Warming-up promoting apparatus of internal combustion engine

Details Warming-up promoting apparatus of internal combustion engine Warming-up promoting apparatus of internal combustion engine

1993-07-02

1994-04-12

Cross, E. Rollins

Internal-combustion engines

Lubricators

Crankcase, pressure control

123195C, 1231425R, 184 622, 184106, F02F 700, F02N 1702

Patent

active

053016424

ABSTRACT:
An oil pan is provided with a partition member so as to be divided into a main chamber and an antechamber. A vertical wall of the partition member is provided at a lower region thereof with first holes adjacent to an opening of a draft tube of an oil pump and at an upper region thereof with second holes in the vicinity of an oil level. In a state of warming up following the starting, since the oil temperature is low and the viscosity of the oil is large, the oil in the antechamber cannot pass through the first holes. Accordingly, only the oil in the main chamber a quantity of which is small is circulated through the engine by the oil pump, thereby warming up the engine quickly. Low temperature oil in the antechamber is interchanged with the oil in the main chamber little by little through the second holes, so that the temperature thereof is raised gradually. When the viscosity of the oil is decreased as rising of the temperature of the oil, the oil in the antechamber is circulated through the engine by the oil pump in due course.

REFERENCES:
patent: 4134380 (1979-01-01), Niwa et al.
patent: 4258679 (1981-03-01), Leitermann
patent: 4296716 (1981-10-01), Hofbauer et al.
patent: 4616609 (1986-10-01), Munch et al.

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