Grant
    Filed: July 30, 2009
    Date of Patent: April 15, 2014
    Assignee: Fuchino Co., Ltd.
    Inventor: Kozo Fuchino
  • Publication number: 20130333455
    Abstract: A method is disclosed for monitoring the state of a piezoelectric injector of the fuel injection system of an internal combustion engine, the piezoelectric injector having a piezoelectric actuator and a nozzle needle that can be moved by said piezoelectric actuator. The piezoelectric injector can be operated in a partial-stroke mode and a full-stroke mode. In the partial-stroke mode, the curve of an electrical parameter over time is recorded, the maximum value of the curve is determined, a constant parameter value that arises after the presence of the maximum value is determined, the duration between the presence of the maximum value and the reaching of the constant parameter value is determined, the difference between the maximum value and the constant parameter value is determined, and conclusions about the state of the piezoelectric injector are drawn on the basis of the determined duration and the determined difference.
    Type: Application
    Filed: February 21, 2012
    Publication date: December 19, 2013
    Inventors: Robert Hoffmann, Michael Katzenberger, Nicolas Nozeran
  • Patent number: 8528388
    Abstract: An engine control system includes an engine that outputs a rotation of a crankshaft through a torsional damper; a calculation portion that calculates a value of engine torque based on an angular acceleration of the crankshaft and a moment of inertia of the crankshaft; and a correction portion that calculates a correction value based on a torsional angle of the torsional damper, and corrects the calculated value of the engine torque using the correction value.
    Type: Grant
    Filed: January 15, 2009
    Date of Patent: September 10, 2013
    Assignees: Toyota Jidosha Kabushiki Kaisha, Nippon Soken, Inc
    Inventors: Kentaro Yutani, Takanobu Kawano, Yoshiaki Atsumi, Hiroshi Kanai, Koji Miwa
  • Patent number: 8459105
    Abstract: A fuel injector diagnostic is disclosed. In one example, the diagnostic can determine if that amount of fuel injected or the timing of start of injection is degraded. Thus, the fuel injector diagnostic method can distinguish between different types of injector degradation.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: June 11, 2013
    Assignee: Ford Global Technologies, LLC
    Inventors: Yong-Wha Kim, Michiel J. Van Nieuwstadt, In Kwang Yoo
  • Publication number: 20130073127
    Abstract: Methods and systems are provided for an engine. A condition of the engine may be diagnosed based on a combustion torque profile of the engine estimated using signals from a generator operationally connected to the engine and/or other signals associated with the engine. Different types of degradation may be distinguished based on discerning characteristics within the estimated combustion torque profile data. Thus, a degraded engine component may be identified in a manner that reduces service induced delay.
    Type: Application
    Filed: September 16, 2011
    Publication date: March 21, 2013
    Applicant: General Electric Company
    Inventors: Ajith Kumar, Somakumar Ramachandrapanicker, Paul Flynn, Arijit Banerjee, Rupam Mukherjee
  • Patent number: 8387449
    Abstract: A method and a device for performing tests on an internal combustion engine or a structure which is associated with the engine by measuring output parameter values on at least one output shaft (3LF, 3RF) which is connected to the engine, is distinguished by producing a representation of variations in said output parameter values during operation of the engine, and evaluating the representation for determining an operating parameter value for the engine or the structure. The invention also concerns a dynamometer testing rig.
    Type: Grant
    Filed: April 11, 2008
    Date of Patent: March 5, 2013
    Inventors: Christian Engström, Jonny Färnlund
  • Patent number: 8375775
    Abstract: The power of internal combustion engines is conventionally determined on special power-test stands on which all connections, in particular coolant connections, of the engine must be fitted. In particular, if a cold test of the internal combustion engine is carried out beforehand, it is necessary for said internal combustion engine to be dismounted from the cold-test stand and mounted on the power-test stand, which is time-consuming. The invention indirectly predetermines the power of the internal combustion engine during the cold test. In this way, the determination of the power can be carried out on the cold-test stand without the need for a power-test stand or for the internal combustion engine to be mounted thereon.
