Title: Piston

Abstract: A piston having an uncooled annular insert adjoining a main combustion chamber between piston and cylinder cover, combustion cavities arranged in the crown of the piston and an injection passage opening into the combustion cavities wherein, in the zones covered by the annular insert (5), laterally of the injection passage (8), outside the combustion cavities (6), the distance between the lower edge of the annular insert (5) and the crown surface of the piston (1) is increased by 0.15 to 0.7% of the piston diameter in comparison with the distance between the main surfaces of piston (1) and the cover of the cylinder (2).

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Inventors: Schlotterbeck, Manfred (Stuttgart, DE, US)

Application Number: 875955
Filing Date: 1978-02-08
Publication_date: 1980-06-17
Assignee: Mahle GmbH (DE)
Primary Class(es): 123/269 123/193.6, 123/286
Other Classes:
US Patent Ref:

2741229	Apr, 1956	Stump	123/32.
2935054	May, 1960	Franke	123/32.
3044454	Jul, 1962	Suhon	123/32.
4122805	Oct, 1978	Kingsbury et al.	123/32.

Other Refs: 520492659100

May, 1935	DK
Jun, 1978	DE

Primary Examiner: Cox, Ronald B.
Assistant Examiner:
Attorney: Drucker; William A.