Honda Giken Kogyo Kabushiki Kaisha

Honda Motor Co., Ltd.

Atsushi Matsubara

Shinichi Kitajima

Teruo Wakashiro

Atsushi Izumiura

Shigetaka Kuroda

Yasuo Nakamoto

Kan Nakaune

Kazutomo Sawamura

Hideyuki Oki

Hideyuki Takahashi

Takashi Kiyomiya

Toshinari Shinohara

Asao Ukai

Takashi Iwamoto

Hironao Fukuchi

Yukio Miyashita

Katsuhiro Kumagai

Shigeo Hidai

Fumihiko Konno

Hiroshi Mifune

Hiroyuki Makino

Morio Kayano

Kenji Nakano

Youichi Iwata

Naoya Miyamoto

Tomoharu Kamo

Yutaka Tamagawa

Takahiro Eguchi

Toshiyuki Sato

Kazunori Watanabe

Masaaki Yamaguchi

Kunio Noguchi

Yoshihiro Katagiri

Atsushi Shibutani

Futoshi Nishioka

Keisuke Uchida

Kazuya Ozono

Tomoyuki Takano

A failure detection device for a vehicle having a deceleration deactivatable engine, by which failure detection, performed primarily by monitoring the oil pressure of operation oil, is ensured. The failure detection device is provided for a vehicle having a deceleration deactivatable engine in which it is possible to deactivate at least one cylinder by closing both of intake and exhaust valves thereof by applying the oil pressure of operation oil to a passage for deactivation execution via an actuator, and also it is possible to cancel the closed state of both of the intake and exhaust valves by applying the oil pressure of the operation oil to a passage for deactivation cancellation. The failure detection device includes an oil pressure condition judgement section (steps Sand S) which determines whether the oil pressure of the operation oil measured by a POIL sensor satisfies threshold conditions, and an abnormality judgement section (steps Sand S) which determines that abnormality exists when it is determined, by the oil pressure condition judgement section, that the oil pressure of the operation oil does not satisfy the threshold conditions.

Trouble detector of vehicle having deceleration idling-cylinder engine

A control device for a hybrid vehicle having an engine and a motor as driving sources for the vehicle, and when decelerating, the control device stops the fuel supply to the engine and generates energy by regenerative braking. The engine is a cylinder pause-type engine which is capable of switching between the all-cylinder driving state in which all of cylinders are operating, and a cylinder paused driving state in which all of the cylinders are paused, and the control device of the hybrid vehicle comprises a cylinder pause state determination device for determining whether the engine is in the all cylinder driving state or in a cylinder paused driving state and a regeneration amount supplementing device for supplementing the regeneration energy by the motor by use of the increment of the regeneration energy obtained during the cylinder pausing operation than that obtained during all cylinder driving state.

Controller of hybrid vehicle

A control device for a hybrid vehicle which enables an appropriate electrical control based on the usable electrical energy stored in the battery device. In this control device, in step Sin which it is determined whether the value of an energy storage zone B flag F_ ESZONEB is '1'. When the result of the determination is 'Yes', the operation proceeds to step SIn step in step Sthe WOT assist amount lowest coefficient KQBWOASTL, which increases as the use-permission zone PECAPFIB of the state of charge SOC increases, is retrieved from a table. In step in step Sthe WOT assist amount coefficient,KQBWOAST, which increases from the lowest table value KQBWOASTL to a predetermined highest value as the state of charge SOC increases, is retrieved from a table, and a value obtained by multiplying the WOT assist command WOTAST and the WOT assist amount coefficient KQBWOAST retrieved from the table is newly set as the WOT assist command WOTAST.

