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US 11,952,939 B2Granted
Waste gate valve closing control
AssigneeToyota Jidosha Kabushiki Kaisha
InventorHiroaki Mizoguchi
Life of this patent
Estimating the term…
Abstract
The valve closing control is performed to close the waist gate valve of the turbocharger when the hydraulic fluid temperature is less than the temperature threshold. By closing the waist gate valve, the output torque is increased by increasing the amount of air taken into the engine that is idling operation, to suppress the engine stall that may occur when switching from the non-driving range to the driving range.
Claims3
A vehicle comprising:
- an engine;
- a controller configured to control the engine;
- and
- a turbocharger including:
- a compressor mounted in an intake pipe of the engine;
- a turbine mounted in an exhaust pipe of the engine;
- a bypass pipe connected to the exhaust pipe so as to bypass the turbine;
- and
- a waste gate valve mounted in the bypass pipe,
- wherein, during an idling operation of the engine, the controller executes a valve closing control configured to close the waste gate valve when a temperature of an operating oil of the engine is less than a temperature threshold, and
- wherein the controller sets the temperature threshold so as to vary inversely with atmospheric pressure.
8 more elements
Dependencies are inferred from the claim text.