Valve-controlled compression-ignition engine

Details Valve-controlled compression-ignition engine Valve-controlled compression-ignition engine

1987-12-07

1988-10-25

Nelli, Raymond A.

Internal-combustion engines

Precombustion and main combustion chambers in series

Having combustible mixture forming means

123263, 123279, F02B 1908

Patent

active

047795875

ABSTRACT:
In a valve-controlled compression-ignition engine with direct fuel injection and an intake passage inducing the inflowing air to rotate around the cylinder axis, an ideal combustion system has been found, combining the advantages of a diesel engine with direct fuel injection and an open combustion recess and those of a diesel engine with a pre-combustion or swirl chamber, while eliminating the main disadvantages of these two basic types. According to the proposals put forward by this invention the restricted passage or throat in the center area of the combustion chamber is bounded by means of a rotationally symmetric center part, whose lower end forms part of the toroidal combustion chamber, and whose top remains slightly below the fuel jet at the upper dead center of the piston, and which constitutes the inner boundary of the narrow ring-shaped scavenge passage leading from the combustion recess to the cylindrical throat, or rather to the cylinder itself.

REFERENCES:
patent: 4164913 (1979-08-01), Komiyama et al.
patent: 4207843 (1980-06-01), List et al.
patent: 4221190 (1980-09-01), Komiyama et al.
patent: 4281629 (1981-08-01), List
patent: 4497309 (1985-02-01), Ivanchenko et al.
patent: 4667630 (1987-05-01), Sasaki

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