Mitsubishi Jidosha Kogyo Kabushiki Kaisha

Mitsubishi Denki Kabushiki Kaisha

Takata Corporation

Hideyuki Oda

Kenji Goto

Nobuaki Murakami

Katsunori Ueda

Takashi Kawabe

Satoshi Yoshikawa

Kyoya Igarashi

Hiromitsu Ando

Kazuyoshi Nakane

Shigeo Yamamoto

Tomohiro Ohashi

Jyun Takemura

Eiichi Hiruma

Hitoshi Kamura

Hiroki Tamura

Tateo Kume

Kazuchika Tashima

Masayuki Miyamoto

Osamu Matsumoto

Masato Yoshida

Katsuhiko Miyamoto

Tsutomu Tominaga

Muneo Nishizawa

Atsuyoshi Kojima

Kazuyoshi Yamamoto

Hiroyuki Tanaka

Tatsuya Ikegami

Katsunori Kaneko

Mikiji Watanabe

Kazuyuki Ushio

A seat belt retractor is formed of a reel for a seat belt having a rotary shaft with an end, a bearing for rotationally supporting the end of the rotary shaft, and a rotary shaft end support formed in the bearing. The end of the rotary shaft has a curved surface, and the rotary shaft end support has an opposing surface opposing the end of the rotary shaft for supporting the end of the rotary shaft. The opposing surface has a curved surface corresponding to that of the end of the rotary shaft to thereby properly support the rotary shaft without wobbling.

Seat belt retractor with shaft supporting mechanism

In order to securely prevent knocks from occurring upon starting and the like, while enhancing the compression ratio in a spark ignition type in-cylinder injection internal combustion engine which includes a fuel injection valve for directly injecting fuel into a combustion chamber, fuel is injected during a compression stroke in a specific operation region under an intermediate to high load to perform stratified combustion. Further provided is a control unit for driving and controlling the fuel injection valve such that, in the stratified combustion, prior to the fuel injection during the compression stroke, fuel is injected from the fuel injection valve during an intake stroke by such an amount that fuel fails to self-ignite.

Spark ignition type in-cylinder injection internal combustion engine

An intake system construction for an internal combustion engine includes a combustion chamber formed with upper and lower extremities thereof defined by a lower wall of a cylinder head and a top wall of a piston, an intake open end formed in the lower wall in opposition to the combustion chamber on one side of a reference plane which contains a central axis of the cylinder, an intake port formed in communication with the combustion chamber via the intake open end and extending upwardly from the intake open end so that a vertical swirl of inducted air is formed in the combustion chamber, an intake valve having a head portion for opening or closing the intake open end and a stem portion extending from the head portion to an upstream side of the intake port through the cylinder head, and a straightening member arranged in the intake port on a downstream side of the stem portion so that an inducted air flow is straightened on the downstream side of the stem portion.

Intake system construction for internal combustion engine and

A control apparatus for an in-cylinder injection type internal combustion engine includes an electronic control unit and an induction control system for changing the flow of air in the induction system of the engine. The electronic control unit selects one of fuel injection modes including a compression-stroke injection mode and an intake-stroke injection mode in accordance with the engine operating state. When the engine is operated in the compression-stroke injection mode, the electronic control unit controls the induction control system so as to enhance a stratified degree of an intake air flow generated in the combustion chamber of the engine, to thereby stabilize a combustion, especially, in the compression-stroke injection mode, whereby the fuel efficiency and the engine output are improved.

Control apparatus for an in-cylinder injection type internal combustion

Fuel feeding system for internal combustion engine

An intake system construction according to the present invention for an internal combustion engine is provided with a combustion chamber formed with upper and lower extremities thereof defined by a cylinder head and a piston, an intake open end arranged for being opened or closed by an intake valve, an exhaust open end arranged for being opened or closed by an exhaust valve, an intake port formed extending upwardly from the intake open end so that a vertical swirl of inducted air is formed in the combustion chamber, and an exhaust port for discharging combustion gas from the combustion chamber. The intake port is formed wider in one of halves thereof located adjacent a reference plane, which contains a central axis of a cylinder, than in the other half thereof located remote from the reference plane. The intake port is provided at a lower extremity thereof in the one half thereof with a raised portion for guiding an inducted air flow in the intake port toward an inner peripheral surface of a side wall of the cylinder.

A control apparatus for an in-cylinder injection type internal combustion engine includes an electronic control unit and an induction control system for changing the effective length of an intake passage of an induction system of the engine. The electronic control unit selects one of fuel injection modes including a compression-stroke injection mode and an intake-stroke injection mode in accordance with the engine operating state. When the engine is operated in a low engine-speed zone of a compression-stroke injection region, the electronic control unit controls the induction control system so as to make the effective length of the intake passage shorter than that for other engine operating region, to thereby attain a stable combustion, improved fuel efficiency and improved engine output in any fuel injection mode.

