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US 4,359,020 AGranted
Preliminary heating installation for glow plugs in air-compressing internal combustion engines
AssigneeDaimler-Benz Aktiengesellschaft
InventorManfred Stotz
Life of this patent
Estimating the term…
Abstract
A preliminary heating installation for glow plugs in air-compressing internal combustion engines, in which a delay circuit is provided that enables from the beginning of the preliminary heating and for a predetermined duration a superincreased heating current by at least partially short-circuiting a series resistance; a heating spiral is selectively provided in the suction air path.
Claims4
In an air compressing internal combustion engine,
- a glow plug preheating circuit, comprising a resistor means at least in part in the intake air path of the internal combustion engine, and
- means for short-circuiting said resistor by either of two conditions,
- (a) entirely short-circuiting said resistor, and
- (b) short-circuiting a part of said resistor.
1 more element
Dependencies are inferred from the claim text.