Heating system for engine
AssigneeCaterpillar Inc.
InventorsJoseph Kennedy, Lee Kress
Life of this patent
Estimating the term…
Abstract
A heating system for an engine includes a heater and a heat exchanger. The heater increases the temperature of an engine coolant and circulates the engine coolant into the heat exchanger. The heat exchanger is located with an oil pan. The heat exchanger received the heated engine coolant and transfers heat from the engine coolant into engine lubricant in the oil pan. The engine coolant flows from the heat exchanger into an engine block of the engine. The engine coolant transfers heat to the engine block and flows back to the heater to be heated again.
Claims20
A heating system for use with an engine , the engine having an oil pan and an engine block, the engine block having an engine block inlet and an engine block outlet, the heating system comprising:
- a heater disposed outside of the engine block and the oil pan, in fluid communication with the engine block, having
- a heater inlet, and
- a heater outlet in fluid communication with the heater inlet;
- a heat exchanger disposed within the oil pan and having
- a heat exchanger inlet, and
- a heat exchanger outlet in fluid communication with the heat exchanger inlet;
- a heater to heat exchanger fluid path that extends from the heater outlet into the oil pan and to the heat exchanger inlet;
- a heat exchanger to engine block fluid path extending from the heat exchanger outlet, through the oil pan, and to the engine block inlet;
- and
- an engine block to heater fluid path extending from the engine block outlet to the heater inlet.
A heating system for use with an engine and an oil pan, the engine having an engine block, the engine block having an engine block inlet and an engine block outlet with a jacket water passages there between, the heating system comprising:
- a heater disposed outside of the engine block and the oil pan, in fluid communication with the engine block, having
- a heater inlet, and
- a heater outlet in fluid communication with the heater inlet;
- a heat exchanger disposed within the oil pan and having
- a heat exchanger inlet, and
- a heat exchanger outlet in fluid communication with the heat exchanger inlet;
- and
- an engine coolant circuit for providing a path for engine coolant through the heater, heat exchanger, and the engine block passages.
An engine and a heating system for use in a machine, the engine and the heating system comprising:
- an engine block having
- a jacket water passage inlet, and
- a jacket water passage outlet in fluid communication with the jacket water passage inlet;
- an oil pan having
- engine lubricant, and
- a heat exchanger in fluid communication with the heater and the jacket water passage inlet;
- a heater disposed outside of the engine block and oil pan in fluid communication with the jacket water passage outlet;
- and
- engine coolant disposed with the oil pan, engine block, and heater.
Dependencies are inferred from the claim text.