초록 ▼

An auxiliary heater controller is provided for use with a liquid cooled engine which includes two fluid circuits. The first fluid circuit includes the engine, a heat exchanger with an air flow creating fan, a heater and a pump, while the second fluid circuit shunts the engine and includes only the h

An auxiliary heater controller is provided for use with a liquid cooled engine which includes two fluid circuits. The first fluid circuit includes the engine, a heat exchanger with an air flow creating fan, a heater and a pump, while the second fluid circuit shunts the engine and includes only the heat exchanger, heater and the pump. A single two-way valve operates to direct fluid to either the first or the second fluid circuit, and a timer unit is provided which operates automatically at a preset time to cause fluid to flow in the first fluid circuit for a predetermined time period. The air flow creating fan is operated by a thermostat at low speed when the engine is not operating and is operated by a manually controlled variable speed control unit when the engine is operating.

대표청구항 ▼

An auxiliary heater controller for use with a liquid cooled engine comprising a first fluid circuit including said engine, a heat exchanger means, an electrically operated heater means and an electrically operated pump means, said first fluid circuit extending from said engine through a series combi

An auxiliary heater controller for use with a liquid cooled engine comprising a first fluid circuit including said engine, a heat exchanger means, an electrically operated heater means and an electrically operated pump means, said first fluid circuit extending from said engine through a series combination including said heater means, pump means and heat exchanger means back to said engine, two-way valve means directly connected to said engine to receive fluid which has passed through said heat exchanger means, said heater means, and said pump means, said two-way valve means being formed by a single electrically operated solenoid valve, and a fluid bypass line extending from said two-way valve means around said engine to form a second fluid circuit, said second fluid circuit including said heat exchanger means, heater means and pump means, the two-way valve means being operative to direct fluid to flow in either said first or said second fluid circuit, and control circuit means connected to a power source for selectively providing power to said pump means, heater means and two-way valve means, said control circuit means including timer means connected to selectively open or close a power circuit between said power source, said heater means and said pump means and, upon closing said power circuit, to cause said two-way valve means to permit fluid flow in said second fluid circuit, said timer means having the capability of being preset to close said power circuit at a first time and to open said power circuit at a second time subsequent to said first time to cause said two-way valve means to switch fluid flow to said first fluid circuit.