    Type: Grant
    Filed: December 28, 2010
    Date of Patent: February 19, 2013
    Assignee: Thyssenkrupp Krause GmbH
    Inventors: Thorsten Lilienkamp, Christian Rohde
  • Patent number: 8261604
    Abstract: An ECU executes a program including: a control to advance or retard the fuel injection timing by a prescribed value; determining whether the torque output variation of an engine exceeds a threshold torque output variation; and determining the fuel injection timing to be abnormal if the torque output variation of the engine is equal to or below the threshold torque output variation.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: September 11, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Atsushi Morikawa
  • Patent number: 8051704
    Abstract: A fuel injector diagnostic is disclosed. In one example, the diagnostic can determine if that amount of fuel injected or the timing of start of injection is degraded. Thus, the fuel injector diagnostic method can distinguish between different types of injector degradation.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: November 8, 2011
    Assignee: Ford Global Technologies, LLC
    Inventors: Yong-Wha Kim, Michiel J. Van Nieuwstadt, In Kwang Yoo
  • Patent number: 7992432
    Abstract: A method for operating an internal combustion engine for a motor vehicle, in which a first signal is determined, which characterizes a torque of the internal combustion engine. In order to provide a method for operating an internal combustion engine for a motor vehicle in which a torque of the internal combustion engine is determined even more precisely, in particular in the region of a zero crossing of the torque, a second signal, which characterizes a state variable of the internal combustion engine and/or the motor vehicle that differs from the torque is determined from the first signal, at least one third signal is recorded, which characterizes a measured value of the state variable, the second signal and the third signal are compared to one another, and the first signal is corrected on the basis of the comparison.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: August 9, 2011
    Assignee: Robert Bosch GmbH
    Inventors: Marcus Boumans, Markus Bossler, Maximilian Reger
  • Publication number: 20110174065
    Abstract: The power of internal combustion engines is conventionally determined on special power-test stands on which all connections, in particular coolant connections, of the engine must be fitted. In particular, if a cold test of the internal combustion engine is carried out beforehand, it is necessary for said internal combustion engine to be dismounted from the cold-test stand and mounted on the power-test stand, which is time-consuming. The invention indirectly predetermines the power of the internal combustion engine during the cold test. In this way, the determination of the power can be carried out on the cold-test stand without the need for a power-test stand or for the internal combustion engine to be mounted thereon.
    Type: Application
    Filed: December 28, 2010
    Publication date: July 21, 2011
    Applicant: ThyssenKrupp Krause GmbH
    Inventors: Thorsten Lilienkamp, Christian Rohde
  • Patent number: 7958779
    Abstract: An angular velocity/angular acceleration calculator of the crankshaft in an internal combustion engine includes a crank angle detection device, a crank angle correction device, and an angular velocity/angular acceleration calculation device. The crank angle detection device detects a crank angle in the internal combustion engine and a time at the crank angle. The crank angle correction device corrects the crank angle and the time thus detected to an equiangular crank angle and a time corresponding thereto. The angular velocity/angular acceleration calculation device calculates an angular velocity and an angular acceleration of the crankshaft by converting a function of the time with respect to the crank angle that are corrected by the crank angle correction device so as to be regarded as a periodic function, and utilizing the discrete Fourier transform of the converted function.
    Type: Grant
    Filed: May 1, 2009
    Date of Patent: June 14, 2011
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takafumi Nagano, Takashi Iwamoto, Tomoko Tanabe
  • Publication number: 20110130942
    Abstract: A device for measuring torque of an engine has a torque detecting section for detecting an output torque of engine cylinders, a rotation detecting section for detecting a rotation angle of a rotating section to which a piston of each cylinder is connected, a top mark detecting section for detecting the rotation angle of the piston of each cylinder, and a torque calculating section for estimating torque characteristics of each cylinder on the basis of the following: the signal of the output torque, the rotation angle of the rotating section, the rotation angle of the piston of each cylinder, the number of the cylinders of the engine, and the number of cycles of the engine. The torque calculating section estimates, as torque characteristics of each cylinder, either peak torque of each cylinder or the combustion angle at which the peak torque is attained.
