Two-stroke engine piston bowl configurations

摘要

PCT No. PCT/US97/04442 Sec. 371 Date Nov. 19, 1997 Sec. 102(e) Date Nov. 19, 1997 PCT Filed Mar. 19, 1997 PCT Pub. No. WO97/35102 PCT Pub. Date Sep. 25, 1997A piston for a direct fuel injection engine is described. The piston comprises a cylindrical skirt and a piston face. The cylindrical skirt has an axis. The piston face has a bowl. The bowl has a wall extending about an axis in inclined relation to the cylindrical skirt axis. An engine is also described. The engine comprises an engine block defining an engine cylinder and a piston moveable axially in the engine cylinder. The piston comprises a cylindrical skirt and a dome-shaped piston face, the piston face having therein a bowl. The bowl located with the cylinder axis passing therethrough. The bowl is defined by a cylindrical wall extending about an axis extending in inclined relation to the axis of the cylinder. The bowl includes a bottom wall extending perpendicularly to the bowl axis. The engine also comprises a fuel injector nozzle adapted to direct a spray of fuel toward the bowl for deflection toward a spark plug disposed on the opposite side of the cylinder axis from the fuel injector.