Control device for hybrid vehicle

A motor control device for a vehicle having a deceleration deactivatable engine which includes at least one deactivatable cylinder which is deactivated during a deceleration traveling of the vehicle, and which is started by a motor when the operation thereof transitions from a deceleration deactivation operation to a normal operation. The motor control device comprises a cylinder deactivation state determining section (S) for determining whether or not the engine is in a cylinder deactivation state, a cylinder deactivation executing section, a cylinder deactivation operation detecting section (S) for detecting whether or not the cylinder deactivation executing section is activated, and a starting torque setting section (S-S) for setting staring torque for starting the engine by the motor. When it is determined, by the cylinder deactivation state determining section, that the engine is in a cylinder deactivation state, and it is determined, by the cylinder deactivation operation detecting section, that the engine is to return to the fuel supply operation, the starting torque setting section sets a smaller staring torque than in the case of a normal operation. Accordingly, the output of the motor is optimally set when the operation transitions from the cylinder deactivation operation to the normal operation; thus, a smooth drivability and an improved fuel consumption efficiency can be obtained.

Motor controller of deceleration idling-cylinder engine vehicle

A control device for a hybrid vehicle which enables an improvement in fuel consumption by means of a cylinder deactivation operation while maintaining brake performance. The hybrid vehicle has an engine (E) and a motor (M) for outputting power for driving the vehicle, wherein a regenerative brake is used during deceleration traveling of the vehicle in accordance with a deceleration state thereof, and the engine (E) includes at least one deactivatable cylinder which is deactivatable during deceleration traveling of the vehicle. The control device comprises: a deactivation determining section for determining whether the deactivatable cylinder is allowed to be deactivated in accordance with a traveling state of the vehicle; a deactivation cancellation determining section for canceling cylinder deactivation during deactivation operation; an intake pressure sensor (S); a master vac negative pressure sensor (S); and a control valve () for opening/closing a secondary air passage () for providing auxiliary air into the intake passage (), wherein the control valve () is closed when the intake pressure is a negative value lower than a predetermined threshold during deceleration traveling of the vehicle.

A control apparatus for a hybrid vehicle for generating an appropriate amount of regeneration energy during deceleration. A control apparatus for a hybrid vehicle including an engine and electric motor for driving the hybrid vehicle wherein the engine comprises cylinders capable of deactivated operations and the motor executes regenerative braking when the vehicle is decelerating. The control apparatus of the present invention includes a cylinder deactivation determination device for determining whether or not the vehicle speed is appropriate for executing the cylinder deactivated operation, a regeneration amount calculating device for detecting whether the vehicle state is appropriate for regeneration and calculates the amount of regeneration; and further includes a compensation amount calculating device that compensates the amount of regeneration based on an all cylinder deactivated operation and the engine rotation speed.

Control apparatus for hybrid vehicle

A control apparatus for a hybrid vehicle which includes an all cylinder deactivated operation execution flag F_ALCS for executing the all cylinders deactivated operation, when it is determined that the all cylinders deactivated operation is appropriate by the all cylinders deactivation standby flag F_ALCSSTB for determining the appropriateness of the all cylinders deactivated operation and the all cylinders deactivation release conditions realization flag F_F_ALCSSTP for determining the appropriateness of releasing the all cylinders deactivated operation, based on the all cylinders deactivation solenoid flag F_ALCSSOL for operating a spool valve, for determining an appropriateness of the operation of the solenoid valve, the all cylinder deactivation standby flag F_ALCSSTB, the all cylinder deactivation conditions realization flag F_ALCSSTP, the all cylinder deactivation solenoid flag F_ALCSSOL.

Control device for hybrid vehicles

In a control apparatus for a hybrid vehicle having an engine and a motor as a driving source, the control apparatus stops fuel supply to the engine by a fuel supply stop device during deceleration, and performs regenerative braking by the motor depending on the deceleration state, wherein the engine is a type of engine capable of executing cylinders deactivated operation for at least one cylinder, and the control apparatus comprises the cylinders deactivated operation execution flag F_ALCS for determining whether it is appropriate for cylinders to enters into the deactivated operation based on the traveling conditions of a vehicle and a variable valve timing mechanism for deactivating the operation of the cylinders of the engine when the cylinders deactivated operation is determined. Furthermore, when the fuel supply to the engine is stopped during deceleration, the cylinder deactivated operation is performed based on the all cylinders deactivated operation execution flag F_ALCS and the variable valve timing system.

