Engine Ignition Control For Transmission Change Patents (Class 477/101)
  • Publication number: 20020086771
    Abstract: Torque-down controlling conducted on an engine torque upon gear changing of an automatic transmission is implemented by converting a demand for a rate of torque-down against the engine torque into a down rate of combustion torque (an objective down rate). Further, from a difference between the present ignition timing of the engine and the MBT (Minimum Advance for Best Torque) ignition timing, the present down rate that is a rate of the present combustion torque against the combustion torque at the MBT ignition timing to subsequently multiplying the present down rate by the objective down rate so that a counter MBT down rate that is a down rate of the present combustion torque against the combustion torque at the MBT ignition timing is obtained. Thus, from the obtained counter MBT down rate, an amount of retard of ignition timing from the MBT ignition timing is calculated to implement the torque-down controlling.
    Type: Application
    Filed: November 30, 2001
    Publication date: July 4, 2002
    Applicant: NISSAN MOTOR CO., LTD.
    Inventor: Hiroshi Abe
  • Publication number: 20020039950
    Abstract: In a drive train (1) having an engine (18) which is controlled by an engine controller (2) and a transmission (26) which is controlled by a transmission controller (3), an intervention signal (ES) is transferred to the engine controller from the transmission controller via a data link (4). The intervention signal has values by means of which operating states (phases 0-IV) of the drive train (1) are specified during the driving mode of the motor vehicle and during the gear shift operations of the transmission (26).
    Type: Application
    Filed: May 24, 2001
    Publication date: April 4, 2002
    Inventors: Friedrich Graf, Gregor Probst, Hong Zhang
  • Patent number: 6256567
    Abstract: A speed-change pattern switching control system for an automatic transmission of a motor vehicle which can ensure enhanced comfort when driving the motor vehicle. The system decides the running state of the motor vehicle on the basis of driving/operation information (Te, Tm, T&agr;, &agr;f, &agr;s), performs a first filter processing on the running state information and the driving/operation information (Vs, &thgr;, &agr;f, Ws, Ps), stores the manipulated information (Jm) for the motor vehicle in the manual speed change mode, performs a second filter processing on the manipulation information (Jm) in the manual speed change mode, outputs of the running state and the driving/operation information, and corrects speed-change patterns for the automatic transmission on the basis of output signals of the first and second filter processing.
    Type: Grant
    Filed: August 9, 1999
    Date of Patent: July 3, 2001
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Masakazu Toukou
  • Patent number: 6238255
    Abstract: An improved shift mechanism for a marine propulsion transmission is provided. The shift mechanism includes a guide that defines a slot that receives a member of a linkage that connects an operator unit with a shift rod. Movement of the shift mechanism is converted into substantially linear motion and a shift position sensor is located at a substantially right angle to that movement. Information from the sensor is transmitted to a control unit and is employed to prevent abrupt starts. The shift position sensor is located on the side of an engine for ease of assembly and maintenance. Movement of the shift mechanism may also cause pivotal movement of the guide and this pivotal movement may be employed to reduce the engine speed and assist shifting.
    Type: Grant
    Filed: September 14, 1999
    Date of Patent: May 29, 2001
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventor: Hiroaki Takase
  • Patent number: 6050913
    Abstract: A system for adjusting the tension of a belt of a belt transmission provides a higher accuracy of the estimate of the engine torque, which is to be expected, and therefore a better proportioning of the tension is obtained. For this purpose, signals are made available from the engine control which controls the internal combustion engine. These signals make possible a precise estimation of the engine torque. In a first embodiment, this signal can, for example, be an estimated value for the engine torque to be expected. The estimated value is, for example, formed in the engine control. In a second embodiment, these signals can be the quantity of air mass inducted by the engine (that is, the signal derived therefrom) and the ignition angle of the engine. The tension of the belt can be reduced by the more accurate estimate of the engine torque so that an improved transmission efficiency results.
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: April 18, 2000
    Assignee: Robert Bosch GmbH
    Inventors: Lutz Reuschenbach, Karl-Heinz Senger, Joachim Luh, Johan Luyckx, Rine Pelders
  • Patent number: 6024669
    Abstract: In an automatic transmission, torque shocks are effectively reduced in specific downshifting conditions where relatively strong engine braking occurs as a result of downshifting. When a downshift command to the automatic transmission is detected when an accelerator pedal is not depressed, a valve opening command is issued to a throttle valve so that engine output will have increased by the time the downshifting action of the automatic transmission actually begins, ignition timing is delayed so that an increase in engine output resulting from the opening of the throttle valve by a throttle valve control means is offset for a period starting at the time the engine output actually increases as a result of the opening of the throttle valve by the throttle valve control means and ending at the time the downshifting action of the automatic transmission actually beings, and the ignition timing delaying is cancelled upon initiation of the downshifting action of the automatic transmission.
