Hitachi, Ltd.

Hitachi Automotive Systems, Ltd.

Other

Hitachi Car Engineering Co., Ltd.

Nissan Motor Company Limited

Hitachi Astemo Ltd.

Hitachi Automotive Engineering, Ltd.

Internix Kabushiki Kaisha

Toshio Hori

Shinji Nakagawa

Yoshikuni Kurashima

Yoichi Iihoshi

Takeshi Atago

Shin Yamauchi

Masahiro Toyohara

Masami Nagano

Mamoru Nemoto

Yoshiaki Nagasawa

Yoshiyuki Yoshida

Takeshi Tsuyuki

Osamu Matsuno

Kunihiko Suzuki

Hidefumi Iwaki

Kohei Suzuki

Shinya Satou

Koji Matsufuji

Takafumi Arakawa

Satoru Osaki

Minoru Ohsuga

Hiroshi Kimura

Nobuo Kurihara

Yoshihiko Akagi

Toshihiro Aono

Naoyuki Tashiro

Youichi Iihoshi

Shigeyuki Nonomura

Haoyun Shi

Kimio Hoshi

Hatsuo Nagaishi

Hideyuki Sakamoto

Motoyuki Abe

Yutaka Takaku

Yujiro Kaneko

Teppei Hirotsu

Takahiro Yoshino

Ryo Kusakabe

Kenichi Goto

Takashi Okamoto

Osamu Kuroda

Akihiro Sato

Akira Nishioka

Minoru Oosuga

Satoshi Hirano

Yuichi Kitahara

Hideharu Ehara

Ayumu Hatanaka

Takao Fukuda

Akihito Numata

Eisaku Fukuchi

Masato Higuma

Tomohiko Takahashi

Hirofumi Yano

Keiichi Uraki

Koji Onishi

Shigenori Nakazato

Hiroshi Miyamoto

Keisuke Fujiwara

Hiroshi Sekine

Kenji Takada

Hidefumi Hatsuzawa

Shinsaku Tsukada

Kiyoshi Aiki

Heikichi Kamoshita

Makoto Kawano

Akira Hikichi

Kosaku Shimada

Kentarou Shiga

Toyoshi Nemoto

Yoichi Ilhoshi

Transmission shocks and idling defects such as engine racing and rough idling due to aging of a throttle opening area are prevented from occurring. An internal combustion engine control apparatus for controlling an internal combustion engine that has an air flow rate sensor for measuring a rate of air represented as an actual air rate, the air flowing into a cylinder, and a throttle valve for adjusting the rate of air, includes a throttle valve controlling section for controlling a throttle opening of the throttle valve to reach a preset throttle opening set depending on a target air rate for realizing a demand torque, and a throttle opening correcting section for correcting the preset throttle opening on the basis of the target air rate upon fuel cutoff that stops a fuel from being supplied to the internal combustion engine and of an actual air rate measured by the air flow rate sensor.

Internal combustion engine control device

In a constant-speed traveling mode or a follow-up traveling mode, reduction of fuel consumption and improvement of drivability are both achieved. An ECUhas an ISG connected to an engine and a battery connected to the ISG. The ECUhas an ISG control unitthat performs control for supplying power to the ISG from the battery to rotationally drive the ISG, or to drive the ISG to generate power for charging the battery. In one cycle of a traveling mode until completion of deceleration traveling after acceleration traveling is started so as to achieve a target vehicle speed, the ISG control unitdrives the ISG such that a remaining charge amount of the battery falls within a set range at completion of the deceleration traveling, and a traveling acceleration/deceleration falls within a predetermined requested acceleration/deceleration.

