Viscous coolant heater with variable coolant pump drive
AssigneeBorgWarner Inc.
InventorsDavid B. Roth, Olaf E. Weber
Life of this patent
Estimating the term…
Abstract
A vehicle heating system having a first viscous clutch and a pump and viscous clutch mechanism. The first viscous clutch has a first clutch input member. The pump and viscous clutch mechanism has a pump and a second viscous clutch. The pump includes a pump input member, while the second viscous clutch includes a second clutch input member. One of the pump input member and the second clutch input member is drivingly coupled to a portion of the first viscous clutch.
Claims19
A vehicle heating system comprising:
- a first clutch having a first clutch input member, the first clutch being a viscous clutch;
- and
- a pump and clutch mechanism having a pump and a second clutch, the pump having a pump input member, the second clutch having a second clutch input member, wherein one of the pump input member and the second clutch input member is drivingly coupled to a portion of the first clutch.
A vehicle heating system comprising an assembly with a single input shaft, a variable speed coolant pump and a heater, the single input shaft providing rotary power directly to at least one of the variable speed coolant pump and the heater, the heater being a first rotary device that is configured to generate shear forces in a first viscous fluid to generate heat, the variable speed pump being configured to produce a first flow of a coolant that is circulated through the first rotary device, wherein the variable speed coolant pump and the heater are drivingly coupled such that all rotary power input to the assembly for driving both the variable speed coolant pump and the heater is transmitted solely through the single input shaft.
Dependencies are inferred from the claim text.