    Type: Application
    Filed: July 30, 2009
    Publication date: June 2, 2011
    Applicant: FUCHINO CO., LTD.
    Inventor: Kozo Fuchino
  • Patent number: 7926329
    Abstract: The invention utilizes the firing order of the cylinders within the engine to identify the cylinder or cylinders that mainly contribute or, alternatively, contribute as little as possible to the production of certain harmonic frequencies in the engine's torque. In order to use the engine's torque for this purpose, the calculation of torque must take into account the non-linearities of the engine system. Thus the calculation of torque takes into account not only the properties of the engine but also the properties of the load and the shaft.
    Type: Grant
    Filed: November 21, 2006
    Date of Patent: April 19, 2011
    Assignee: WärtsiläFinland Oy
    Inventor: Fredrik Östman
  • Patent number: 7921707
    Abstract: An exhaust gas recirculation distribution variation sensing device has a torque sensing section that senses instantaneous torque caused with combustion of fuel injected from an injector for each cylinder, an injection quantity sensing section that senses an actual injection quantity of the injected fuel for each cylinder, and an exhaust gas recirculation distribution variation calculating section that calculates an exhaust gas recirculation distribution variation as a distribution variation of recirculated exhaust gas to respective cylinders based on a variation in the torque sensing value of the torque sensing section among the cylinders (i.e., a torque variation) and a variation in the injection quantity sensing value of the injection quantity sensing section among the cylinders (i.e., an injection quantity variation).
    Type: Grant
    Filed: October 27, 2008
    Date of Patent: April 12, 2011
    Assignee: Denso Corporation
    Inventors: Koji Ishizuka, Kenichiro Nakata
  • Patent number: 7801657
    Abstract: A control system for a vehicle having first and second wheels is provided that includes a differential apparatus adapted to distribute torque between the first and second wheels and a traction controller for controlling operation of the differential apparatus from vehicle launch up to a predetermined vehicle speed. The traction controller is configured to engage the differential apparatus in a first operating state according to at least one vehicle operating parameter indicative of a low traction operating condition and to further control engagement of the differential apparatus in a second vehicle operating state during the low traction operating condition according to a difference between an actual vehicle yaw rate and a predetermined target vehicle yaw rate. The control system also includes a stability controller for controlling engagement of the differential apparatus at or above the predetermined vehicle speed.
    Type: Grant
    Filed: February 2, 2007
    Date of Patent: September 21, 2010
    Assignee: Eaton Corporation
    Inventors: Damrongrit Piyabongkarn, Jae Y. Lew, John A. Grogg, Robert J. Kyle
  • Publication number: 20100212632
    Abstract: Operating an engine includes monitoring engine crank position, a corresponding engine torque, and an engine operating point. A state of an engine control parameter is adjusted in response to a difference between an identified location of peak torque and a preferred location of peak torque.
    Type: Application
    Filed: January 27, 2010
    Publication date: August 26, 2010
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Hossein Javaherian, Alan W. Brown, Michael P. Nolan
  • Patent number: 7775089
    Abstract: A crankshaft of an engine is connected to a carrier shaft of a planetary gear via a damper. The damper includes a torsion member generating elastic force for suppressing relative rotation, when the crankshaft and the carrier shaft are relatively rotated. A control unit estimates engine torque with using rotation angular acceleration of the crankshaft calculated from a detected value of an engine speed sensor, and corrects the estimated engine torque with a correction term of the elastic force of the damper calculated based on a damper torsional angle. Then, the control unit diagnoses an abnormality of the engine based on the estimated engine torque after correction.
