Honda Giken Kogyo Kabushiki Kaisha

Honda Giken Kogyo K.k.

Takashi Kiyomiya

Atsushi Matsubara

Atsushi Izumiura

Shigetaka Kuroda

Shinichi Kitajima

Hideyuki Oki

Teruo Wakashiro

Kazutomo Sawamura

Kan Nakaune

Asao Ukai

Katsuhiro Kumagai

Hideyuki Takahashi

Hironao Fukuchi

Yasuo Nakamoto

Kenji Nakano

Fumihiko Konno

Youichi Iwata

Keisuke Uchida

Hideo Watanabe

Takashi Iwamoto

Hiroshi Kitagawa

Sachito Fujimoto

Takeshi Suzuki

Shigeki Baba

Kazumi Yamazaki

Masakazu Kitamoto

Koichi Hidano

Kenichi Sawada

Masahiko Yakuwa

Fumio Hosoda

Hideo Moriwaki

Shoji Takahashi

Hiroshi Ono

Naoya Miyamoto

Masashi Takezawa

Hideki Kaseyama

Shouji Sekiai

Nobuyuki Irie

In order to improve the reliability of engine starting by using a motor, the engine cranking using the motor is started according to a request for starting the engine, and when the elapsed time from the starting time of the engine operation reaches a first predetermined time and it is detected that the transmission is in the in-gear state, the engine cranking is continued if the engine speed is equal to or less than a predetermined engine speed defined for determining whether the engine reaches a predetermined starting phase. The engine cranking may be continued for a second predetermined time which is longer than the first predetermined time.

Engine starting control system and method therefor

Assistance controlling apparatus for hybrid vehicle

A hybrid vehicle control apparatus is provided, wherein an unpleasant sensation is not imparted to a driver depressing an accelerator pedal at the time of departure. In a hybrid vehicle control apparatus with an engine and a motor as the drive sources, and a battery for storing electrical energy from the engine or the kinetic energy of the vehicle converted by the motor, the vehicle is provided with an automatic transmission. Moreover, there is provided a discharge suppression mode which suppresses discharge from the remaining battery charge detected by a battery ECU, and a charge/discharge permit mode which permits charge/discharge of the battery. At a time of vehicle departure, departure assistance is performed only when a degree of throttle opening showing an acceleration intention of the driver exceeds a determination threshold which is larger than a determination threshold for at the time of the discharge/charge permit mode.

Control apparatus for hybrid vehicle

Conditions for permitting operation of vibration control are that; a stored charge of a battery for an electric motor detected by storage state monitoring devices and is larger than a predetermined storage charge threshold, a vehicle's engine is idling, engine speed is within a prescribed range, and engine load is within a prescribed range. When all these conditions are satisfied, vibration damping control by a vibration damping control device is performed.

A control system for an internal combustion engine having an intake system and an exhaust system is disclosed. The exhaust system includes a catalyst, and the intake system includes a throttle valve. The engine is mounted on a vehicle having a brake booster to which an intake pressure at downstream of the throttle valve is introduced. The catalyst temperature rise control in which the intake air amount is increased after starting of the engine and the ignition timing is retarded according to a rotational speed of the engine is performed. When a pressure difference between the detected intake pressure and the atmospheric pressure during the catalyst temperature raising control is less than a predetermined pressure, the increased intake air amount and the retard amount of the ignition timing is gradually decreased.

Control system for internal combustion engine

An engine automatic start stop control apparatus controls an engine of a vehicle to be automatically stopped or started in response to driving conditions of a vehicle. Particularly, the apparatus is applied to the vehicle that performs idle stop control for reduction of discharge gas. Herein, the apparatus controls the engine to restart based upon determination for restarting the engine under an engine stop mode. Namely, the apparatus controls the engine to restart if a driver depresses a clutch pedal or if a driver does not depress a brake pedal during an engine stall in which engine speed becomes zero. Thus, it is possible to restart the engine by prescribed operations even if the driver mistakenly recognizes that the engine is stopped by automatic stop control although the engine actually stalls due to an error operation of the driver so that the engine speed becomes zero. This improves drivability for the driver who handles the vehicle, particularly a hybrid vehicle which is capable of independently running by using an electric motor only.

Engine automatic start stop control apparatus

In order to prevent an occurrence of dieseling phenomenon, and to prevent engine rotation speed from decreasing during idle operation or the idle operation from being stopped, in step S , it is determined whether the flag value of an idle stop flag F_IDLSTP is &ldquo;1&rdquo; or not. If it is determined that the determination result is &ldquo;YES&rdquo;, that is, if it is determined that the internal combustion engine body is stopped, 0% is set to a target purge control valve drive duty value PGCMD (step S ), and 0 is set to the target purge flow rate QPGC (step S ). If it is determined that the determination result is &ldquo;NO&rdquo;, that is, when the internal combustion engine body is in operation, PGCMD calculation processing is executed (step S ). While the internal combustion engine body is stopped, execution of purge is stopped, thereby an occurrence of a dieseling phenomenon which is caused because the flow rate of the air flowing into the internal combustion engine body increases and the air is compressed, is prevented, thereby suppressing vibration from occurring in the internal combustion engine body.

