Sensor Output Compared To Threshold Patents (Class 701/31.1)
  • Patent number: 8494708
    Abstract: A controller for determining whether a previously-detected vehicle malfunction still exists. If the malfunction is no longer detected in the sensor signals, a vehicle control system operates in a first operational state or normal operational state with respect to the previously-malfunctioning sensor (e.g., signals from the sensor are used to control the vehicle). If the malfunction continues to be detected, the vehicle control system operates in a second operational state or malfunction state with respect to the malfunctioning sensor in which the signals from the sensor are not used to control the vehicle.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: July 23, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Henrik Bechtler, Ravi Bhadange, Nachiket Patil, Takeshi Tokonaga, Stefan Mallmann, Michael Schwab, Dietmar Stapel, Willy Klier, Joerg Eesmann
  • Patent number: 8457835
    Abstract: A method for use in evaluating an operation of a combustion machine. A plurality of current average intensities is calculated by a computing device based on a series of intensity readings from a flame sensor. Each current average intensity corresponds to a current time interval. The computing device selects a plurality of past average intensities, each of which corresponds to a past time interval equal in duration to the current time interval corresponding to a current average intensity. The computing device calculates a plurality of decay rates indicating a change in intensity readings over a current time interval based on the current average intensities and the past average intensities. The computing device estimates a predicted flame sensor malfunction time based on the plurality of decay rates.
    Type: Grant
    Filed: April 8, 2011
    Date of Patent: June 4, 2013
    Assignee: General Electric Company
    Inventor: Gaurav Nigam
  • Patent number: 8447456
    Abstract: A method of determining an engine intake air leak may include measuring an air flow rate into an internal combustion engine, comparing the measured air flow rate to a first predetermined air flow limit, calculating an estimated air flow rate into the engine when the measured air flow rate is less than the first predetermined air flow limit, comparing the estimated air flow rate to second and third predetermined air flow limits, and indicating an air leak when the estimated air flow rate is greater than the second predetermined air flow limit and less than the third predetermined air flow limit.
    Type: Grant
    Filed: January 17, 2008
    Date of Patent: May 21, 2013
    Inventors: Wenbo Wang, Kurt D. McLain
  • Patent number: 8438899
    Abstract: A system for improving operation of an engine having a particulate matter sensor is presented. The system may be used to improve engine operation during cold starts especially under conditions where water vapor or entrained water droplets are present in vehicle exhaust gases. In one embodiment, degradation of a particulate matter sensor is indicated after a temperature of a substrate of the particulate matter sensor exceeds a threshold temperature and an output of the particulate matter sensor is below a threshold value.
    Type: Grant
    Filed: December 21, 2009
    Date of Patent: May 14, 2013
    Assignee: Ford Global Technologies, LLC
    Inventors: Garry Anthony Zawacki, Robert F. Novak, Roberto Teran, Jr., Dave Charles Weber, Michiel J. Van Nieuwstadt, Michael Hopka, William Charles Ruona
  • Publication number: 20130103252
    Abstract: A method for recognizing a deviation of a yaw-rate signal of a sensor of a vehicle is proposed which includes a step of receiving a piece of information regarding a linear acceleration of the vehicle, and a step of receiving the yaw-rate signal, which represents a yaw rate of the vehicle. A step of analyzing the yaw-rate signal takes place when the linear acceleration is smaller than a first threshold value, in order to recognize the deviation of the yaw-rate signal.
    Type: Application
    Filed: January 28, 2011
    Publication date: April 25, 2013
    Inventors: Stephan Bentele-Calvoer, Norman Schuetze
  • Patent number: 8423233
    Abstract: A vehicle identifying unit obtains an identification number of a vehicle from the vehicle. A first evaluation unit evaluates a degradation state of a power storage device based on the use history of the power storage device obtained from the vehicle, using data analyzed beforehand concerning the relation between the use history and the degradation state of the power storage device. A second evaluation unit evaluates a degradation state of the power storage device using data collected when the power storage device of the vehicle is charged from a power station or when power is fed from the vehicle to the power station. A degradation determining unit determines the degradation state of the power storage device based on the degradation states evaluated by the first and second evaluation units.