    Type: Grant
    Filed: July 23, 2008
    Date of Patent: August 17, 2010
    Assignees: Toyota Jidosha Kabushiki Kaisha, Nippon Soken, Inc.
    Inventors: Takashi Suzuki, Takanobu Kawano
  • Patent number: 7770440
    Abstract: The course of torque transmitted though a driving shaft (3) between torque generating device (1) to be tested and a driving or loading mechanism (2) is determined during an identification phase in the completely constructed test bench with the use of a rotating driving or loading mechanism (2) at pseudo-stochastic rotational speeds. Determined are thereby parameters describing in a real and current manner the dynamic behavior of the driving shaft (3) whereby the parameters are used as an influence in further testing.
    Type: Grant
    Filed: June 13, 2006
    Date of Patent: August 10, 2010
    Assignee: AVL List GmbH
    Inventors: Peter Langthaler, Engelbert Grünbacher, Gerald Steinmaurer, Luigi del Re, Helmut Kokal, Michael Paulweber
  • Patent number: 7748261
    Abstract: An internal combustion engine torque estimation device that accurately estimates the torque of an internal combustion engine without being affected by engine speed changes. A reference signal, which is output at predetermined rotation angle intervals of a crankshaft for the engine, is acquired. In accordance with the reference signal, the amount of change in the rotation speed of the crankshaft is acquired as a rotational fluctuation. A filtering process is performed on the rotational fluctuation in synchronism with reference signal output timing to extract a frequency component synchronized with a combustion cycle of the engine. The torque of the engine is estimated in accordance with the extracted frequency component.
    Type: Grant
    Filed: January 15, 2008
    Date of Patent: July 6, 2010
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Yoshihiro Sakayanagi
  • Patent number: 7735359
    Abstract: A process quantity measurement method with which an engine output is accurately measured in a relatively simple manner. Torque of an engine is measured based on the amount of torsion of the output shaft of the engine, and an engine output is obtained based on the measured torque. On the other hand, an engine output is calculated based on input and output heat quantity, and a difference between the engine output based on the torque and the engine output based on the input and output heat quantity is obtained in advance. When the engine is operated, the previously obtained difference is added to the engine output that is based on the calculated input and output heat quantity to obtain the engine output.
    Type: Grant
    Filed: November 14, 2005
    Date of Patent: June 15, 2010
    Assignee: The Tokyo Electric Power Company, Incorporated
    Inventors: Shuichi Umezawa, Junichi Okada
  • Patent number: 7715993
    Abstract: A method for estimating pump torque of a computer-controlled fuel injection heat engine for a motor vehicle. The method determines the pumping torque in a for of a relative pumping torque representative for total pumping torque contribution of an intake and exhaust valve system, wherein the relative pumping torque is determined by a relation factoring in engine cubic capacity, a pressure difference, an exhaust pressure differential estimation due to the presence of the exhaust valves, and an intake pressure differential estimation due to the presence of the intake valves.
    Type: Grant
    Filed: October 20, 2005
    Date of Patent: May 11, 2010
    Assignee: Renault s.a.s.
    Inventors: Christophe Mounetou, Jerome Cruchet
  • Publication number: 20090282903
    Abstract: An angular velocity/angular acceleration calculator of the crankshaft in an internal combustion engine includes a crank angle detection device, a crank angle correction device, and an angular velocity/angular acceleration calculation device. The crank angle detection device detects a crank angle in the internal combustion engine and a time at the crank angle. The crank angle correction device corrects the crank angle and the time thus detected to an equiangular crank angle and a time corresponding thereto. The angular velocity/angular acceleration calculation device calculates an angular velocity and an angular acceleration of the crankshaft by converting a function of the time with respect to the crank angle that are corrected by the crank angle correction device so as to be regarded as a periodic function, and utilizing the discrete Fourier transform of the converted function.
