Honda Giken Kogyo Kabushiki Kaisha

Honda Motor Co., Ltd.

Ngk Spark Plug Company, Limited

Nifco Inc.

Honda Giken Kogyo Kabushiki

Kokoku Intech Co., Ltd.

Mitsuba Corporation

Keihin Corporation

Masaki Ueno

Yoshihisa Iwaki

Shusuke Akazaki

Masahiro Sato

Yuji Yasui

Tadashi Sato

Shiro Takakura

Yasuyuki Miyahara

Masaya Agata

Yosuke Kosaka

Tadashi Satoh

Hajime Uto

Hideharu Takamiya

Makoto Kobayashi

Hiroshi Sato

Hideki Hayashi

Tetsuo Endo

Hideharu Yamazaki

Kei Machida

Takashi Haga

Masaaki Nagashima

Hidekazu Hironobu

Ken Ogawa

Yasunori Ehara

Takashi Iwamoto

Hiroshi Kitagawa

Isao Komoriya

Minoru Ueda

Osamu Suzuki

Kohei Hanada

Hiroshi Tagami

Hiroshi Inaoka

Katsuji Wada

Yutaka Kikuchi

Satoshi Yamaguchi

Kenichi Ohmori

Masaaki Yamaguchi

Shuji Nagatani

Toshihide Kimisawa

Mamoru Hasegawa

Hideki Sakamoto

Masanobu Takazawa

Futoshi Koga

Masahiro Takeuchi

Takeshi Shimura

Kentaro Onuma

Daisuke Shiomi

Akio Futatsudera

Hiroshi Yoshida

Masahiko Takenaka

Yuto Katori

Noritaka Kimura

Hisashi Ito

Kosuke Ihara

Yosuke Yamada

Akihiro Katsuura

Yasuaki Nagai

Katsuichi Yagisawa

Tomoyuki Tagami

Haruya Kitano

Mitsuhiro Iwadare

Yuuichi Shimasaki

Shizuo Kawano

Koichi Nakajima

Jun Kato

Mitsuo Kusa

Takashi Udono

Kensuke Yamamoto

Kentaro Miki

Tetsu Horiuchi

Yuji Kashiwabara

Masaki Suzuki

Toshikazu Saito

Eri Itou

Kenichiro Asai

Hirofumi Hino

Masaaki Tomii

Katsunori Komuro

Chiho Chinda

Tomohiro Tsutsumi

Michiru Fukuda

Masashi Hidaka

Atsushi Miyaki

Katsuya Shinjo

Takashi Otobe

Hirohide Fujino

Eri Ito

Motohiro Mishima

Tsukasa Itou

Nobuyuki Oda

Kimitake Ito

Shinichiro Horisoko

Kiyoshi Hashimoto

Toshihiro Arai

Toshihiko Naito

Mineo Torikai

Akihiro Nakamaru

Akira Hayashi

A supercharging pressure setting apparatus, includes: an engine mounted on a vehicle; a supercharger compressing an intake air introduced to the engine; a supercharger actuator adjusting a supercharging pressure to a target supercharging pressure; and a processor. The processor acquires an intake air amount to the engine; acquires a target intake air amount to the engine; sets the target supercharging pressure based on an operation state of the vehicle; determines whether the operation state of the vehicle is one of an accelerating state and a transition state to the accelerating state; and calculates a difference between the intake air amount and the target intake air amount. The processor sets the target supercharging pressure based on the difference when it is determined that the operation state of the vehicle is one of the accelerating state and the transition state.

Supercharging pressure setting apparatus

A control device of a vehicle capable of improving acceleration responsiveness and suppressing increase in the NOx emission amount when a required torque is increased during a steady lean operation. A target air-fuel ratio (AFCMD) is set according to an accelerator pedal operation of a driver. When the driver depresses an accelerator pedal to make an acceleration request during the lean operation, in which the AFCMD is set to a predetermined lean air-fuel ratio (AFLN), air-fuel ratio reduction control is executed to reduce the AFCMD according to the acceleration request. In the air-fuel ratio reduction control, when the AFCMD calculated according to a required torque (TRQCMD) is smaller than a limit air-fuel ratio (AFLMT), the AFCMD is set to the AFLMT, and the AFLMT is set to a value smaller than the AFLN set in a steady state of the lean operation and larger than a theoretical air-fuel ratio (AFST).