    Type: Grant
    Filed: July 8, 2009
    Date of Patent: April 16, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Masatoshi Uchida
  • Patent number: 8423228
    Abstract: An apparatus for detecting a decrease in air pressure of a tire attached to a vehicle includes a rotation speed detection means for periodically detecting rotation speeds of tires of respective wheels of the vehicle; a rotation wheel speed ratio calculation means for calculating a rotation wheel speed ratio between front wheels and rear wheels of the vehicle; a wheel torque calculation means for calculating a wheel torque of the vehicle; an initialization means for obtaining a relation at a normal internal pressure between the wheel torque and the rotation wheel speed ratio; a comparison means for comparing the rotation wheel speed ratio with the rotation wheel speed ratio at a normal internal pressure obtained from the wheel torque and the relation; and a determination means for correcting the comparison result by a front-to-rear direction acceleration and determining whether there is a tire having a decreased air pressure or not.
    Type: Grant
    Filed: December 13, 2010
    Date of Patent: April 16, 2013
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventor: Yuji Oshiro
  • Patent number: 8401752
    Abstract: A fail-to-neutral diagnostic technique for a transmission that includes a variator may include monitoring a state of a pressure differential valve fluidly coupled to a high side pressure applied to at least one actuator coupled to at least one corresponding roller of the variator and also fluidly coupled to a low side pressure applied to the at least one actuator, determining from the state of the pressure differential valve a variator torque sign corresponding to whether torque transferred by the at least one roller is positive or negative, determining an expected variator torque sign based on current operating conditions of the transmission, and commanding the transmission to a true neutral condition if the determined variator torque sign is different from the expected variator torque sign.
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: March 19, 2013
    Assignee: Allison Transmission, Inc.
    Inventors: Charles F. Long, Darren J. Weber, John William Edward Fuller
  • Patent number: 8401730
    Abstract: A controller for indicating whether a previously-detected, acceleration-sensor malfunction no longer exists. The controller includes an electronic memory and an electronic processing unit connected to the electronic memory. The electronic processing module includes a malfunction monitoring module, a failure handling module, and a signal checking module. The signal checking module performs a signal check after the malfunction monitoring module generates the fault signal. The signal check includes executing a signal check function with a lateral acceleration signal. Also disclosed is a vehicle including the controller, and a method executed by the controller.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: March 19, 2013
    Assignee: Robert Bosch LLC
    Inventors: Henrik Bechtler, Ravi Bhadange, Nachiket Patil, Takeshi Tokonaga, Stefan Mallmann, Michael Schwab, Dietmar Stapel, Willy Klier, Joerg Eesmann
  • Patent number: 8386122
    Abstract: Embodiments of techniques for autonomous testing of head-of-train (HOT) and/or end-of-train (EOT) devices are disclosed. In one embodiment, a method for autonomous testing of HOT and EOT devices may include the steps of: causing a first device to enter a self-test mode, said first device being either an HOT device or an EOT device mounted to a first railway vehicle; transmitting, from said first device, a test signal to elicit one or more response signals from at least one second device within a communication range of said first device, each of said at least one second device being either an HOT device or an EOT device different from said first device; detecting, by said first device, said one or more response signals, if any; and determining a first operating condition concerning said first device based at least in part on the detection of said one or more response signals.
