Method and device for improving the efficiency of internal combu

Details Method and device for improving the efficiency of internal combu Method and device for improving the efficiency of internal combu

1978-03-02

1980-11-11

Lazarus, Ronald H.

Internal-combustion engines

Four-cycle

Scavenging

123404, 123316, F02D 1300, F02B 2500

Patent

active

042326419

ABSTRACT:
A method for improving the efficiency of an internal combustion engine such as a Diesel engine, by ensuring, on the one hand, efficient cylinder scavenging, particularly at light engine loads and/or low speeds, and on the other hand, a reduction of the effective compression ratio resulting in temperature reduction preferably under high engine loads and/or at high speeds. Said method consists in creating, for each engine cylinder and each engine cycle, a reserve of compressed air, during the intake stage, with the intake air and in compressing it by retarding the closing of the intake valve. A non-return valve is accommodated in the intake conduit and said gas reserve is contained in the space between the intake valve and the non-return valve.

REFERENCES:
patent: 659944 (1900-10-01), Weed
patent: 949969 (1910-02-01), Brown
patent: 1467998 (1923-09-01), Brown
patent: 1869455 (1932-08-01), Zaikowsky
patent: 2202227 (1940-05-01), Noland
patent: 2292233 (1942-08-01), Lysholm
patent: 2408448 (1946-10-01), Rossman
patent: 3416502 (1968-12-01), Weiss
patent: 3919986 (1975-11-01), Goto
patent: 4084556 (1978-04-01), Villella
Philip H. Smith, "Valve Mechanisms for High-Speed Engines: Their Design and Development," Jun. 1967, p. 151, FIG. 5.4.

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