Multi-cylinder internal combustion engine

Details Multi-cylinder internal combustion engine Multi-cylinder internal combustion engine

1984-05-02

1984-12-25

Lazarus, Ira S.

Internal-combustion engines

Accessories

Covers, trays, vibrators, corrosion inhibitors, air filters

123 9015, 123481, 123580, F02D 1306

Patent

active

044896859

ABSTRACT:
In a multi-cylinder internal combustion engine having a plurality of cylinders which are supplied with air via one common throttle valve and a control unit for regulating the number of operating cylinders which suspends the operation of an arbitrary number of cylinders by intercepting the air supply to said cylinders, it is noted at a point the output of the engine under Z.sub.1 -cylinder operation coincides with the output under Z.sub.2 -cylinder operation at the same degree of opening of the throttle valve at a given constant rate of engine rotation. Based on such a fact, the multi-cylinder internal combustion engine is made capable of shifting to and from Z.sub.1 -cylinder operation and Z.sub.2 -cylinder operation in the proximity of said point where these outputs coincide. This way, there will be no fluctuation in the output nor shock at the time of switching, and the control unit for this purpose can be made simple in construction.

REFERENCES:
patent: 4104991 (1978-08-01), Abdoo
patent: 4144863 (1979-03-01), Abdoo
patent: 4227505 (1980-10-01), Larson et al.
patent: 4263782 (1981-04-01), Matsumoto et al.

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