GB428506A - Improved means for starting internal-combustion engines by compression-ignition - Google Patents

Abstract

428,506. Starting oil engines. L'ORANGE, P., 130, Cannstatterstrasse, Feuer. bach, Stuttgart, Germany. June 13, 1934, Nos. 17501 and 17502. Convention dates, June 17, 1933 and March 17, 1934. [Classes 7 (ii) and 7 (iii)] The starting of a cold engine by compressionignition is facilitated by increasing the pressure on the fuel jet by thermal means, which, preferably, is effected by increasing the compression ratio. In Fig. 1 a part B of the combustion chamber is closed by a valve F operated by thermal means J located in the cooling water, and in Figs. 2 and 3 a bowed plate D and a member S expand and open chambers M, Q. The surfaces forming the passage T may have staggered grooves which communicate by ducts with the chambers Q, X respectively, and the member S may be inverted and constitute a pre-combustion chamber. In Fig. 5, a part 5 expands to open a valve 6, a central part 3 being kept cool by water circulating through pipes 4, and in Fig. 6, the expansion of a bridge piece 10, anchored at its ends, lowers a precombustion chamber 9 to the position shown and provides access to an annular chamber 13. As modified in Fig. 10, a member U expands and closes ports b which are additional to the usual ports a giving communication to a pre-combustion chamber ; at starting, air, compressed in the cylinder, thus has better access to the fuel jet. In further modifications the ports b are at the lower end of the pre-combustion chamber.