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PISTON CROWN HAVING CONICAL VALVE SEAT AND METHOD FOR MANUFACTURING A PISTON CROWN HAVING A CONICALLY SHAPED VALVE SEAT
PISTON CROWN HAVING CONICAL VALVE SEAT AND METHOD FOR MANUFACTURING A PISTON CROWN HAVING A CONICALLY SHAPED VALVE SEAT
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机译:具有圆锥形阀座的活塞形冠和制造具有圆锥形阀座的活塞形冠的方法
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摘要
A piston has a piston crown and a top land extending circumferentially around the piston crown, as well as a combustion bowl and at least one valve pocket machined therein. The valve pocket has a side wall and a bottom, and wherein the side wall extends at an angle of between 110° and 120° from the bottom. A method for forming such valve pockets in the piston crown includes machining the valve pockets with a rotating cutter having an inverted frustoconical shape such that an angle between a bottom of the cutter and a side wall of the cutter amounts to between 110° and 120°.
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