Controller and internal combustion engine system
A controller for an internal combustion engine includes a regenerative device and at least one of ignition timing circuitry and opening degree circuitry. The ignition timing circuitry is configured to retard an ignition timing so as to decrease a torque generated by the internal combustion engine in a shift-up operation of a multi-stage automatic transmission during a supercharging operation by a supercharger. The opening degree circuitry is configured to reduce an opening degree of a throttle valve so as to decrease a torque generated by the internal combustion engine in a shift-up operation of a multi-stage automatic transmission during a supercharging operation by a supercharger. The regenerative device is coupled to a compressor or a turbine of the supercharger to regenerate rotational energy in the compressor or the turbine so as to decrease the torque in the shift-up operation during the supercharging operation.
1. A controller for an internal combustion engine including a supercharger and being connected to a multi-stage automatic transmission, the controller comprising:
a first torque suppressor and a second torque suppressor that perform a torque-down control to decrease a torque of the internal combustion engine during shift-up by the automatic transmission in a supercharging operation,
the first torque suppressor including at least one of an ignition-timing retarding controller that performs control to retard an ignition timing and a throttle-valve closing controller that performs control to reduce an opening degree of a throttle valve,
the second torque suppressor being coupled to a compressor or turbine of the supercharger and including a regenerative device that regenerates rotational energy of the coupled compressor or turbine.
2. The controller according to claim 1 , wherein
the supercharger includes an electric supercharger that rotationally drives the compressor by using an electric motor, and
the regenerative device includes the electric motor having a regenerating function.
3. The controller according to claim 2 , wherein
after the shift-up by the automatic transmission, the electric motor rotationally drives the compressor to assist the supercharging operation by the compressor.
4. The controller according to claim 1 , wherein the first torque suppressor includes both the ignition-timing retarding controller and the throttle-valve closing controller.
5. The controller according to claim 1 ,
wherein the regenerative device terminates regeneration of the rotational energy before termination of the shift-up by the automatic transmission, and
wherein the first torque suppressor terminates the torque-down control before termination of the regeneration.
6. A controller for an internal combustion engine, comprising:
at least one of ignition timing circuitry configured to retard an ignition timing and opening degree circuitry configured to reduce an opening degree of a throttle valve so as to decrease a torque generated by the internal combustion engine in a shift-up operation of a multi-stage automatic transmission during a supercharging operation by a supercharger; and
a regenerative device coupled to a compressor or a turbine of the supercharger to regenerate rotational energy in the compressor or the turbine so as to decrease the torque in the shift-up operation during the supercharging operation.
7. The controller according to claim 6 , wherein
the supercharger includes an electric supercharger that rotationally drives the compressor with an electric motor, and
the regenerative device includes the electric motor having a regenerating function.
8. The controller according to claim 7 , wherein
after the shift-up by the automatic transmission, the electric motor rotationally drives the compressor to assist the supercharging operation by the compressor.
9. The controller according to claim 6 , wherein both the ignition timing circuitry and the opening degree circuitry are provided.
10. The controller according to claim 6 ,
wherein the regenerative device terminates regeneration of the rotational energy before termination of the shift-up operation of the multi-stage automatic transmission during the supercharging operation, and
wherein the at least one of ignition timing circuitry and the opening degree circuitry stops decreasing the torque in the shift-up operation during the supercharging operation before termination of the regeneration.
11. An internal combustion engine system comprising:
an internal combustion engine;
a supercharger including a compressor and a turbine;
a multi-stage automatic transmission connected to the internal combustion engine;
at least one of ignition timing circuitry configured to retard an ignition timing and opening degree circuitry configured to reduce an opening degree of a throttle valve so as to decrease a torque generated by the internal combustion engine in a shift-up operation of a multi-stage automatic transmission during a supercharging operation by a supercharger; and
a regenerative device coupled to a compressor or a turbine of the supercharger to regenerate rotational energy in the compressor or the turbine so as to decrease the torque in the shift-up operation during the supercharging operation.
12. The internal combustion engine according to claim 11 , wherein both the ignition timing circuitry and the opening degree circuitry are provided.
13. The internal combustion engine according to claim 11 ,
wherein the regenerative device terminates regeneration of the rotational energy before termination of the shift-up operation of the multi-stage automatic transmission during the supercharging operation, and
wherein the at least one of ignition timing circuitry and the opening degree circuitry stops decreasing the torque in the shift-up operation during the supercharging operation before termination of the regeneration.