Internal combustion engine

Details Internal combustion engine Internal combustion engine

1979-12-06

1981-10-06

Lall, P. S.

Internal-combustion engines

Accessories

Covers, trays, vibrators, corrosion inhibitors, air filters

123568, F02D 1703, F02M 2506

Patent

active

042929385

ABSTRACT:
An internal combustion engine is disclosed which includes a plurality of cylinders split into first and second groups, an intake passage provided therein with a throttle valve and bifurcated downstream of the throttle valve into first and second branches, the first branch communicating with the first group of cylinders, the second branch communicating with the second group of cylinders, and an EGR passage for recirculation of exhaust gases into the second branch. The second branch is provided therein with a stop valve and the EGR passage is provided therein with an EGR valve. Control means is provided for causing the EGR valve to open gradually after the stop valve is closed when the engine is shifted from its full cylinder mode to its split cylinder mode and for holding the stop valve open until the pressure in the second branch falls to a level equal to that in the first branch when the engine is shifted from its split cylinder mode to its full cylinder mode.

REFERENCES:
patent: 4192278 (1980-03-01), Iizuka et al.
patent: 4204514 (1980-05-01), Ishida
patent: 4231338 (1980-11-01), Sugasawa et al.
patent: 4242997 (1981-01-01), Kohama et al.
patent: 4249374 (1981-02-01), Sugasawa et al.

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