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US 6,616,059 B2Granted
Hybrid vehicle powertrain thermal management system and method for cabin heating and engine warm up
AssigneeVisteon Global Technologies, Inc.
InventorsPeri Sabhapathy, Zheng Lou
Life of this patent
Estimating the term…
Abstract
A powertrain thermal management system for a hybrid vehicle having provisions for passenger cabin heating and engine warm up.
Claims20
A powertrain thermal management system for a hybrid vehicle comprising:
- a first cooling circuit having a first pump for circulating a coolant therein for removal of heat from a first heat source, said first heat source including at least one of an electric motor, a transmission heat exchanger, and an electronics cold plate;
- a second cooling circuit having a second pump for circulating a coolant therein for removal of heat from a second heat source;
- a heater core for providing heat to a passenger cabin of the hybrid vehicle;
- and
- valve means in fluid communication with said first cooling circuit, said second cooling circuit, and said heater core, said valve means selectively routing coolant from at least one of said first cooling circuit and said second cooling circuit to said heater core.
2 more elements
A hybrid electric vehicle comprising:
- an internal combustion engine for selectively imparting motion to the vehicle;
- an electric motor for selectively imparting motion to the vehicle;
- and
- a powertrain thermal management system further comprising:
- a first cooling circuit having a first pump for circulating a coolant therein for removal of heat from a first heat source, said first heat source including at least one of the electric motor, a transmission heat exchanger, and an electronics cold plate;
- a second cooling circuit having a second pump for circulating a coolant therein for removal of heat from a second heat source, the second heating source including at least the internal combustion engine;
- a heater core for providing heat to a passenger cabin of the electric hybrid vehicle;
- and
- valve means in fluid communication with said first cooling circuit, said second cooling circuit, and said heater core, said valve means selectively routing coolant from at least one of said first cooling circuit and said second cooling circuit to said heater core.
6 more elements
A method of heating a passenger cabin with a powertrain thermal management system in a hybrid vehicle comprising the steps of:
- providing a first cooling circuit having a first pump for circulating a coolant therein for removal of heat from a first heat source, the first heat source including at least one of an electric motor, a transmission heat exchanger, and an electronics cold plate;
- providing a second cooling circuit having a second pump for circulating a coolant therein for removal of heat from a second heat source;
- providing a heater core for supplying heat to a passenger cabin of the hybrid vehicle;
- and
- selectively routing coolant from at least one of the first cooling circuit and the second cooling circuit to the heater core;
- removing the heat from the coolant routed to the heater core from the at least one of the first cooling circuit and the second cooling circuit in the heating core and supplying the heat to at least one of an internal combustion engine and the passenger cabin of the hybrid vehicle.
3 more elements
Dependencies are inferred from the claim text.