| 摘要 |
PCT No. PCT/DE94/01375 Sec. 371 Date May 17, 1996 Sec. 102(e) Date May 17, 1996 PCT Filed Nov. 17, 1994 PCT Pub. No. WO95/15433 PCT Pub. Date Jun. 8, 1995An internal combustion engine with at least one cooling oil injector arranged in the motor housing, and at least one reciprocating piston made of light metal. The piston head has a combustion space depression and a closed, ring-shaped cooling oil channel arranged thereon. The channel has an inlet opening and at least one outlet opening. A cooling oil injector rigidly joined with the engine housing injects a free jet of oil aligned slanted relative to the axis of the piston. The ring-shaped cooling oil channel is partly filled with cooling oil in the motor operation. The inlet opening has an edge stretched out long in the circumferential direction of the piston, which ends funnel-like in the zone of the inside wall of the piston skirt. The piston can accommodate high stresses since the length of the inlet opening disposed in the circumferential direction of the ring-shaped cooling oil channel is slightly shorter than the length required to directly collect the oil jet in all piston positions.
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