Vaporized fuel treatment apparatus of internal combustion engine

A control device for a hybrid vehicle powered from an engine and an assist motor for supplying electric power in an amount predetermined according to running conditions of the vehicle further includes means for detecting a catalyzer temperature and correcting the predetermined assist power value according to the detected catalyzer temperature when accelerating and means for preventing the idling engine from being cut off when detected catalyzer temperature is lower than a preset temperature. This control device thus realizes rapid heating of the catalyzer device to a temperature necessary for activating the catalyzer therein by adequately correcting the assist power value of the motor according to the current catalyzer temperature when accelerating and by preventing the idling engine from being cut off while the catalyzer device has a low temperature.

Control device for a hybrid vehicle

An engine control system for a hybrid vehicle having an internal combustion engine and an electric motor as driving force sources, for permitting stopping and restarting of the engine in accordance with predetermined drive conditions. The engine control system includes a fuel cutter for cutting fuel supply to the engine when the vehicle decelerates and an engine speed detector for detecting an engine speed. Stopping of the engine is initiated by cutting the fuel supply by the fuel cutter, and when the engine speed becomes equal to or lower than a predetermined speed, the engine is stopped by operating the motor as a generator and by cutting the fuel supply.

Engine control system for hybrid vehicle

The control apparatus for the hybrid vehicle is provided with a combustion engine for outputting a driving force, an electric motor for generating a force for assisting the output from the engine, a power storage unit for storing electric energy generated by the motor acting as a generator using the output from the engine and electric energy regenerated by the motor when the vehicle decelerates. The control apparatus including: an engine temperature measuring device for measuring the temperature of the engine; and a generated energy increasing device for increasing the energy generated by the motor acting as a generator when the vehicle is traveling by the driving force from the engine without the assistance of the motor, and when the engine temperature measuring device determines that the temperature of the engine is equal to or below a predetermined temperature.

The present invention relates to a power generation control apparatus for a hybrid vehicle. The hybrid vehicle comprises an engine which outputs a driving force for the hybrid vehicle; a motor which outputs an assistant driving force so as to assist the driving force of the engine; a power storage unit; and a power generation control apparatus which controls the power generation by the motor. The power generation control apparatus comprises a load torque calculation device which calculates the load torque to be applied to an engine of the hybrid vehicle for generating electrical power used in the hybrid vehicle when the engine is idling; a generable torque calculation device which calculates torque generable by the engine when the engine is idling; and a power generation load torque determination device which determines a limiting value of a power generation load torque to be applied to the engine in accordance with the load torque calculated by the load torque calculation device and the generable torque calculated by the generable torque calculation device.

Apparatus and method for controlling power generation for hybrid vehicle

An engine control system and method is disclosed, which reduces driver's feeling of unease relating to the operation of driving a vehicle which is idle-controlled so as to reduce the exhaust gas discharge, thereby improving the driving operability. The method comprising the steps of detecting a switch of the driving mode of the vehicle from a first normal driving range to a second normal driving range different from the first normal driving range; detecting whether the engine is currently in a stopped state due to an automatic stop operation; detecting whether a brake for stopping the vehicle is currently being operated; and automatically starting the engine if it is determined that the engine is currently in a stopped state due to the automatic stop operation, and that the driving mode has been switched to the second normal driving range, and that the brake is not currently being operated.

Engine control system and method

A control device for a hybrid vehicle including an engine for outputting a propulsion force for the vehicle, a motor for assisting the output from the engine, and a storage unit for storing generated energy when the motor is used as a generator under the output from the engine and regenerated engine obtained from regenerative braking of the motor at the time of vehicle deceleration. Moreover, the control device includes an engine output detection device for detecting a change in output from the engine, and a motor control device for, in the case where an increase in output from the engine is detected at the time of vehicle traveling when the motor is not assisting the output from the engine, simultaneous with the increase in output, converting the increase amount in output into the generated energy using the motor.

Hybrid vehicle control device

The control system of the present invention is provided for a hybrid vehicle with an engine, a motor, and a power storage unit. The control system selects one of an air intake passage pressure assist mode (PB assist mode) corresponding to a partial load range of the engine and a throttle assist mode corresponding to the opening state of a throttle. The control system comprises: an assist mode determining device for determining whether the vehicle is in the PB assist mode or in the throttle assist mode, based on the opening state of a throttle; a PB assist amount determining device for determining a base assist amount in the PB assist mode, based on the rotational speed of the engine and an air intake passage pressure (PB); a throttle assist amount determining device for determining the base assist amount in the throttle assist mode, based on the rotational speed of the engine, the base assist amount including a range defined by an upper threshold value and a lower threshold value; and a throttle assist amount changer for gradually changing the assist amount determined by the throttle assist amount determining device between the upper threshold value and the lower threshold value when the vehicle runs through a partial load range to a full load range of the engine.

Control system for hybrid vehicle

A control apparatus for a hybrid vehicle having a dynamotor which operates as a motor for assisting the output of an internal combustion engine and which operates as a generator for regenerating the running energy of the vehicle. The control apparatus, in accordance with operating conditions of the vehicle, controls an assist operation for supplying electric power from a storage device to the dynamotor and a regenerative operation for charging the storage device by the generated power of the dynamotor, and determines an acceleration mode for performing an assist operation or a cruising mode for selectively performing the assist operation and a regenerative operation, in accordance with an engine rotational speed and a throttle valve opening degree, or a vehicle speed of the vehicle and the throttle valve opening degree.

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Wako, Japan

Takashi Kiyomiya