Control device of vehicle

A control device of an internal-combustion engine capable of improving merchantability by promptly and appropriately securing an in-cylinder fresh air amount even when an internal-combustion engine including a boost device and an EGR device is in a transient operation state is provided. A control deviceincludes an ECU. The ECUcalculates an intake air amount GGAScyl, sets an upper-limit target fresh air amount GAIR_hisH, controls a boost operation of a boost devicewhen an operating range of an internal-combustion engineis in a predetermined boost range, and controls an EGR deviceso that exhaust gas recirculation is stopped when the intake air amount GGAScyl does not reach an upper-limit target fresh air amount GAIR_hisH and the exhaust gas recirculation is executed when the intake air amount GGAScyl reaches the upper-limit target fresh air amount GAIR_hisH in the predetermined boost range.

Control device of internal-combustion engine

Provided is a control device for an internal combustion engine, which can ensure a stable combustion state of the internal combustion engine even under a high-humidity environment condition, thereby improving the merchantability. The control device for the internal combustion engine includes an ECU (electronic control unit). The ECU calculates a basic target EGR amount according to an operating state of the internal combustion engine, calculates a water vapor amount in air drawn into an intake passage of the internal combustion engine, calculates an EGR conversion amount by using the water vapor amount, calculates a target EGR amount by subtracting the EGR conversion amount from the basic target EGR amount, and controls internal EGR and external EGR of the internal combustion engine by using the target EGR amount.

Control device for internal combustion engine

In a control device of an internal-combustion engine according to the disclosure, an intake throttle valve () for adjusting an EGR valve differential pressure (&#x394;PEGR) is provided, an EGR valve upstream pressure (PEGR) is estimated by using a target fresh air amount (GAIRCMD) (step), a target differential pressure (&#x394;PEGRCMD) is set to a smaller value as the target fresh air amount (GAIRCMD) becomes smaller (FIG.), and a difference between the EGR valve upstream pressure (PEGR) and the target differential pressure (&#x394;PEGRCMD) is set as a target valve downstream pressure (PCMD) (step). By using the target fresh air amount (GAIRCMD), the EGR valve upstream pressure (PEGR), and the target valve downstream pressure (PCMD), the target EGR valve opening degree (LEGRCMD) is set (step), and an EGR valve () is controlled based on the target EGR valve opening degree (step).

A controller for an internal combustion engine includes a regenerative device and at least one of ignition timing circuitry and opening degree circuitry. The ignition timing circuitry is configured to retard an ignition timing so as to decrease a torque generated by the internal combustion engine in a shift-up operation of a multi-stage automatic transmission during a supercharging operation by a supercharger. The opening degree circuitry is configured to reduce an opening degree of a throttle valve so as to decrease a torque generated by the internal combustion engine in a shift-up operation of a multi-stage automatic transmission during a supercharging operation by a supercharger. The regenerative device is coupled to a compressor or a turbine of the supercharger to regenerate rotational energy in the compressor or the turbine so as to decrease the torque in the shift-up operation during the supercharging operation.

Controller and internal combustion engine system

A control device for an internal combustion engine includes circuitry. The circuitry is configured to determine whether a running state of the internal combustion engine is in an auxiliary driving state in which an electric motor drives a compressor. The circuitry is configured to increase an opening degree of a waste gate valve when the running state is determined to be in the auxiliary driving state. The circuitry is configured to control a valve actuation phase variable mechanism to increase an overlap period in which a valve opening period of an intake valve and a valve opening period of an exhaust valve are overlapped with each other when the running state is determined to be in the auxiliary driving state.

Control device, internal combustion engine system, and method

A control apparatus for an internal combustion engine, which is capable of, when controlling a variable intake cam phase mechanism and a variable exhaust cam phase mechanism, ensuring a stable combustion of a mixture and improving the drivability, even when one of the two is in a failure state. The control apparatus includes an ECU. The ECU calculates an intake cam phase and an exhaust cam phase, determines, based on the calculated intake cam phase and exhaust cam phase, whether or not there has occurred a failure state of one of the mechanisms, in which the valve overlap period becomes longer than during a normal time, and controls, when it is determined that there has occurred the failure state of the one mechanism, the other mechanism such that the valve overlap period becomes shorter.

Control apparatus for internal combustion engine

A control device for an internal combustion engine including a supercharger and a waste gate valve, the supercharger including a compressor an electric motor, and a turbine, the turbine being provided in an exhaust passage of the internal combustion engine, the waste gate valve being provided in a bypass passage that bypasses the turbine, the control device includes circuitry. The circuitry is configured to drive the electric motor in a high-load operation state in which the load of the internal combustion engine is determined to be equal to or larger than a first reference load and the temperature of the exhaust gas is determined to be expected to be higher than a reference temperature. The circuitry is configured to increase an opening degree of the waste gate valve in the high-load operation state.

