Mitsubishi Jidosha Kogyo Kabushiki Kaisha

Kiyotaka Hosono

Katsuhiko Miyamoto

Kazumasa Iida

Takashi Kawabe

Fumiaki Hiraishi

Yu Yokoyama

Takeshi Hasegawa

Hideki Miyamoto

Yoshiyuki Hoshiba

Mitsuru Kishimoto

Takafumi Shigemori

Tomoharu Sakai

Toshiaki Umemura

A control unit for an internal combustion engine includes a load detector to detect a load on the engine, an injection volume calculator to calculate a cylinder injection volume indicating a volume of fuel injected from a direct injector, a first controller to perform a first control for increasing the frequency of the injection by the direct injector upon a reduction in the cylinder injection volume, a second controller to perform a second control for increasing a port injection volume indicating a volume of fuel injected from a port injector upon a reduction in the cylinder injection volume, and a switching controller to switch between the first control with the first controller and the second control with the second controller depending on the load.

Control unit for internal combustion engine

There is provided a combustion chamber structure in an internal combustion engine in which, at a peripheral portion of a combustion chamber, a gap between a cylinder head lower face and a piston upper face is small in intake-to-intake and exhaust-to-exhaust zones and gradually increases toward an intake-to-exhaust zone. According to such design, the mixture in the peripheral portion of the combustion chamber can smoothly flow from the intake-to-intake and exhaust-to-exhaust zones to the intake-to-exhaust zone along the peripheral face of the cylinder. The flow of air-fuel mixture from the intake-to-intake zone collides at the center of the intake-to-exhaust zone with the flow of mixture from the exhaust-to-exhaust zone, and the combined flow goes over a conical tapered portion in the upper face of the piston and vigorously enters a central recessed portion thereof. Therefore, it is possible to satisfactorily mix an air-fuel mixture with a simplified configuration.

Combustion chamber structure in an internal combustion engine

Automotive vehicle engine with cylinder suspending mechanism for

Growing community of inventors

Tokyo, Japan

Kiyotaka Hosono