| 摘要 |
513,906. Oil engines. SOC. ANON. A. SAURER. March 15, 1938, No. 7981. Convention date, April 22, 1937. [Class 7 (iii)] In an oil engine air is admitted to the cylinder tangentially so as to rotate about the cylinder axis and is forced at the end of the compression stroke through an opening 9 into a toric-shape combustion chamber 7 in such manner that the centrifugal effect of the rotating air exceeds the displacement effect of the piston so that during the compression stroke the air will flow directly past the rim of the opening 9 along the wall of the chamber 7 and back towards the fuel injector 5 as a helical eddy. In Fig. 1, air is admitted through a screened valve 10 and the cross-section of the inlet passage and the velocity of the air are such as to produce the effect desired. Alternatively to predetermining the size of the inlet passage and as shown in Fig. 5, the clearance between the piston and the cylinder head is increased adjacent the opening 9 to reduce the displacement effect of the piston on the air entering the chamber 7. If preferred, the chamber 7 may be located in the cylinder head. Specification 421,101 is referred to.
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