Arrangement for inlet of cooling and combustion air

Details Arrangement for inlet of cooling and combustion air Arrangement for inlet of cooling and combustion air

1986-02-10

1988-01-05

Watts, Douglas D.

Internal-combustion engines

Cooling

Automatic coolant flow control

123 4158, 123556, F01P 702

Patent

active

047168609

ABSTRACT:
The air inlet of the cooling fan is positioned substantially on top of a motor saw body so that the air is drawn from a region above the saw where the concentration of pollutants is considerably lower than at the usually known inlet through the fan cover. The air inlet is positioned at a distance from the fan cover to provide a connecting channel between the inlet and the fan wheel, in which channel a shunt damper is arranged. The shunt channel enables a balanced mixture of cold outdoor air and warm recirculating inner air so that a proper engine temperature can be effected.

REFERENCES:
patent: 3166052 (1965-01-01), Parsons
patent: 4370855 (1983-02-01), Tuggle

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