Controller and internal combustion engine system

Patent metadata

Field	Value
Publication number	US-2017191460-A1
Application number	US-201615371096-A
Country	US
Kind code	A1
Filing date	Dec 6, 2016
Priority date	Jan 6, 2016
Publication date	Jul 6, 2017
Grant date	—

Abstract

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.

First claim

What is claimed is:

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 engine 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 . 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.

5 . The controller according to claim 4 , 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.

6 . The controller according to claim 5 , wherein
after the shift-up by the automatic transmission, the electric motor rotationally drives the compressor to assist the supercharging operation by the compressor.

7 . 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.

Assignees

• Honda Motor Co Ltd

Inventors

• Ueno Masaki
• Nagashima Masaaki
• Hironobu Hidekazu

Classifications

• F02D41/0007

  for control of turbo-charged or super-charged engines (control of the pumps per se F02B37/12) · CPC title

• F02P5/045 Primary

  combined with electronic control of other engine functions, e.g. fuel injection (in general F02D37/02) · CPC title

• F02B2037/122

  Control of rotational speed of the pump · CPC title

• F02B37/10

  at least one pump being alternatively {or simultaneously} driven by exhaust and other drive, {e.g. by pressurised fluid from a reservoir or an engine-driven pump} · CPC title

• F02D23/00

  Controlling engines characterised by their being supercharged · CPC title