    Type: Grant
    Filed: May 11, 2010
    Date of Patent: February 26, 2013
    Assignee: Norfolk Southern Corporation
    Inventor: Jonathan A. Collins
  • Patent number: 8370056
    Abstract: A collision warning apparatus includes sensors, output devices, memory locations, a GPS device, and a processor. The processor may receive information from the sensors. The processor may also process the information to identify a detected object as a present potential collision object. The processor may compare present GPS coordinates of the vehicle with stored vehicle GPS coordinates saved in memory, to determine whether or not the present GPS coordinates correspond to stored vehicle GPS coordinates associated with a previously identified potential collision object. If the present GPS coordinates correspond to stored vehicle GPS coordinates associated with a previously identified potential collision object, the processor is operable to suppress a potential collision warning.
    Type: Grant
    Filed: August 12, 2009
    Date of Patent: February 5, 2013
    Assignee: Ford Global Technologies, LLC
    Inventors: Roger Arnold Trombley, Thomas Edward Pilutti
  • Patent number: 8370016
    Abstract: An OBDII device and method and system which includes an inexpensive, user friendly way to determine a vehicle's readiness status for emissions testing. An audible or visual indication that may or may not be wirelessly connected to the tool is provided to alert the repair shop technician or driver that the vehicle has completed its drive cycle and may now be tested for compliance with state and federal emissions laws. The device also includes the ability to prevent the tool from discharging a power source of the vehicle when the device is coupled to the vehicle.
    Type: Grant
    Filed: September 18, 2006
    Date of Patent: February 5, 2013
    Assignee: SPX Corporation
    Inventors: Thomas Webster, Daniel Sampson, Richard Mattox, Matthew Koran, Robert Roberts, Hamid Namaky
  • Publication number: 20120330530
    Abstract: A method for checking a function of an actuator or a sensor of a system, having the following steps: controlling the actuator within a time window if at least one state variable of the system is in a predefined operating range; detecting a system response, with the aid of the sensor, within the time window as a response to controlling the actuator; determining a malfunction of the actuator or of the sensor if the system response differs from a setpoint system response that is expected due to controlling the actuator. A further actuator of the system is controlled during the time window in such a way that the at least one state variable of the system remains in the predefined operating range during the time window. Moreover, a corresponding method for calibrating a sensor or an actuator of a system is described.
    Type: Application
    Filed: December 6, 2010
    Publication date: December 27, 2012
    Inventor: Andras Montvay
  • Patent number: 8340853
    Abstract: A motor vehicle has wheels on which it travels, a powertrain delivering propulsion torque to at least some of the wheels propel the vehicle, and a service brake system having service brakes. When the service brakes are applied by a service brake actuator, braking torque is applied to at least some wheels. A first device provides data representing a velocity that correlates with velocity of the vehicle, and a second device associated with the actuator provides data that distinguishes between application and non-application of the service brakes by the actuator. A processor monitors data from the first and second devices and processes the monitored data to provide a data output when the first device has disclosed velocity change indicative of the service brakes having been applied without the second device having disclosed that the service brakes have been applied.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: December 25, 2012
    Assignee: International Engine Intellectual Property Company, LLC
    Inventors: Rogelio Rodriguez, Ly V. Tran
  • Patent number: 8335607
    Abstract: In one embodiment a control system for linking a plurality of electrically driven road vehicles together is disclosed, the control system having: a coupling input and a coupling output disposed on each of the plurality of vehicles, each coupling input of each vehicle being configured to releasably engage each coupling output of another vehicle to provide a mechanical and electrical coupling of the plurality of vehicles together; and a control system located on each of the plurality of vehicles, the control system communicating with the coupling input and the coupling output to detect when the coupling input or the coupling output is engaged with another vehicle via a respective coupling input or coupling output, the control system being further configured to operate in a lead vehicle mode or a trailing vehicle mode when the control system detects that the coupling input or the coupling output is engaged with another vehicle, wherein the lead vehicle mode causes the control system of the lead vehicle to contro
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: December 18, 2012
    Inventors: Ronald A Gatten, Bradley T. Sykes, Jong Noah Fong
  • Patent number: 8320932
    Abstract: A system (100) and method (300) of using a context vector and database (202) for location applications can include a transceiver (104), a plurality of environmental sensors (114, 116, 118, 120, 121) including at least two location technology devices (110, 112), and a processor (102) coupled to the transceiver and the plurality of environmental sensors. The processor can be programmed to sense (302) an environmental condition for a given location, define (310) a context vector for the given location, detect (312) a context transition corresponding to a change in the environmental condition, and modify (314) an operation of the at least two location technology devices based on the context transition detected. The processor can be further programmed to form (320) a new context vector based on the context transition and attempt to match the new context vector with a pre-stored context vector.
