Circulating coolant fluid in hybrid electrical propulsion systems
AssigneePratt & Whitney Canada Corp.
InventorsJean Dubreuil, Eric LaTulipe
Life of this patent
Estimating the term…
Abstract
A hybrid propulsion system includes a heat engine configured to drive a heat engine shaft. An electric motor configured to drive a motor shaft. A transmission system is connected to receive rotational input power from each of the heat engine shaft and the motor shaft and to convert the rotation input power to output power. A first lubrication/coolant system is connected for circulating a first lubricant/coolant fluid through the heat engine. A second lubricant/coolant system in fluid isolation from the first lubrication/coolant system is connected for circulating a second lubricant/coolant fluid through the electric motor.
Claims21
A hybrid propulsion system comprising:
- a heat engine configured to drive a heat engine shaft;
- an electric motor configured to drive a motor shaft;
- a transmission system connected to receive rotational input power from each of the heat engine shaft and the motor shaft and to convert the rotation input power to output power;
- a first lubrication/coolant system connected for circulating a first lubricant/coolant fluid through the heat engine;
- a second lubricant/coolant system in fluid isolation from the first lubrication/coolant system, wherein the second lubricant/coolant system is connected for circulating a second lubricant/coolant fluid through the electric motor;
- and
- a third coolant system connected for circulating a third coolant fluid through the heat engine, wherein the third coolant system is in fluid isolation from the first and second lubrication/coolant systems.
Dependencies are inferred from the claim text.