Honda Giken Kogyo Kabushiki Kaisha

Honda Motor Co., Ltd.

Honda Giken Kogyo K.k.

Shigetaka Kuroda

Kazutomo Sawamura

Shinichi Kitajima

Atsushi Matsubara

Teruo Wakashiro

Atsushi Izumiura

Hideyuki Oki

Hiroshi Maruyama

Masataka Chikamatsu

Takashi Kiyomiya

Takuji Ishioka

Hideyuki Takahashi

Kan Nakaune

Yasuo Nakamoto

Yoichi Iwata

Masayoshi Yamanaka

Kenji Nakano

Yuichi Shimasaki

Masaki Kanehiro

Kenichi Maeda

Asao Ukai

Yuuichi Shimasaki

Youichi Iwata

Yoshiharu Saito

Shigeru Maruyama

Hideaki Arai

Takashi Iwamoto

Takashi Hisaki

Takefumi Ikegami

Takeshi Suzuki

Kohei Hanada

Toshihiko Sato

Tsuyoshi Takizawa

Shukoh Terata

Akira Katoh

Futoshi Nishioka

Akira Kato

Toru Kitamura

Yasunari Seki

Eitetsu Akiyama

Shigeki Baba

Hironao Fukuchi

Hiroshi Murakami

Shinji Fujimoto

Jun Takahashi

Takahiro Yonekura

Hisashi Igarashi

Katsuhiro Kumagai

Hiroyuki Isegawa

Shigeru Aoki

Masahiro Takeuchi

Fumihiko Konno

Makoto Kishida

Kenichiro Ishii

Hidekazu Kano

Keisuke Uchida

Kiyoshi Asami

Naoki Tsuji

Takashi Kamimura

Akihito Ohtsu

Atsushi Hagihara

Makoto Kobayashi

Hideki Watanabe

Yoichi Nishimura

Takuya Aoki

Takayoshi Nakayama

Jiro Takagi

Mahito Shikama

Kazuhisa Yamamoto

Toshikazu Oketani

Naohisa Morishita

Tetsuya Hasebe

Tetsu Sugiyama

Hiromitsu Adachi

Masaaki Kaizuka

Tomohiro Nishi

Shinichirou Wakou

Shunichi Tsuzuki

Tetsuya Ono

Hajime Uto

Hiroshi Ikura

Hiroshi Ono

Masatoshi Udagawa

Takushi Toda

Keisuke Minatoya

Ryuuji Kouno

Shoichi Nemoto

Katuhiro Kumagai

Tadayoshi Sasaki

A misfire detecting apparatus for an internal combustion engine is provided. The engine has an output shaft connected via a torsion element to an input shaft of a transmission mechanism. A transmission rotational speed parameter indicative of a rotational speed of the input shaft is detected. A modified engine rotational speed parameter is calculated by modifying the detected engine rotational speed parameter based on the transmission rotational speed parameter, an engine rotation moment on the input side of the torsion element, and a transmission rotation moment on the output side of the torsion element. An average change amount of the modified rotational speed parameter, and an inertia speed changing component, are calculated. Further, a corrected rotational speed parameter is calculated by correcting the modified rotational speed parameter according to the average change amount and the inertia speed changing component. A relative speed parameter is calculated based on the corrected rotational speed parameter, and a determination parameter is calculated by integrating the relative speed parameter. The misfire determination is performed based on the determination parameter.

Misfire detecting apparatus for internal combustion engine

The present invention provides a hybrid vehicle driving system in which quick response and improvement in fuel economy are compatible. A hybrid vehicle driving systemof the invention includes a cylinder deactivated operation necessity determination unit for determining the necessity of a cylinder deactivated operation of an enginewhen a required driving force required on a vehicle is smaller than a driving force of the enginethat runs in the cylinder deactivated operation. When the cylinder deactivated operation is determined to be unnecessary by the cylinder deactivated operation necessity determination unit, the vehicle can be driven in an EV driving by disengaging a first clutchand a second clutch, whereas when the cylinder deactivated operation is determined to be necessary by the cylinder deactivated operation necessity determination unit, the engineruns in the cylinder deactivated operation and at least one of the first clutchand the second clutchis engaged.

