Hitachi, Ltd.

Hitachi Automotive Engineering Co., Ltd.

Ryoichi Komuro

Minoru Ohsuga

Junichi Yamaguchi

Masakichi Momono

Jun'ichi Yamaguchi

Takuya Shiraishi

Toshimichi Minowa

Hiroshi Fujii

Yasushi Sasaki

Kozo Nakamura

Yoshinori Endo

Hiroshi Takenaga

Tokuji Yoshikawa

Mitsuru Nakamura

Teruhiko Minegishi

Hiroto Morizane

In an injector having three concentrated fuel spray bands, one of the fuel spray bands is directed to an spark plug, and the others are directed to curved grooves on a piston. The sprays that enter each groove advance along each groove, mutually collide substantially under the spark plug, and are ascended. Further, these spray bands are carried to the vicinity of the spark plug by a tumble flow and stable stratified air-fuel mixture is formed. As described above, stable and satisfactory stratified combustion can be made.

Direct-injection engine, method of controlling the same, piston used in the same and fuel injection valve used in the same

An injector having three concentrated fuel spray bands is used, one of the fuel spray bands is directed to an spark plug, and the others are directed to curved grooves on a piston. The sprays that enter each groove advance along each groove, mutually collide substantially under the spark plug, and are ascended. Further, these spray bands are carried to the vicinity of the spark plug by a tumble flow and stable stratified air-fuel mixture is formed. As described above, stable and satisfactory stratified combustion can be made.

A method comprising a first traveling mode in which the traveling environment ahead is recognized and at least one of the engine, the speed change gear, and the brake is controlled on the basis of a signal representing the recognition and a second traveling mode in which at least one of the engine, the speed change gear, and the brake is controlled on the basis of a signal generated by operation of the driver, in which the second traveling mode is selected in an area where vehicle following-up control is difficult.

Vehicle, and apparatus for and method of controlling traveling of the vehicle

A control device in an internal combustion engine interlocking with a device to generate swirls in a combustion chamber of the internal combustion engine by providing bypass passages which allow air to bypass a throttle valve for regulating intake air flow rate of the internal combustion engine to control an output power of the internal combustion engine and allow the air to flow in from the atmosphere side to communicate with air intake ports for respective cylinders on the downstream side of the throttle valve.

Control device and device for generating swirls in internal combustion engine

Vehicle and device and method for controlling running of the same

An improved intake equipment, in which the formation of a liquid fuel film due to deflection of the fuel can be avoided, has a plurality of independent air intake pipes connected to a combustion chamber, for introducing air thereto, collectors connected to the independent air intake pipes, for distributing the introduced air into them, and a throttle valve connected to the collectors, for controlling the amount of air flow. A fuel supplying mechanism is provided on a wall of the independent intake pipes, for supplying fuel to the air and mixing the air and fuel, and a deflection mechanism is provided for deflecting the air flow of the independent intake pipes so as to avoid undersirable deflective of the fuel.

Air intake equipment for internal combustion engine

An air intake system for an internal combustion engine uniformly distributes the fuel-air mixture in the cylinder, and concentrates the mixture in the vicinity of an ignition plug in the cylinder by selecting the direction of supply of sprayed fuel, thereby improving ignitability of the mixture at the time of lean-burn operation. The system produces tumble flow in the cylinder for accelerating combustion and provides lean-burn operation, thereby suppressing consumption of the fuel and reducing the amount of exhaust gas. The fuel is injected by a fuel injection valve and collides with an intake valve, before being atomized. The atomized fuel flows into the cylinder from the side of the intake valve closer to the fuel injection valve. On the other hand, high-velocity air flow from bypass passages enters the cylinder from the side of the intake valve closer to the ignition plug, so as to produce tumble flow in the cylinder.

Intake system for internal combustion engine

An intake pipe for an internal combustion engine has an intake assembly to which the air supplied from an air cleaner flows in accordance with the opening of a throttle valve, and independent intake pipes receive the air in the intake assembly and distribute the air into each cylinder of the internal combustion engine. The intake passage between the air cleaner and the throttle valve assembly is arranged next to and separated by a partition wall from at least one of a negative pressure part of the intake passage downstream of the throttle vale, the intake assembly provided in the negative pressure part and the independent intake pipes, whereby two independent intake spaces are formed on either side of the partition wall.

Intake pipe for internal combustion engine

A control device in an internal combustion engine, interlocking with a device to generate swirls in a combustion chamber of the internal combustion engine by providing bypass passages which allow air to bypass a throttle valve for regulating intake air flow rate of the internal combustion engine to control an output power of the internal combustion engine and allow the air to flow in from the side of atmosphere to communicate with air intake ports for respective cylinders on the downstream side of the throttle valve. The device comprises sensors to detect a vehicle speed, a gear position, an opening of an accelerator, an intake air flow rate and the like and a processor to determine an operating state of the internal combustion engine such as a rotating speed, a torque and the like based on the signals from the sensors, calculating an operating condition of the internal combustion engine according to the strength of swirl to be generated based on the operating state, outputting the calculated values as control signals.

Control device and apparatus for generating swirls in internal

An improved intake equipment, in which the formation of a liquid fuel film due to deflection of the fuel can be avoided, has a plurality of independent air intake pipes connected to a combustion chamber, for introducing air thereto, collectors connected to the independent air intake pipes, for distributing the introduced air into them, and a throttle valve connected to the collectors, for controlling the amount of air flow. A fuel supplying mechanism is provided on a wall of the independent intake pipes, for supplying fuel to the air and mixing the air and fuel, and a deflection mechanism is provided for deflecting the air flow of the independent intake pipes so as to avoid undesirable deflection of the fuel.

An air intake system for an internal combustion engine distributes the fuel-air mixture in the cylinder, and concentrates the mixture in the vicinity of an ignition plug in the cylinder by selecting the direction of supply of sprayed fuel, thereby improving ignitability of the mixture at the time of lean-burn operation. The system produces tumble flow in the cylinder for accelerating combustion and provides lean-burn operation, thereby suppressing consumption of the fuel and reducing the amount of exhaust gas. The fuel is injected by a fuel injection valve and collides with an intake valve, before being atomized. The atomized fuel flows into the cylinder from the side of the intake valve closer to the fuel injection valve. On the other hand, high-velocity air flow from bypass passages enters the cylinder from the side of the intake valve closer to the ignition plug, so as to produce tumble flow in the cylinder.

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Hitachi, Japan

Ryoichi Komuro