    Type: Grant
    Filed: April 11, 2006
    Date of Patent: November 27, 2012
    Assignee: Motorola Solutions, Inc.
    Inventors: Ellis A. Pinder, Charles B. Swope
  • Patent number: 8321080
    Abstract: In engine temperature display device for a watercraft, an engine temperature data value is calculated based on a detection signal of a temperature of an engine of an outboard motor. The engine temperature data value is sent to an engine state display device installed in a watercraft by a LAN. A control portion of the engine state display device computes the engine temperature data value based on a plurality of threshold temperatures of a standard engine model stored in a nonvolatile memory, and converts the data value into a display data for indicating a temperature level among a plurality of temperature levels. The display data is displayed on a display device on the watercraft. An engine temperature data value calculating and sending device computes using a plurality of threshold values on an engine block wall temperature specific to an engine, and sends the appropriately converted engine temperature data value.
    Type: Grant
    Filed: April 24, 2008
    Date of Patent: November 27, 2012
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Takaaki Bamba
  • Patent number: 8280576
    Abstract: In an automotive drive, at least one dynamic characteristic of a bearing by which the automotive drive is supported on a beam is selectively influenced during operation of the automotive drive (active bearing). It is provided that a change in an instantaneous operating variable of the automotive drive is determined from a change in a state variable of the active bearing that influences its dynamic characteristic.
    Type: Grant
    Filed: February 12, 2008
    Date of Patent: October 2, 2012
    Assignee: Robert Bosch GmbH
    Inventors: Michael Baeuerle, Udo Sieber, Klaus Ries-Mueller
  • Patent number: 8230716
    Abstract: A diagnostic method and system is described for diagnosing an operating condition of a conductive particulate matter sensor. The sensor has a substrate and two electrodes on the substrate adapted to collect particulate matter between the electrodes, thereby establishing an electrically conductive path through collected particulate matter between the electrodes that can be detected by measuring electrical resistance between the electrodes, Relect. The diagnosis is performed by detecting whether water vapor condensate may be present between the electrodes and if it is, then measuring resistance between the electrodes while subjecting the sensor to conditions sufficient to evaporate any water vapor condensate and diagnosing a validation that the sensor is in proper operating condition if resistance increases in a manner consistent with evaporation of condensate.
    Type: Grant
    Filed: November 9, 2009
    Date of Patent: July 31, 2012
    Assignee: Delphi Technologies, Inc.
    Inventors: Charles Scott Nelson, Lary R. Hocken
  • Patent number: 8229620
    Abstract: A method for model-based diagnosis of a mechatronic system. A control unit within the mechatronic system performs error detection and an arithmetic unit outside of the mechatronic system performs error identification.
    Type: Grant
    Filed: May 15, 2006
    Date of Patent: July 24, 2012
    Assignee: Robert Bosch GmbH
    Inventors: Walter Lehle, Jochen Assfalg, Martin Fritz, Frank Allgoewer
  • Publication number: 20120150383
    Abstract: A method and system for monitoring and predicting failure in pumps on operating vehicles is disclosed. The method may comprise measuring a plurality of a pressure drops across an orifice in a case drain line of a vehicle operating in drive gear, determining an actual case drain flow rate for each measured pressure drop, selecting a plurality of the actual case drain flow rates, estimating for each selected actual case drain flow rate an estimated flow rate for the case drain line and displaying the difference between the actual case drain flow rate and the estimated flow rate for each selected actual case drain flow rate.
