US 2004/0107038 A1Published application

Torque controller of internal combustion engine

AssigneeDenso Corporation

InventorNaoki Osumi

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Abstract

A torque controller of an internal combustion engine provides smooth variations of target engine shaft torque in response to parameter inputs. The torque controller performs: a target engine output power operating process in which target engine output power is determined from a one-dimensional table based on the accelerator opening; a target engine output torque operating process in which target engine output torque is calculated in response to this target engine output power, by using a predetermined formula based on the number of engine revolutions; and a target engine shaft torque operating process in which an engine torque loss is subtracted from the target engine output torque to calculate the target engine shaft torque. This permits smooth variations of the target engine output torque and target engine shaft torque calculated by the formulae for improved torque control.

Claims4

Dependent claims

A torque controller for an internal combustion engine, comprising:

means for calculating target engine output power, which an internal combustion engine produces through combustion, in accordance with an amount of accelerator operation by a driver;
means for detecting a number of engine revolutions of said internal combustion engine;
means for calculating target engine output torque, which said internal combustion engine produces through combustion, based on the target engine output power calculated by said target engine output power calculating means and the number of engine revolutions detected by said rotational speed detecting means;
and
means for driving an actuator installed on said internal combustion engine based on the target engine output torque calculated by said target engine output torque calculating means, wherein
said target engine output torque calculating means calculates the target engine output torque using a predetermined formula with the target engine output power and the number of engine revolutions as parameters.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/721,077Filed 26 Nov 2003
Priority: JP 2002-34762129 Nov 2002
Published: 3 Jun 2004
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

F02D 41/1497
Introducing closed-loop corrections: with detection of the mechanical response of the engine
F02D 41/2422
Addressing techniques specially adapted therefor: selective use of one or more tables
F02D 2200/0414
Engine intake system parameters: air temperature
F02D 2200/1006
Parameters related to the engine output, e.g. engine torque or engine speed: engine torque losses, e.g. friction or pumping losses or losses…