Preheating of inlet air

Details Preheating of inlet air Preheating of inlet air

2006-12-05

2006-12-05

McMahon, Marguerite (Department: 3747)

Internal-combustion engines

Charge forming device

Heating of combustible mixture

Reexamination Certificate

active

07143752

ABSTRACT:
The claimed invention relates to a device for preheating of the inlet air to a combustion engine that powers a portable tool. The preheating of the air is activated when the surrounding temperature is low and deactivated when there is no need for preheating of the inlet air. When the preheating is activated is the air led through a first channel (14) that is integrated in the wall of a crankcase (10) so that the air is heated. When there is no need for preheating is the inlet air lead via a second channel (16) placed outside the crankcase (10).

REFERENCES:
patent: RE15069 (1921-03-01), Macfarren
patent: 1425054 (1922-08-01), Ricardo
patent: 4175524 (1979-11-01), Coddington
patent: 4365607 (1982-12-01), Ishikawa
patent: 4526156 (1985-07-01), Briche
patent: 4632084 (1986-12-01), Eriksson
patent: 4716860 (1988-01-01), Henriksson et al.
patent: 4846136 (1989-07-01), Phillips
patent: 4890595 (1990-01-01), Fischer
patent: 6779514 (2004-08-01), Zimmermann et al.
patent: 3523949 (1987-01-01), None
Patent Abstract of Japan, vol. 004, No. 154, Oct. 28, 1980 & JP 55104561 A, Aug. 11, 1980, abstract.

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