Fuji Jukogyo Kabushiki Kaisha

Tokuichi Mizunuma

Isao Matsuno

Shinroku Momose

Hisamitsu Yamazoe

An exhaust system of an internal combustion engine comprising an ejector provided in the exhaust pipe of the engine and a compressor driven by the engine. Pipes are provided for selectively supplying compressed air to a nozzle of the ejector and to the intake pipe of the engine by operating valves. The exhaust pipe of the engine is communicated with an exhaust pressure reducing chamber of the ejector. The valves are adapted to be operated by the throttle valve of the engine and are so arranged that the compressor is communicated with the ejector in part-open throttle operation and with the intake pipe in wide-open throttle operation.

Supercharged internal combustion engine having a compressed air driven

A heat insulation construction for gasoline engines comprising a piston, a sub-piston projecting on the top of the piston. A cylinder head is secured to the top of a cylinder and has a recess into which the sub-piston may be inserted at a position near the top dead center of the piston stroke to form two independent combustion chambers. An ignition plug is provided in one of the combustion chambers in the cylinder head. An intake passage and exhaust passage are provided in the cylinder head. A heat insulating air layer is provided in the top portion of the piston and sub-piston, and a heat insulating air layer is provided on the inner wall of the cylinder head, which is formed by casting hollow structures made of steel plates in the cylinder head.

Growing community of inventors

Hachioji, Japan

Tokuichi Mizunuma