| 摘要 |
397,840. Direct-injection engines' BENDIX AVIATION CORPORATION, 105, West Adams Street, Chicago, U.S.A. Jan. 25, 1932, No. 2227. Convention date, Jan. 26, 1931. [Class 7 (iii).] In an engine in which the air charge is forced from the cylinder into a combustion chamber to produce turbulence, a sparking-plug 16, Fig. 2, is located in a recess 17 in the combustion chamber 5 and is shielded from the entering air by a projecting ledge 22, Fig. 1. The piston 1 has an extension 14 which enters the combustion chamber 5, and the upper surfaces of the piston and the chamber 5 are shaped to produce a toroidal combustion chamber. An exhaust valve 11 is located in the chamber 5, and inlet valves 9 open into an annular space below the cylinder head 10. In modified constructions, (1) the inlet and exhaust valves are both arranged in a combustion chamber which is rectangular in cross section, and (2) the piston extension, Fig. 5, is constructed in two parts of different diameters 19, 20 spiral grooves being formed on its periphery. The Specification as open to inspection under Sect. 91 also describes a modification, Fig. 7 (Cancelled), from which an igniter is omitted, and in which the combustion chamber 32 has walls extending into the cylinder, to co-operate with a recess in the piston 18. It also states that the invention relates to compressionignition engines with or without glow-plugs. This subject-matter does not appear in the Specification as accepted.
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