Oil return pump oil level control system and method

Abstract

The invention relates to a hybrid vehicle comprising a hybrid module, a gearbox and a torque converter. The lubrication system associated with the torque converter includes an oil pump within the torque converter housing, which is intended to be controlled as a "dry" sump oil lubrication system. There is an oil pump in communication with the tank to control the oil level of the tank. Oil foaming can be detected by monitoring the operating parameters (pressure, torque or current) of the oil pump motor.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Patent Application 61 / 440878, filed February 9, 2011, which is hereby incorporated by reference. Background technique [0003] With increasing concerns about global climate change and fuel supply, there has recently been a tendency to develop various hybrid systems for motor vehicles. While various hybrid systems have been proposed, such systems typically require significant modifications to the vehicle's driveline. These changes make it difficult to retrofit the systems of existing vehicles. Furthermore, some of these systems have a tendency to cause significant power loss, which in turn hurts the vehicle's fuel economy. Therefore, improvements are needed in this area. [0004] One area of ​​improvement is the construction and setup of the hydraulic system. Hybrid vehicles, and particularly the hybrid modules associated with such vehicles, have various lubrication and cooling ...

AI Technical Summary

Problems solved by technology

This is the result of insufficient or insufficient oil return

A related concern is the cost of money and energy associated with maintaining the oil level sensor in the tank

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