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US 9,657,612 B2Granted
Control system for electric vehicle
AssigneeToyota Jidosha Kabushiki Kaisha
InventorAkiko Nishimine
Life of this patent
Estimating the term…
Abstract
A control system for electric vehicle is provided. The control system is applied to an electric vehicle (Ve) having a motor (2, 3) and an electric oil pump (19) driven by a pumping motor (20). The control system is configured to activate the electric oil pump (19) with a predetermined duty cycle when a main switch is turned on to bring the vehicle (Ve) into a ready-on state where the vehicle (Ve) is ready to travel.
Claims6
A control system for a vehicle having a motor serving as a prime mover, and an electric oil pump driven by a pumping motor to generate hydraulic pressure and to deliver oil to a lubrication site,
- wherein the control system is configured to:
- start the electric oil pump by the pumping motor with a predetermined duty when a main switch is turned on to bring the vehicle into a ready-on state where the vehicle is ready to travel;
- determine whether the electric oil pump is required to deliver the oil to the lubrication site;
- activate the pumping motor with a first duty if the electric oil pump is required to deliver the oil to the lubrication site;
- and
- activate the pumping motor with a second duty that is smaller than the first duty if the electric oil pump is not required to deliver the oil to the lubrication site.
3 more elements
Dependencies are inferred from the claim text.