This invention relates to an in-cylinder injection internal combustion engine. A lower wall of a cylinder head, said lower wall defining an upper wall of a combustion chamber, is configured in the form of a pentroof composed of an intake-valve-side, tilted, lower wall and an exhaust-valve-side, tilted, lower wall. A spark plug is arranged in the vicinity of a top part of the pentroof-shaped upper wall of the combustion chamber. A top wall of a piston, said top wall forming a lower wall of the combustion chamber, is configured in the form of a pentroof having an intake-valve-side, tilted, top wall and an exhaust-valve-side, tilted, top wall formed so that they correspond the intake-valve-side, tilted, lower wall and the exhaust-valve-side, tilted, lower wall of the cylinder head. A recessed portion is arranged in the intake-valve-side, tilted, top wall in the top wall of the piston.

In-cylinder injection internal combustion engine

Fuel injection control system for in-cylinder injection internal

In a swash plate type axial piston pump, a swash plate 23 is fixed and supported in a cabinet while being inclined with respect to the center axial line of a rotary shaft 3. A cylinder block 15 having a plurality of cylinders 13 is attached to the rotary shaft 3 so that the cylinder block 15 slides of the rotary shaft 3 in the axial direction thereof and is rotated integrally therewith. Each one end of a plurality of pistons 21 is slidingly engaged with the cylinder 13 and the other end thereof is abutted against the swash plate 23 through a shoe 25. A valve plate 31 having a suction port 33 and a discharge port 35 is disposed so as to be abutted against the inner surface of the cabinet 1 and the bottom the cylinder block 15 so that a suction path 39 and a discharge path 41 in the cabinet 1 are selectively communicated with a pump chamber 14 in each cylinder through the suction port 33 and the discharge port 35. An operating oil is supplied to the sliding portion between the valve plate 31 and the bottom of the cylinder block 15 by a lubrication means. With this arrangement, since the operating oil is positively supplied to the sliding portion being rotated of the swash plate type axial piston pump, the sliding portion is sufficiently lubricated even if the pump is started to thereby prevent the dry state of the pump.

Swash plate type axial piston pump including lubrication mechanism, and

An internal combustion engine includes a cylinder head having a pair of upright intake ports formed therein on opposite sides of a plug hole extending along a cylinder axis, and each intake port has an upstream-side upright part extending from the top face of the cylinder head along the cylinder axis and a downstream-side slanting part having an intake opening communicating with a combustion chamber on one side of an imaginary plane containing the cylinder axis. An upper opening of each intake port opening in the top face of the cylinder head has a peripheral edge extending along the peripheral edge of an upper opening of the plug hole, and the peripheral edge of the upstream-side upright part extends along the outer surface of a lash adjuster. When viewed in vertical section along the imaginary plane, the upstream-side upright part extends obliquely downward from the top face of the cylinder head in a direction away from the lash adjuster, and the downstream-side slanting part approaches the plug hole with decrease in distance to the combustion chamber and then extends parallel to the plug hole. The downstream-side slanting part, when viewed in vertical section perpendicular to the imaginary plane, extends away from the cylinder axis with decrease in distance to the intake opening. With the intake ports having the above overall shape and sectional shape, each intake port can be given a required cross-sectional area without increasing the dimensions of the engine, and makes it possible to form a proper intake air flow inside the combustion chamber.

Internal combustion engine

This invention relates to a control system and method for an in-cylinder injection internal combustion engine, which perform control of the timing of fuel injection, the timing of ignition and an EGR rate to assure the stability of combustion in the engine and also its exhaust gas cleaning performance while promoting an improvement in gas mileage by performing injection in compression strokes. The system is provided with a fuel injection valve for directly injecting fuel into a combustion chamber, a spark plug arranged in the combustion chamber, an EGR valve arranged in an EGR passage, a fuel injection timing control unit for controlling a fuel injection timing of the fuel injection valve on a basis of a preset target fuel injection timing, an ignition timing control unit for controlling an ignition timing of the spark plug on a basis of a preset target ignition timing, an exhaust gas recirculation rate control unit for controlling an opening of the EGR valve on a basis of a preset target EGR rate, and a misfire determination unit for detecting a burning fluctuation, whereby upon detection of a burning fluctuation, the target fuel injection timing, the target ignition timing and the target EGR rate are retarded or decreased.

Control system and method for in-cylinder injection internal combustion

A fuel feeding system is provided for an internal combustion engine to permit appropriate feeding of fuel in accordance with the state of operation of the engine. A fuel line is arranged as a recirculation circuit between a fuel injector and a fuel tank. A low-pressure fuel pump is arranged in an upstream part of the fuel line. A high-pressure fuel pump is arranged between the fuel pump and the injector. A high-pressure regulator is arranged in a fuel line portion on a downstream side of the regulator to control the pressure of fuel delivered from the pump. A bypass line connects another fuel line portion on an upstream side of the regulator and the fuel line portion each other. A switching valve is arranged in the bypass line to open or close the same. A low-pressure regulator controls the pressure of fuel in the fuel line portion at a pressure lower than a control pressure set by the regulator while the switching valve is open. ECU is arranged to perform open/close control of the switching valve so that the switching valve is closed in an ordinary operation state of the engine but is opened in a specific operation state of the engine.

Growing community of inventors

Kyoto, Japan

Hideyuki Oda