Engine control apparatus
AssigneeToyota Jidosha Kabushiki Kaisha
InventorHitoki Sugimoto
Life of this patent
Estimating the term…
Abstract
If an engine coolant temperature is equal to or lower than a first low-temperature determination value and a battery temperature is equal to or lower than a second low-temperature determination value when a request to start up an engine is made, the advancement driving of a variable valve operating mechanism is first started. Then, when an advancement amount of the variable valve operating mechanism later becomes equal to or larger than a prescribed startup start determination value, is started.
Claims4
An engine control apparatus designed to control an engine that is equipped with a motorized variable valve operating mechanism which operates by being fed with electric power from a battery to make a timing for closing an intake valve variable, and that is started up through cranking for rotating a crankshaft by external motive power, the engine control apparatus performing startup control for starting driving of the variable valve operating mechanism in such a direction as to advance the timing for closing the intake valve, prior to start of the cranking, in starting up the engine;
- and
- starting the cranking when it is confirmed that an operating amount of the variable valve operating mechanism in such a direction as to advance the timing for closing the intake valve has reached a prescribed amount, in the startup control.
An engine control apparatus designed to control an engine that is equipped with a motorized variable valve operating mechanism which operates by being fed with electric power from a battery to make a timing for closing an intake valve variable, and that is started up through cranking for rotating a crankshaft by external motive power, the engine control apparatus performing startup control for starting driving of the variable valve operating mechanism in such a direction as to advance the timing for closing the intake valve, prior to start of the cranking, in starting up the engine, wherein
- the startup control is performed on a condition that a temperature of the engine is equal to or lower than a first temperature and a temperature of the battery is equal to or lower than a second temperature when a request to start up the engine is made.
Dependencies are inferred from the claim text.