Mitsubishi Jidosha Kogyo Kabushiki Kaisha

Mitsubishi Jidosha Engineering Kabushiki Kaisha

Tetsushi Nagira

Toshihiko Oka

Satoshi Ando

Shinichi Murata

Norio Takayasu

Masanori Tokuhisa

Shuji Nagano

Masayuki Kamo

Satoshi Matsui

Koichi Yoshimoto

Kenichi Morishima

Yoshinori Sakurai

The bottom surfaceof the cylinder headis formed by an intake-side bottom surfaceand an exhaust-side bottom surfaceon which an intake portand an exhaust portare formed respectively. Further, a first wallformed between an intake-side water jacketand the intake-side bottom surfaceis larger in thickness than a second wallformed between an exhaust-side water jacketand the exhaust-side bottom surface. This structure can reduce an amount of HC included in exhaust gas.

Cylinder head structure

A valve gear for an internal combustion engine capable of promptly switching the position of a piston in a rocker arm to thereby change the engine operating condition with a satisfactory response, even in a low rotation region in which an adequate amount of oil discharged from an oil pump cannot be expected. Depending on positions of pistons slidably fitted in low-speed and high-speed cylinder portions provided in an intake driven rocker arm, a low-speed or high-speed drive rocker arm is selectively operated to press a corresponding one of the pistons. The piston in the low-speed cylinder portion switched in a low rotation region is made smaller in diameter than the piston in the high-speed cylinder portion, to be enabled to be promptly switched.

Valve gear of an internal combustion engine

A valve gear with a cylinder suspending mechanism of an internal combustion engine, whose entire valve gear mechanism is downsized by efficiently arranging the configuration of the valve gear including the cylinder suspending mechanism. A low-speed drive rocker arm and a high-speed drive rocker arm are disposed in front and at the rear of an intake driven rocker arm so that pistons of low-speed and high-speed cylinder portions arranged side by side in the intake driven rocker arm may be pressed by operating operation arm portions extending from the respective drive rocker arms, to thereby arrange the low-speed and high-speed cylinder portions and the low-speed and high-speed drive rocker arms around the intake driven rocker arm to gather in one place.

Valve gear with cylinder suspending mechanism of an internal combustion engine

A structure for a camshaft includes a cam angle detecting element arranged to face a cam angle sensor and supported in a cantilever manner by a cam journal on the outer side of the cam journal. An extension journal between the cam journal and the cam angle detecting element is enlarged toward the cam journal such that the external diameter on the side of the cam journal may be larger than the external diameter on the side of the cam angle detecting element.

Camshaft structure

Growing community of inventors

Toyota, Japan

Tetsushi Nagira