Control system and control method for internal combustion engine
AssigneeToyota Jidosha Kabushiki Kaisha
InventorMakoto Ogiso
Life of this patent
Estimating the term…
Abstract
An intake air volume flowing into an intake passage is controlled by a throttle opening. When the engine speed decreases, a valve timing of an intake valve and an exhaust valve is corrected so as to increase the torque of an internal combustion engine. The throttle opening is corrected so as to increase the intake air volume when the engine speed falls below a desired speed while an intake line pressure is equal to, or less than, a predetermined pressure.
Claims21
A control system of an engine, comprising:
- a variable valve train that opens and closes at least one of an intake valve and an exhaust valve;
- an intake control mechanism that controls an intake air volume flowing into an intake passage;
- and
- a controller that:
- controls the variable valve train so as to increase a torque of the engine when the engine speed falls below a desired speed;
- and
- controls the intake control mechanism so as to increase the intake air volume when the engine speed falls below the desired speed while an intake line pressure is equal to, or less than, a predetermined pressure.
A control system of an engine, comprising:
- a variable valve train that opens and closes at least one of an intake valve and an exhaust valve;
- an intake control mechanism that controls an intake air volume flowing into an intake passage;
- and
- a controller having:
- a variable valve train control routine portion that controls the variable valve train so as to increase a torque of the engine when an engine speed falls below a desired speed;
- and
- an intake control mechanism control routine portion that controls the intake control mechanism so as to increase the intake air volume when the engine speed falls below the desired speed while an intake line pressure is equal to, or less than, a predetermined pressure.
A control method for an engine provided with a variable valve train that opens and closes at least one of an intake valve and an exhaust valve and a controller that controls an intake air volume flowing into an intake passage by the intake control mechanism, the control method comprising the steps of:
- controlling the variable valve train so as to increase a torque of the engine when the engine speed falls below a desired speed;
- and
- controlling the intake control mechanism so as to increase the intake air volume when the engine speed falls below the desired speed while an intake line pressure is equal to, or less than, a predetermined pressure.
Dependencies are inferred from the claim text.