    Type: Application
    Filed: May 1, 2009
    Publication date: November 19, 2009
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takafumi NAGANO, Takashi IWAMOTO, Tomoko TANABE
  • Patent number: 7610799
    Abstract: An engine measurement device includes a detector for measuring individual pieces of time series data containing at least a speed and output torque of an engine in a transient state while the engine is being run in combustion by control of an engine control unit, a torque operation unit for calculating the engine torque on the basis of the time series data of the engine speed and the output torque, and a model operation unit for modeling the engine torque as functions of the engine speed and a fuel injection time. This model is used to calculate both a fuel torque generated by the combustion run of the engine and a mechanical loss torque or the difference between the engine torque and the fuel torque.
    Type: Grant
    Filed: May 9, 2005
    Date of Patent: November 3, 2009
    Assignee: A&D Company, Ltd.
    Inventor: Mitsuharu Sugita
  • Patent number: 7600504
    Abstract: A method for operating an internal combustion engine, in which fuel is injected using an injection device into a combustion chamber of a cylinder of the internal combustion engine, a fuel quantity to be injected being ascertained as a function of individual properties of the injection device, and in which functional monitoring is performed, in which an actual torque is ascertained on the basis of performance quantities of the internal combustion engine and monitored for a deviation from a permissible torque. The individual properties of the injection device are taken into consideration when ascertaining the actual torque, where the functional monitoring is improved.
    Type: Grant
    Filed: June 23, 2005
    Date of Patent: October 13, 2009
    Assignee: Robert Bosch GmbH
    Inventors: Marco Gangi, Gerit Von Schwertfuehrer
  • Patent number: 7568382
    Abstract: An engine test system includes a base constructed and arranged to reside at a fixed location. The system further includes an engine support member constructed and arranged to concurrently support an engine and move relative to the base. The system further includes a linear transducer having (i) a first portion supported by the base, (ii) a second portion supported by the engine support member, and (iii) a circuit adjacent the first and second portions. The circuit is constructed and arranged to provide a linear transducer signal identifying an amount of linear compression and/or tension between the engine support member and the base along a predefined direction. When the linear transducer resides at a break in station, such an embodiment provides a simple, low cost mechanism which is capable of providing a horsepower measurement for every engine passing through the break in station.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: August 4, 2009
    Assignee: Lycoming Engines, a division of Avco Corporation
    Inventor: Anthony Stanley Pruszenski
  • Publication number: 20090107225
    Abstract: A cylinder characteristic variation sensing device has a small injection controlling section that performs small injections sequentially in respective cylinders, a torque increase amount sensing section that senses an increase amount of output torque caused in connection with the small injection for each cylinder, an injection quantity sensing section that senses an actual injection quantity of the small injection for each cylinder, and a cylinder characteristic variation calculating section that calculates a variation in a cylinder characteristic among the cylinders (i.e., a cylinder characteristic variation) based on a variation in the sensing value of the injection quantity sensing section among the cylinders (i.e., an injection quantity variation) and a variation in the sensing value of the torque increase amount sensing section among the cylinders (i.e. a torque increase amount variation).
    Type: Application
    Filed: October 27, 2008
    Publication date: April 30, 2009
    Applicant: DENSO CORPORATION
    Inventors: Koji Ishizuka, Kenichiro Nakata
  • Publication number: 20090107227
    Abstract: An exhaust gas recirculation distribution variation sensing device has a torque sensing section that senses instantaneous torque caused with combustion of fuel injected from an injector for each cylinder, an injection quantity sensing section that senses an actual injection quantity of the injected fuel for each cylinder and an exhaust gas recirculation distribution variation calculating section that calculates an exhaust gas recirculation distribution variation as a distribution variation of recirculated exhaust gas to respective cylinders based on a variation in the torque sensing value of the torque sensing section among the cylinders (i.e., a torque variation) and a variation in the injection quantity sensing value of the injection quantity sensing section among the cylinders (i.e., an injection quantity variation).