A torque variation control device for a vehicle which has a motor providing rotational torque to a drive shaft of a vehicle, a motor control means controlling the motor based on drive torque, and a rotational velocity detection means detecting a rotational velocity of the drive shaft or a rotational shaft of the motor. The device has a feature that the device includes a torque variation detection means detecting a torque variation of the vehicle caused by a variation of the rotational velocity, and a compensation torque setting means setting compensation torque in an opposite phase relative to the torque variation.

Torque variation control device and computer program

A control system and method for accelerating the warm-up operation of a hybrid vehicle while preferably using the characteristics of the hybrid vehicle. The system comprises a warm-up accelerating section for accelerating warm-up of the engine by controlling the ignition timing of the engine according to a temperature of water for cooling the engine; and a power generation control section for performing power generation using the motor according to a remaining charge of a battery of the vehicle. The warm-up accelerating section has an ignition timing correcting section for correcting the ignition timing according to an amount of generated power which is controlled by the power generation control section. Therefore, in comparison with the case of performing the warm-up operation by simply using both the ignition timing retardation and the power generation, the ignition timing can be close to the optimum point, thereby improving the combustion efficiency.

Control system and method for hybrid vehicle

A hybrid vehicle comprises an engine and a motor as its drive sources. The hybrid vehicle also comprises a control device which stops the fuel supply to the engine at the time of vehicle deceleration, and performs regenerative braking by the motor depending on the deceleration state, in which the engine is a cylinder deactivation engine capable of switching between all cylinder operation for operating all cylinders and cylinder deactivation operation for deactivating at least one or more cylinders. The cylinder deactivation operation is conducted during deceleration state of the vehicle to reduce pumping losses of the engine so that the regeneration efficiency of the motor is improved. The control device comprises an abnormality detection device which detects abnormality in the cylinder deactivation engine, and a motor output limiting device which limits the output of the motor in response to the detection of the abnormality.

A control system for an internal combustion engine is disclosed. The engine has an exhaust gas recirculation passage for recirculating a portion of exhaust gases from the engine to an intake system and an exhaust gas recirculation control valve for controlling an amount of exhaust gases recirculated through the exhaust gas recirculation passage. A valve opening amount of the exhaust gas recirculation control valve is detected. A fuel amount to be supplied to the engine is calculated according to the valve opening amount of the exhaust gas recirculation control valve. An average valve opening value, a change rate of which is smaller than that of the detected valve opening amount is used to calculate a correction value for correcting the fuel supply amount. The fuel supply amount is corrected according to the calculated correction value from a time at which an opening of the exhaust gas recirculation control valve is detected.

Control system for internal combustion engine

Assistance controlling apparatus for hybrid vehicle

A vehicular power-transmission control system comprises a continuously variable transmission CVT, which transmits the output of an engine E to wheels, a starting clutch which controls the transmission of power in the continuously variable transmission, an electrical motor generator M, which can assist the engine in rotational drive, and a hydraulic pump P, which is connected to the output shaft of the engine. When the vehicle, which has come into a halt with the engine consequently stopped in an idling elimination control, is to be restarted, the power-transmission control system controls the electrical motor generator to rotate the output shaft of the engine, to which fuel supply is not allowed, thereby to drive the pump. Thereafter, when the starting clutch receiving a hydraulic pressure from the hydraulic pump starts its engagement, the power-transmission control system starts the operation of the engine.

Vehicular power-transmission control system

A failure determination system and method for an internal combustion engine and an engine control unit are provided which are capable of properly determining a failure of a variable valve mechanism for inactivating a valve system associated with at least one of cylinders during a predetermined operation of the engine, by discriminating a misfire caused by the failure of the mechanism from a normal misfire. Fuel injection valves inject fuel for each cylinder and oxygen concentration of exhaust gases is detected. A misfire condition is detected on a cylinder-by-cylinder basis. Fuel injection to a misfiring cylinder is stopped. A failure of the mechanism is determined, when a parameter based on the oxygen concentration detection indicates a richer value of an actual air-fuel ratio of the exhaust gases than a predetermined reference value does, under a condition of the fuel injection being stopped.

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Wako, Japan

Atsushi Matsubara