SCAVENGE PUMP OIL LEVEL CONTROL SYSTEM AND METHOD

摘要

A hybrid vehicle includes a hybrid module, a transmission and a torque converter. The lubrication system associated with the torque converter includes an oil sump within the torque converter housing which is intended to be managed as a “dry” sump oil lubrication system. There is an oil pump in communication with the sump in order to manage the sump oil level. By monitoring an operational parameter of the oil pump motor (pressure, torque, or current) oil aeration can be detected.

主权项

1. An oil level control system for an oil sump of a hybrid electric vehicle, said oil sump including a supply of oil with an oil level, said oil level control system comprising:
an electric oil pump constructed and arranged in fluid communication between said oil sump and an oil reservoir, said electric oil pump being constructed and arranged to pump oil from said oil sump to said oil reservoir to lower the oil level of said sump; and a controller constructed and arranged in electrical communication with said electric oil pump for controlling the operation of said electric oil pump, said controller being programmed with an acceptable oil level range for the supply in the oil sump, the oil level of said supply in said oil sump being determined based on an electric oil pump parameter, wherein the speed of said electric oil pump is varied as required to maintain the oil level of said supply in said oil sump within said acceptable oil level range.