Hybrid vehicle cruise control device

A novel control device for an internal combustion engine capable of highly accurately estimating an EGR amount (rate) during the transient state is provided. A first EGR rate is determined using, as an input, a detection signal of an EGR sensor provided on the downstream side of a throttle valve which adjusts the flow rate of a mixed gas of air and EGR gas flowing through an intake pipe, a second EGR rate is estimated by calculating a predetermined equation using, as an input, at least a detection signal of an air flow sensor and an EGR valve opening degree sensor, a third EGR rate is determined by carrying out delay processing on the second EGR rate corresponding to a response delay of the EGR sensor, and the second EGR rate is subjected to learning correction by reflecting a difference between the third EGR rate and the first EGR rate.

Control device for internal combustion engine

There is provided a vehicle-mounted control device that, when a restart request is generated during a time interval between the fulfillment of an engine automatic stop condition and complete stop, decreases a charging efficiency of an engine by means of at least one of a throttle valve and an intake valve to prevent an increase in the reverse rotational frequency of the engine, thereby ensuring the durability of the starting device of the engine, and preventing an accelerator response from deteriorating when a restart request based on the accelerator operation is generated. In the vehicle-mounted control device that controls a charging efficiency of the engine on the basis of the requested engine output amount, the engine is automatically stopped when a predetermined automatic stop condition is fulfilled, and a charging efficiency at the time when a restart condition of the engine has been fulfilled on the basis of an engine output request generated during a time interval between the fulfillment of the automatic stop condition and complete stop of the engine is made lower than a charging efficiency for the requested engine output amount.

Vehicle-mounted control device

Provided is a novel control device of an internal combustion engine capable of estimating an EGR rate in a transient state with high accuracy. Thus, in the present invention, unit spaces are formed by dividing a reference space of the intake passage into a plurality of spaces along a streamline through which the gas mixture of the intake air and the EGR gas flows, a physical model based on an advection equation for estimating the EGR rate of the gas mixture is established so as to correspond to each of the unit spaces, and the EGR rate at which the gas mixture flows into the combustion chamber is estimated by sequentially estimating the EGR rates of the unit spaces connected to head unit spaces from the head unit spaces by the physical model.

An object is to provide a type of device capable of properly cooling a bearing of a throttle body even under a condition that the throttle body receives heat of high-temperature intake air or exhaust gas. In the present invention, an engine coolant passage that guides a coolant of an engine is provided integrally with a member fixing a bearing to be adjacent to a circumferential wall of the bearing of the member fixing the bearing, which supports a throttle shaft, and heat transferred from the bearing (or likely to be transferred to the bearing) via the member fixing the bearing is carried away to the outside of a throttle body by the engine coolant.

Valve body, electronic control throttle body, motor-driven throttle body, and valve device

An object of the present invention is to reduce discomfort of a driver, by appropriately controlling a vehicle, when driving a vehicle capable of changing a plurality of different traveling states of a power transmission state and a traveling state of an engine during traveling. The present invention is a vehicle control device for controlling a vehicle having a power transmission mechanism which controls a power transmission state between an engine and an axle, and braking means. The vehicle control device includes, as vehicle traveling states, a power transmission engine stop traveling state in which power is transmitted by the power transmission mechanism and fuel supply to the engine is stopped to cause the vehicle to travel, and a power shutoff brake traveling state in which power from the power transmission mechanism is shut off, the fuel supply to the engine is stopped, the braking means is controlled so that the braking force is smaller than the power transmission engine stop traveling state, and the vehicle is caused to travel.

Vehicle control device

The present invention suppresses the worsening of stability due to a variation in EGR amounts between cylinders in a spark ignition engine. An engine control device for controlling a spark ignition engine equipped with an EGR means for recirculating exhaust gas in a combustion chamber and an air-fuel-ratio detection means for detecting the air-fuel ratio in each cylinder, the engine control device being characterized by being equipped with a means for changing the parameters for ignition control of a rich cylinder, when the air-fuel ratio of cylinders varies and there are richer cylinders and leaner cylinders relative to a prescribed air-fuel ratio during the execution of exhaust gas recirculation by the EGR means.

