Tohatsu Corporation

Brunswick Corporation

Tamotsu Hamanaka

Richard A Davis

An internal combustion engine includes a cylinder block journaling a crankshaft driven to rotate by a reciprocal piston, and a cylinder head having intake and exhaust passages for delivering a combustible fuel-air mixture to drive the piston and for exhausting the combustion products thereof, respectively. The cylinder block and the cylinder head are a single unitary monoblock member without opposing machined surfaces and a head gasket therebetween.

Monoblock internal combustion engine

A two-cycle internal combustion engine capable of improving its output and a rate of feed consumption. In the engine, an ignition plug is so disposed that its tip end is arranged in a top chamber and positioned on a vertical plane extending through the top chamber and a partition is provided in a region of the top chamber apart from the ignition plug in a manner to extend substantially along the vertical plane from one end of the top chamber by a distance toward the ignition plug, to thereby divide the region into two compartments. The partition cooperates with the top chamber to form corners to both sides of the one end of the top chamber with the partition being interposed therebetween so that they may serve to direct fuel gas supplied to the top chamber toward the ignition plug.

Growing community of inventors

Saitama, Japan

Tamotsu Hamanaka