Control device, method, and internal combusion engine

A control system for an internal combustion engine, which is capable of quickly and properly ensuring excellent fuel economy of the engine even when atmospheric pressure has changed. The control system includes an ECU. The ECU performs weighted average calculation on lowland map values and highland map values, based on atmospheric pressure, to thereby calculate map values of a demanded torque that minimize a fuel consumption ratio of the engine in the atmospheric pressure, and calculates engine demanded output. The ECU calculates demanded torque and demanded engine speed using the map values and the engine demanded output, respectively. The ECU controls the engine using the demanded torque.

Control system for internal combustion engine

A control apparatus for an internal combustion engine, which, in the case of intake-side and exhaust-side cleaning controls being performed, is capable of ensuring stable combustion of a mixture when the engine is returned from a decelerating FC operation to a normal operation, thereby making it possible to enhance marketability. The control apparatus for the engine includes an ECU. The ECU performs intake-side cleaning control for controlling an intake cam phase CAIN to a predetermined most advanced value CAIN_ADV so as to increase a valve overlap period of an intake valve and an exhaust valve, and performs exhaust-side cleaning control for controlling an exhaust cam phase CAEX to a predetermined most retarded value CAEX_RET so as to increase the valve overlap period of the intake valve and the exhaust valve. Further, during execution of one of the intake-side and exhaust-side cleaning controls, the ECU inhibits execution of the other.

A control system and a control method for an internal combustion engine, which are capable of accurately calculating an in-cylinder gas amount and an EGR ratio by a relatively simple method even in a case where an in-cylinder gas temperature is changed by execution of internal EGR, and properly controlling the engine using the EGR ratio thus calculated. An in-cylinder gas amount Gact actually filled in the cylinder is calculated by correcting an ideal in-cylinder gas amount Gth, which is an amount of gases filled in a cylinder in an ideal state in which it is assumed that no exhaust gases of the engine are recirculated into the cylinder, using an ideal in-cylinder gas temperature Tcylth according to an in-cylinder gas temperature Tcyl, and an EGR ratio REGRT is calculated using the in-cylinder gas amount Gact and an intake air amount Gaircyl.

Control system and control method for internal combustion engine

A valve reference position-learning device for an internal combustion engine, which is capable of accurately learning the reference position of a valve both before and after the warm-up of the engine, while properly reflecting thereon a deviation of the reference position caused by the thermal elongation of the valve and drive system after the warm-up of the engine. The valve reference position-learning device calculates and updates a learned value of the reference position of the wastegate valve both at and after the start of the engine, by first and second learnings, respectively. The learned value calculated by the first learning is stored as an existing learned value. Further, at the start of the engine, if the calculation of the learned value is not completed, the learned value is set to the existing stored learned value.

Valve reference position-learning device for internal combustion engine

A pumping loss calculation device for an internal combustion engine, which is capable of accurately calculating the pumping loss of the engine while reflecting thereon the pumping loss which varies with a change in opening timing of an exhaust valve. The pumping loss calculation device calculates a basic amount of a pumping loss torque based on intake and exhaust pressures, a pumping loss torque of the pumping loss torque of the engine, which varies with a change in the opening timing of the exhaust valve, as an exhaust gas sweep-out loss torque, based on the estimated in-cylinder gas amount and a detected exhaust phase, and the pumping loss torque based on the basic amount and the exhaust gas sweep-out loss torque.

Pumping loss calculation device for internal combustion engine

An intake control system for an internal combustion engine, which, even when there are a plurality of intake air amounts for attaining one target torque, is capable of positively selecting a minimum intake air amount therefrom without causing hunting, and setting the minimum intake air amount as a target intake air amount, thereby making it possible to improve fuel economy. The intake control system calculates a maximum intake air amount, sets a plurality of provisional intake air amounts within a range of 0 to the maximum intake air amount, calculates torques estimated to be output from the engine with respect to the provisional intake air amounts, respectively, selects a minimum provisional intake air amount that makes the estimated torque equal to or close to the target torque from the relationship between the provisional intake air amounts and the estimated torques, and sets the same as the target intake air amount.

Intake control system for internal combustion engine

Growing community of inventors

Wako, Japan

Masaki Ueno