    Type: Application
    Filed: October 27, 2008
    Publication date: April 30, 2009
    Applicant: DENSO CORPORATION
    Inventors: Koji Ishizuka, Kenichiro Nakata
  • Publication number: 20090100920
    Abstract: An internal combustion engine torque estimation device that accurately estimates the torque of an internal combustion engine without being affected by engine speed changes. A reference signal, which is output at predetermined rotation angle intervals of a crankshaft for the engine, is acquired. In accordance with the reference signal, the amount of change in the rotation speed of the crankshaft is acquired as a rotational fluctuation. A filtering process is performed on the rotational fluctuation in synchronism with reference signal output timing to extract a frequency component synchronized with a combustion cycle of the engine. The torque of the engine is estimated in accordance with the extracted frequency component.
    Type: Application
    Filed: January 15, 2008
    Publication date: April 23, 2009
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventor: Yoshihiro Sakayanagi
  • Publication number: 20090100919
    Abstract: An engine measurement device includes a detector for measuring individual pieces of time series data containing at least a speed and output torque of an engine in a transient state while the engine is being run in combustion by control of an engine control unit, a torque operation unit for calculating the engine torque on the basis of the time series data of the engine speed and the output torque, and a model operation unit for modeling the engine torque as functions of the engine speed and a fuel injection time. This model is used to calculate both a fuel torque generated by the combustion run of the engine and a mechanical loss torque or the difference between the engine torque and the fuel torque.
    Type: Application
    Filed: May 9, 2005
    Publication date: April 23, 2009
    Applicant: A&D Company, Ltd.
    Inventor: Mitsuharu Sugita
  • Publication number: 20090043475
    Abstract: A control module comprising a cylinder torque determination module that determines an indicated torque for a cylinder in an engine based on a pressure in the cylinder, a cylinder torque balancing module that determines a derivative term for the cylinder based on rotation of a crankshaft, and a cylinder pressure error detection module that detects a pressure error for the cylinder based on the indicated torque and the derivative term. A method comprising determining an indicated torque for a cylinder in an engine based on a pressure in the cylinder, determining a derivative term for the cylinder based on rotation of a crankshaft, and detecting a pressure error for the cylinder based on the indicated torque and the derivative term.
    Type: Application
    Filed: October 14, 2008
    Publication date: February 12, 2009
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Kenneth J. Buslepp, Douglas R. Verner, Joseph R. Dulzo, David S. Mathews
  • Publication number: 20090025467
    Abstract: A crankshaft of an engine is connected to a carrier shaft of a planetary gear via a damper. The damper includes a torsion member generating elastic force for suppressing relative rotation, when the crankshaft and the carrier shaft are relatively rotated. A control unit estimates engine torque with using rotation angular acceleration of the crankshaft calculated from a detected value of an engine speed sensor, and corrects the estimated engine torque with a correction term of the elastic force of the damper calculated based on a damper torsional angle. Then, the control unit diagnoses an abnormality of the engine based on the estimated engine torque after correction.
    Type: Application
    Filed: July 23, 2008
    Publication date: January 29, 2009
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, NIPPON SOKEN, INC.
    Inventors: Takashi Suzuki, Takanobu Kawano
  • Patent number: 7481103
    Abstract: An engine control device controls an engine of a motor vehicle. The engine control device predefines an admissible engine torque on the basis of a torque envelope curve in dependence on an accelerator pedal position and an engine speed. The engine control device is connected to a diagnostic device. An intervention variable, that represents an engine torque and/or an engine speed and on the basis of which the engine can be actuated for test/diagnostic purposes, can be predefined for the engine control device by the diagnostic device. When at least one test criterion is fulfilled in the engine control device and/or the diagnostic device, the torque envelope curve of the engine control device can be widened or bypassed for test/diagnostic purposes in such a way that given an unactivated accelerator pedal for a defined engine torque at the request of the diagnostic device a larger engine torque is admissible.
    Type: Grant
    Filed: April 30, 2007
    Date of Patent: January 27, 2009
    Assignee: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
    Inventors: Thomas Gruenter, Marko Geertz