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Vehicle transmission with fluid pump having a recirculation circuit

A transmission and recirculation technology, applied to components with teeth, rotary piston type/oscillating piston type pump components, pumps, etc., can solve the problems of increasing the overall cost of the sealing ring, a large number of additional installation steps, etc., to reduce the temperature , the effect of reducing pollution

Inactive Publication Date: 2010-02-03
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this seal requires a large number of additional installation steps
Also, the cost of the seals adds to the overall cost of the pump

Method used

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  • Vehicle transmission with fluid pump having a recirculation circuit
  • Vehicle transmission with fluid pump having a recirculation circuit
  • Vehicle transmission with fluid pump having a recirculation circuit

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0023] see Figures 1 to 11 , shows a vehicle transmission with a fluid pump, wherein the same or corresponding parts are indicated by the same reference numerals in the various views. Specifically, see figure 1 , represents a vehicle transmission 10 mounted on an engine (not shown). The transmission is an automatic transmission and includes a torque converter 30 . The torque converter 30 is connected to (or the torque converter 30 is rotatably mounted relative to) a transmission input shaft 40 which is also at least partially covered by a transmission housing 50 . Although figure 1 The illustrated transmission 10 is an automatic transmission, but the technology encompassed by the present invention may be used with manual transmissions, continuously variable transmissions, and / or any electrically variable transmissions for hybrid or electric vehicles.

[0024] Such as figure 2 Additional transmission components shown housed at least partially within the transmission hous...

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PUM

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Abstract

The present disclosure relates to a vehicle transmission with fluid pump having a recirculation circuit. The recirculation circuit is configured to direct fluid from an outlet of the pump to an inlet during pump cycling. A method of manufacturing a fluid pump for use in a vehicle transmission is also disclosed.

Description

technical field [0001] The invention relates to a vehicle transmission. More specifically, the present invention relates to an automatic transmission having a fluid pump with a hydraulic circuit. Background technique [0002] A conventional automotive transmission includes an oil pump that supplies oil to various components within the transmission. The oil pump can be driven by the engine and / or electric motor. The transmission includes an input shaft connectable to the crankshaft of the engine. The oil pump can be indirectly driven by the engine through the transmission input shaft. [0003] Rotary lobe and gear pumps can be used with conventional automotive transmissions. The pump includes at least two meshing gears or rotors. As the gears mesh, fluid is drawn into and drawn out of the pump chamber. The rotor may become overheated during cyclic operation causing axial or radial expansion and eventually causing the pump to seize. Also, immediately after the engine is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H41/24
CPCF16H61/0025F04C14/26F04C28/06F04C2270/03F16H57/0446F04C2/10F04C15/0076Y10T29/49245
Inventor 布拉德·罗纳德·霍弗
Owner FORD GLOBAL TECH LLC