    Type: Grant
    Filed: November 9, 1998
    Date of Patent: February 15, 2000
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kunihiro Iwatsuki, Takashi Ohta, Tomokazu Inagawa
  • Patent number: 6015365
    Abstract: A shift-assist circuit for reducing the clutch wear of a transmission on a marine propulsion system during the shift process by anticipating the probable shifting forces and providing an ignition-kill signal before the shift forces can build to an unacceptable level.
    Type: Grant
    Filed: January 28, 1999
    Date of Patent: January 18, 2000
    Assignee: Outboard Marine Corporation
    Inventors: Richard P. Kolb, Robert P. Otka
  • Patent number: 5993354
    Abstract: A transfer case includes an input shaft driven by the output of an engine and transmission, a first output shaft connected to a first driveline, a second output shaft connected to a second driveline, and a power transfer mechanism for transferring drive torque from the input shaft to at least one of the output shafts. The power transfer mechanism includes a gear reduction unit driven by the input shaft and a range clutch operable for engaging the gear reduction unit to establish high-range and low-range drive modes between the input shaft and the first output shaft. A transfer case shift control system controls actuation of the range clutch during motive operation of the motor vehicle, thereby permitting on-the-move shifting of the transfer case between its high-range and low-range drive modes.
    Type: Grant
    Filed: January 25, 1999
    Date of Patent: November 30, 1999
    Assignee: New Venture Gear, Inc.
    Inventor: Joseph A. Winks
  • Patent number: 5931884
    Abstract: A method and apparatus for controlling a transmission for use with an automotive vehicle including an engine. The transmission coupled to the engine for transmitting a torque inputted thereto from the engine to produce an output torque at a continuously variable speed ratio. A target value for the speed ratio is calculated based on vehicle operating conditions. A rate at which the speed ratio changes to the calculated target value is calculated. An upper limit for the rate is calculated to satisfy such a condition that the output torque is substantially equal to or greater than zero. The rate of change of the speed ratio is limited to the upper limit when the calculated rate of change of the speed ratio is greater than the upper limit.
    Type: Grant
    Filed: March 6, 1997
    Date of Patent: August 3, 1999
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Tatsuo Ochiai
  • Patent number: 5921886
    Abstract: In an automatic transmission, torque shocks are effectively reduced in specific downshifting conditions where relatively strong engine braking occurs as a result of downshifting. When a downshift command to the automatic transmission is detected when an accelerator pedal is not depressed, a valve opening command is issued to a throttle valve so that engine output will have increased by the time the downshifting action of the automatic transmission actually begins, ignition timing is delayed so that an increase in engine output resulting from the opening of the throttle valve by a throttle valve control means is offset for a period starting at the time the engine output actually increases as a result of the opening of the throttle valve by the throttle valve control means and ending at the time the downshifting action of the automatic transmission actually beings, and the ignition timing delaying is cancelled upon initiation of the downshifting action of the automatic transmission.
    Type: Grant
    Filed: July 3, 1997
    Date of Patent: July 13, 1999
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Mitsuru Takada, Shigeo Kikori, Noboru Takagi, Hideo Tomomatsu, Kunihiro Iwatsuki, Takashi Ohta
  • Patent number: 5853306
    Abstract: Disclosed is a method of operation of a marine engine comprising sensing an operator demand for a gear-shift and, in response to the sensing of said operator demand, varying the engine torque profile to enable said gear-shift. Typically, the engine torque profile is required to be varied to overcome forces resistive to gear-shift.
    Type: Grant
    Filed: December 16, 1996
    Date of Patent: December 29, 1998
    Assignee: Orbital Engine Company (Australia) Pty Limited
    Inventors: David Richard Worth, Thomas Schnepple, Stephen Reinhard Malss
  • Patent number: 5827150
    Abstract: A marine propulsion engine control system wherein the control includes an arrangement for slowing the speed of the engine by disabling certain cylinders in the event of an abnormal engine running condition. Also, an arrangement is provided for slowing the speed of the engine if a change speed transmission for driving the propulsion shaft by the engine offers more than a predetermined resistance to shifting. The controls are interrelated so that the engine protection control predominates. That is, if the engine is in protection control mode and the operator attempts a shift and more than a predetermined resistance is felt, the shift control routine will not be initiated to effect any additional engine speed reduction. In addition, when the engine speed is reduced, fuel is continued to be supplied by the fuel injectors to avoid backfiring, stalling, and uneven running. When rapid deceleration is called for the spark advance is rapidly retarded but fuel injection amount is gradually decreased.