Hybrid vehicle driving system

When an idling stop request is generated, in the case of a B zone (the discharge limited zone) or a C zone (the discharge prohibited zone), then an internal combustion engine ENG is made to continue driving, and charging of an electric storage device BATT is performed. Thereafter, when an idling stop release request is generated, in the case of the B zone, a vehicle is started by driving an electric motor MG, while continuing driving of the internal combustion engine ENG and setting a first clutch Cto an interrupted state. On the other hand, in the case of the C zone, the vehicle is started by continuing driving the internal combustion engine ENG, and setting the first clutch Cto the connected state.

Hybrid vehicle

A hybrid vehicle driving systemof the invention includes a cylinder deactivated operation necessity determination unit for determining the necessity of a cylinder deactivated operation of an enginewhen a required driving force required on a vehicle is smaller than a driving force of the enginethat runs in the cylinder deactivated operation. When the cylinder deactivated operation is determined to be unnecessary by the cylinder deactivated operation necessity determination unit, the vehicle can be driven in an EV driving by disengaging a first clutchand a second clutch, whereas when the cylinder deactivated operation is determined to be necessary by the cylinder deactivated operation necessity determination unit, the engineruns in the cylinder deactivated operation and at least one of the first clutchand the second clutchis engaged.

With a hybrid vehicle driven at extremely low speeds only by power from the electric motor, when a state-of-charge of the battery becomes equal to or smaller than a predetermined level or when a rotational speed required on the air conditioner compressor is less than a desired rotational speed, power from the internal combustion engine is transmitted to the output shaft by engaging the first engaging and disengaging mechanism, starting the internal combustion engine by power from the electric motor, and thereafter, engaging the first engaging and disengaging mechanism or the second engaging and disengaging mechanism between a fully applied state and a fully released state.

Hybrid vehicle control unit and control method

The present invention provides a hybrid vehicle driving system which can implement sufficient lubrication while a vehicle is being driven. A hybrid vehicle driving systemof the invention includes a lubrication pumpwhich is connected to a first input shaftand which is adapted to lubricate a transmissionand a lubricated state determination unitwhich determines a lubricated state of the transmission. When the lubricated state determination unitdetermines that lubrication is necessary, the first input shaftis rotated by an electric motorso as to drive the lubrication pump, or the first input shaftis rotated by an internal combustion engineby engaging a first engaging and disengaging unit to thereby drive the lubrication pump

In a twin-clutch type transmission in which an electric motor is connected to one of transmission shafts, when downshifting is executed during EV running, a braking force is ensured by controlling in a cooperative fashion a regenerative brake and wheel brakes Bto Bso as to compensate for the loss of braking force during downshifting by the wheel brakes Bto Bor a braking force is ensured by making use of engine braking effects.

Vehicle driving system

An air conditioning device for a vehicle having a regenerative section improves efficiency of regeneration. The air conditioning device comprises a compressor () connected to an output shaft () of an engine () via an electromagnetic clutch (), a motor-generator () for electrically recovering kinetic energy of the vehicle () during deceleration, a battery () for storing energy regenerated by the motor-generator (), and a motor-driven compressor (). When the vehicle () is in a deceleration state, the compressor () is disconnected from the engine () by disengaging the electromagnetic clutch (), and air conditioning is performed by the motor-driven compressor ().

Air conditioning device for vehicle

A cylinder operation control apparatus includes: an internal combustion engine (E) which is adapted to operate in an all-cylinder activation mode and in a cylinder deactivation mode; a lift amount changing device (VT) which is associated with the internal combustion engine (E), and which enables switching between the all-cylinder activation mode and the cylinder deactivation mode by changing the amount of lifts of intake and exhaust valves (IV, EV) associated with the cylinders; a lift operating device () which is associated with the lift amount changing device (VT) to operate the same; a cylinder activation enforcing device (') which is operatively disposed between the lift amount changing device (VT) and the lift operating device () so as to enforce the all-cylinder activation mode as necessary.