Engine control device

While a vehicle is coasting with an engine being automatically stopped and a power transmission path between the engine and wheels being disengaged, when a deceleration request is made and the engine is restarted with the power transmission path being engaged, a deceleration level increases relative to the deceleration level required by a driver or the vehicle, thereby lowering drivability. A vehicle control apparatus includes a deceleration level control unit that controls the deceleration level of the vehicle such that, during travelling of the vehicle continuing to travel with a power transmission mechanism between the engine and the wheels being disengaged, when the deceleration request is made and the engine is started by an engagement of the power transmission mechanism, the deceleration level becomes a target deceleration level calculated from a first target deceleration level generated after the engagement of the power transmission mechanism is complete and a second target deceleration level generated in response to the deceleration request.

The purpose of the present invention is to detect deterioration of dead time characteristics of an air-fuel ratio sensor with high accuracy without causing running performance and exhaust performance to worsen. The present invention provides a control device for an engine, characterized by being equipped with: a means for detecting an air-fuel ratio; a means for changing the air-fuel ratio in a predetermined cycle; and a means for sending a notification of an abnormality in the air-fuel ratio detection means or causing at least a portion of the engine control to run in a fail-safe mode when the amplitude of an output signal of the air-fuel ratio detection means at a predetermined frequency is within a predetermined range and the required time or required angle to arrive at a predetermined value of the output signal of the air-fuel ratio detection means from a reference position or reference time point of an engine-related parameter is equal to a predetermined value or higher.

Control device for engine

Introduction of a low fuel consumption technique such as downsizing turbos and idling stop decreases an intake pipe negative pressure (pump loss) of an internal combustion engine, and results in difficulty in emitting (evaporative fuel purge) a volatile fuel (volatile fuel) in a fuel tank by the negative pressure of the intake pipe of the internal combustion engine. A control device includes: a purge control unit which controls a purge valve which emits a volatile fuel of a fuel tank or a canister to an intake pipe of an internal combustion engine; and a power transmission control unit which controls a power transmission mechanism between the internal combustion engine and a drive wheel, and, in a state where the power transmission control unit disconnects a clutch, and the vehicle is coasting, the purge control unit opens the evaporative fuel valve and purges an evaporative fuel to the intake pipe.

Control device that stops fuel injection to an engine during coasting

Provided is an engine control apparatus capable of detecting degradation in particulate filter performance. An input unit receives a first signal indicating an exhaust gas state (Tpf_) inside or downstream of a particulate filter that traps particulate substance contained in engine exhaust gas. A determination unitdetermines whether the particulate filter is degraded on the basis of the exhaust gas state (Tpf_) indicated by the first signal in a period (fFC=1) in which fuel supply to the engine is blocked.

Engine control apparatus

Provided is a system of carrying out engagement of a pinion and a ring gear at optimal timing and suppressing a bite-in sound, in a vehicle including an idle stop system. In a vehicle control device including an automatic stop unit which automatically stops an engine on the basis of an operating state of a vehicle; an automatic start unit which controls a starter during a period until the engine completely stops after the automatic stop unit executes the automatic stop of the engine, and restarts the engine; and an engine rotation detection unit which detects or operates a crank phase or a rotation number of the engine, the automatic start unit determines a control command of the starter at an interval shorter than an update interval of a signal of the engine rotation detection unit.

Onboard controller

An object of this disclosure is to provide a fuel injection device that can reliably detect an operation timing of a valve body, that is, a valve opening timing with high accuracy. The current of an electromagnetic valve reaches Iat time t, an FETand an FETare turned on, and a battery voltage VB is applied to the electromagnetic valve until time tis reached. The amount of displacement of the valve body reaches a target amount of control lift at time tbetween time tand time t, that is, a movable corecomes into contact with a fixed core. The detection of the valve opening timing is performed during the period from time tto time t

Drive device for fuel injection device

A friction stir welding structure is comprised of a first and a second member integrated into one piece by friction stir welding, and in which a thin section is formed along the friction stir weld section on at least one of either of the first and the second member.

Friction stir welding structure and power semiconductor device

Growing community of inventors

Hitachinaka, Japan

Toshio Hori