Boots – shoes – and leggings
Patent
1995-07-27
1998-03-17
Louis-Jacques, Jacques
Boots, shoes, and leggings
36443104, 3644311, 123145A, 1231796, 12317921, 219492, 219497, 219486, G06F 1900, F02B 908
Patent
active
057294569
ABSTRACT:
The present invention relates to an improved glow plug controller. The glow plug controller includes an analog temperature sensor, circuitry for converting an analog temperature signal to digital form, a microprocessor for analyzing temperature and other operating parameters and for controlling glow plugs and monitoring indicators in accordance with algorithms defined in the microprocessor. The temperature and control signals from the microprocessor are converted to analog form and applied to actuate glow plugs and indicators in accordance with determinations made by the microprocessor. A specific embodiment includes a manual override for facilitating operation even if the microprocessor should fail. A false temperature input is provided so that a false temperature representation can be directly applied to the microprocessor for factory and service center testing of microprocessor operation. Glow plug operation is controlled by way of a relay and multiple, independently fused glow plug circuits. Diagnostic devices are provided for indicating to an operator when a glow plug short circuit has caused a fuse to open the glow plug circuit, and to indicate as well the number of such circuits which have been opened by short circuit malfunctions. Disabling devices are provided for cutting off power to the glow plugs in response to engine temperature exceeding a predetermined maximum of 88.degree. Celsius. The programmed microprocessor includes devices for establishing a preglow period as a function of engine temperature, and for initiating the afterglow in response to the cessation of cranking the engine.
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Boisvert Mario P.
Cooper Stephen R.W.
Shank David
Louis-Jacques Jacques
Nartron Corporation
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