Cylinder operation control apparatus for internal combustion engine

A hydraulic control apparatus for a hybrid vehicle, which enables a smooth torque transmission when an engine of the vehicle is started from an idling stop state. The hydraulic control apparatus includes an engine and a motor as power sources, a transmission having a torque converter, a clutch for a starting gear, an engine automatic stop and start device which is associated with the engine, a motor-driven oil pump for supplying oil pressure to the transmission, a brake pedal sensor, an accelerator pedal sensor, an engine revolution rate sensor. The oil pressure applied to the clutch is controlled to a level corresponding to a creeping torque when the engine is automatically stopped. When the brake pedal is released, the engine is automatically started, the accelerator pedal is not depressed, and the engine revolution rate is less than an idling revolution rate, the oil pressure applied to the clutch is maintained to the level corresponding to the creeping torque.

Hydraulic control apparatus for hybrid vehicle

A control system for a hybrid vehicle, which enables the hybrid vehicle to optimally selectively use driven modes to attain excellent fuel economy and thereby make it possible to improve fuel economy. The hybrid vehicle is operated in an engine-driven mode or a motor-driven mode, and recovers electric energy for driving an electric motor, using the output from the engine. The control system calculates a driving fuel consumption amount of the engine required for driving the hybrid vehicle in the engine-driven mode and a recovering fuel consumption amount of the engine required for recovering electric energy to be consumed when the hybrid vehicle is driven in the motor-driven mode, and sets the driven mode to the motor-driven mode when the recovering fuel consumption amount is smaller than the driving fuel consumption amount, and to the engine-driven mode when the former is larger than the latter.

Control system for hybrid vehicle

A valve control system for an internal combustion engine, which enables the operating mode of a valve system to be switched in optimal timing while preventing the driver from feeling the switching operation so busy and at the same time securing feeling of acceleration, thereby improving drivability. A variable valve-actuating mechanism is capable of selectively switching the operating mode of a valve system including intake valves and an exhaust valve between a plurality of operating modes different in output characteristics. Whether or not the operating mode of the valve system should be switched is determined. The execution of the switching of the operating mode of the valve system based on the determination is suppressed according to a degree of suppression set depending on detected load on the engine.

Valve control system for internal combustion engine

A control apparatus for an on-vehicle electricity storage device, which enables an appropriate charging of the on-vehicle electricity storage device while preventing degradation of the on-vehicle electricity storage device. The counter value of a high voltage maintaining counter CVBV and the timer value of a sustain time subtraction timer TACGare increased over the period after time tin which the inter-terminal voltage VB of the battery is maintained to be greater than the predetermined mode switching threshold voltage #VBV. The counter value and the timer value decrease over the period from time tto time tAt time tthe operation mode is switched from a non-charging mode to a charging mode.

Control apparatus for on-vehicle electricity storage device

A control apparatus of a hybrid vehicle is provided, capable of charging the battery device when the state of charge of the battery device tends to decrease and the initial state of charge of the battery device is reduced by a predetermined amount. The present device comprises a lower limit threshold value setting device S, an upper limit threshold value setting device for setting the lower limit and upper limit threshold values of the discharge amount of the battery device, a mode setting device Sfor increasing the state of charge when the state of charge is reduced to the lower limit threshold value, a mode setting release device Sfor releasing the mode setting changed by the mode setting device, and a discharge depth detecting device Sfor detecting the discharge amount of the present state of charge by comparison with the initial state of charge. The threshold value for determining whether it is necessary for the motor to assist the engine is modified depending upon the discharge depth.

Control apparatus for hybrid vehicles

In order to improve the fuel consumption efficiency of a hybrid vehicle, a control apparatusfor a hybrid vehicle is provided, which comprises as a power source a motor M and an engine E capable of executing partial cylinder deactivation operation and the driving force of at least one of these is transmitted to wheels for running the vehicle. When the required output is larger than the output of the engine under partial cylinder deactivation operation, and is smaller than the total output of the engine and the motor, which is adjustable for assisting the engine, the control apparatus operates the engine under partial deactivation and adjusts the motor output so as to compensate the difference between the total output of the power source and the output of the partial cylinder deactivated engine.

Control apparatus for hybrid vehicle

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Wako, Japan

Shigetaka Kuroda