    Type: Application
    Filed: December 14, 2010
    Publication date: June 14, 2012
    Applicant: CATERPILLAR, INC.
    Inventor: Richard D. Douglas
  • Publication number: 20120150384
    Abstract: The present invention provides a technique for controlling creep torque to prevent a vehicle from rolling backward on an upward slope. In particular, a gradient of a road is calculated in real time from a detection value of a sensor and vehicle acceleration. A maximum creep torque for preventing roll-back caused by gravity according to the gradient is calculated using the gradient and vehicle information. A first creep torque reference is calculated based on the maximum creep torque and the vehicle speed. A second creep torque reference is calculated based on the maximum creep torque and the vehicle acceleration. A torque command value according to an operation state of a brake is calculated based on the first creep torque reference value and the second creep torque reference value and the gradient. In response, a torque output of a driving motor is controlled according to the calculated torque command value.
    Type: Application
    Filed: June 21, 2011
    Publication date: June 14, 2012
    Applicant: HYUNDAI MOTOR COMPANY
    Inventors: Jae Won Jung, Soon Woo Kwon, Kyu Il Lee, Sung Jin Chung, Sung Gone Yoon
  • Patent number: 8185291
    Abstract: A stall prediction apparatus of an axial compressor provided with: a rotor provided with a plurality of rotor blades; and a cylindrical casing facing the rotor blades and provided so as to cover the outer circumference of the rotor, comprising: pressure sensors provided in equal numbers at a plurality of locations in a circumferential direction of an inner wall surface of the casing, an index calculator for calculating an index (stall risk index) for evaluating the stall risk based on time-series data detected by each of the pressure sensors, and a signal processor for predicting the stall occurrence based on the stall risk indexes obtained corresponding to said each of the pressure sensors. In accordance with the present invention, it is possible to obtain a stall risk index which is highly accurate (supersensitive) and stable necessary for the active stall control, and to realize an engine control system with high reliability.
    Type: Grant
    Filed: May 18, 2007
    Date of Patent: May 22, 2012
    Assignees: IHI Corporation, IHI Scube Co., Ltd.
    Inventors: Tomofumi Nakakita, Takashi Tomiyama, Fumitaka Takemura
  • Patent number: 8185266
    Abstract: It is determined whether a vehicle enters a halting state or a slow moving state. It is detected that an accelerator opening degree of the vehicle is zero during a deceleration duration up to the time to enter the halting state or the slow moving state. Further, an accelerator zero duration is calculated which is a duration for which the vehicle is in the halting state or the slow moving state while the accelerator opening degree is zero. Furthermore, an accelerator zero travel distance is calculated which the vehicle runs during the calculated accelerator zero duration. Based on the accelerator zero travel distance, it is determined whether the fuel saving driving operation is performed in traveling during the accelerator zero travel duration. Even in the state where the travel speed of the vehicle changes more than needs during inertia travel, the fuel saving driving operation is diagnosed appropriately.
    Type: Grant
    Filed: February 16, 2010
    Date of Patent: May 22, 2012
    Assignee: DENSO CORPORATION
    Inventor: Yasuyuki Itoh
  • Patent number: 8180520
    Abstract: The electronic safing system is provided with a safing sensor, a comparator, and a microcomputer. The microcomputer has a programmable analog I/O port which is connected to a built-in AD-DA converter. The programmable analog I/O port can be switched to an analog input port and an analog output port according to an internal register. The programmable analog I/O port is connected to an input terminal of the comparator. When diagnosing the comparing circuit, the microcomputer switches the programmable analog I/O port to the analog output port and outputs a predetermined voltage for diagnosis. Then, the microcomputer diagnoses the comparing circuit by monitoring the output of the comparing circuit.
    Type: Grant
    Filed: November 3, 2009
    Date of Patent: May 15, 2012
    Assignee: Denso Corporation
    Inventor: Shinichi Kiribayashi