    Type: Grant
    Filed: July 22, 1996
    Date of Patent: October 27, 1998
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Kyoji Mukumoto
  • Patent number: 5816976
    Abstract: Disclosed is a driving torque control device for a vehicle comprising the elements. The device can effectively suppress fluctuation of engine torque. (1) Means for calculating a torque control timing to determine and output at least two control timings of an engine torque generated by an engine during speed shifting. (2) Means for calculating and outputting an engine torque control quantity in response to the output from said torque control timing calculating means to calculate and output the engine torque control quantity (3) Means for controlling the engine torque during speed shifting in response to the outputs from said engine torque control quantity calculating means.The engine torque is reduced by a certain quantity at a first timing of said engine torque control timings, followed by increasing the engine torque at the second engine torque control timing, and then returning the engine torque to the engine torque of the time immediately before the first engine torque control timing.
    Type: Grant
    Filed: December 7, 1995
    Date of Patent: October 6, 1998
    Assignee: Hitachi, Ltd.
    Inventors: Hiroshi Kuroiwa, Seiji Suda, Masami Shida, Masahide Sakamoto
  • Patent number: 5788602
    Abstract: Engine-control device, in which an internal combustion engine coupled to a transmission group is controlled by a central electronic unit which receives at an input a plurality of information parameters measured in the engine and calculates control signals for operating groups of the engine itself. The device comprises an external processing unit communicating with a control circuit of the transmission group and with the central control unit. The processing unit is capable of being activated by commands originating from the control circuit to modify the control signals, regulating alternately the torque generated by the engine and the speed of rotation of the engine itself.
    Type: Grant
    Filed: September 30, 1996
    Date of Patent: August 4, 1998
    Assignee: Magneti Marelli S.p.A.
    Inventors: Michele Pennese, Savino Lupo
  • Patent number: 5700168
    Abstract: A shift interrupt apparatus for a marine drive of the type which has an ignition system and a transmission that is adapted to be selectively shifted among forward, neutral and reverse operating positions. A control member is provided for selectively positioning the transmission of the drive into forward, neutral and reverse operating positions. The apparatus has a light circuit associated with a mechanical assembly adapted to detect excessive shifting force, which generates an electrical signal for interrupting the ignition to facilitate easier shifting.
    Type: Grant
    Filed: August 19, 1996
    Date of Patent: December 23, 1997
    Assignee: Outboard Marine Corporation
    Inventors: Martin J. Mondek, James C. Kantola
  • Patent number: 5692992
    Abstract: A shift assist apparatus for a marine drive includes a tube having a pair of biased springs, between which a sleeve at the end of a transmission cable is movably retained. A remote control cable is fixedly attached to the tube. High transmission cable shift forces associated with resistance to shifting cause the sleeve to move against the bias of one of the springs. A sensor detects this movement and sends an electrical signal to interrupt the engine ignition circuit, thereby preventing the firing of one or more cylinders of the engine. The interruption of the engine ignition reduces the torque on the shift mechanism, in turn reducing the shift forces in the transmission cable and enabling the operator to shift the transmission. When the shift operation is completed, the engine resumes normal firing.
    Type: Grant
    Filed: February 14, 1996
    Date of Patent: December 2, 1997
    Assignee: Volva Penta of the Americas, Inc.
    Inventors: Lennart Arvidsson, Jan Grundberg
  • Patent number: 5668727
    Abstract: In a powertrain including an internal combustion engine coupled to a transmission, engine ignition timing is controlled to minimize the impact of severe mechanical load disturbances, such as resulting from transmission shifts into or out of park or neutral positions, wherein the ignition timing is gradually varied to match the characteristic of the load disturbance being compensated, and variation in ignition timing is delayed in accord with transmission responsiveness, such as indicated by transmission temperature, until the disturbance is actually impacting powertrain mechanical load. Control stability is improved by temporarily suspending potentially duplicate control operations until the mechanical load disturbance has been compensated.
    Type: Grant
    Filed: April 28, 1995
    Date of Patent: September 16, 1997
    Assignee: General Motors Corporations
    Inventors: Brian James Pellerito, Lucius B. Allen
  • Patent number: 5665025
    Abstract: An engine control system wherein the engine throttle valve is maintained in a substantial partially opened position at idle and the desired idle speed is maintained by controlling the spark advance. A lost motion connection connects the operator engine speed control with the throttle control so that when the operator speed control reaches a pick up position, the lost motion will be taken up and normal throttle opening will occur. This improves transient running. The system includes arrangements for detecting wear or other changes in the operative condition and compensating for it.
    Type: Grant
    Filed: December 18, 1995
    Date of Patent: September 9, 1997
    Assignee: Sanshin Kogyo Kabushuki Kaisha
    Inventor: Masahiko Katoh
  • Patent number: 5403246
    Abstract: A control device for an internal combustion engine comprises a shift lever position detector for detecting a shift lever position of an engine for an outboard motor; and an ignition timing controller for retarding an ignition timing of the engine for the outboard motor based on the shift lever position when a clutch is disengaged.
    Type: Grant
    Filed: December 1, 1993
    Date of Patent: April 4, 1995
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Hideki Umemoto