Engine bench system

Patent metadata

Field	Value
Publication number	US-9400231-B2
Application number	US-201414891287-A
Country	US
Kind code	B2
Filing date	Apr 21, 2014
Priority date	May 15, 2013
Publication date	Jul 26, 2016
Grant date	Jul 26, 2016

Abstract

Provided is an engine bench system capable of performing a racing test with good precision. A test body is separated into an engine main body and intermediate coupling body for connecting a crankshaft and an output shaft of the dynamometer. The engine bench system is provided with: a shaft torque sensor for detecting torsional torque; a shaft torque command generation apparatus for calculating a dynamo-side shaft torque command value by summing an engine-side shaft torque command value, and a torque value proportional to the moment of inertia of the intermediate coupling body; and a shaft torque controller for generating a torque control signal on the basis of the dynamo-side shaft torque command value and the output value of the shaft torque sensor.

First claim

The invention claimed is:

1. An engine bench system comprising:
a dynamometer having an output shaft connected to a test body;
a shaft torque detector that detects torsional torque at a coupling unit between the output shaft of the dynamometer and the test body,
the test body being divided into an engine main body and an intermediate coupling body that connects a crankshaft of the engine main body with the output shaft of the dynamometer;
a shaft torque command generation apparatus that calculates a dynamo-side torque command value corresponding to a command value for torsional torque at the shaft torque detector, by totaling an engine-side shaft torque command value corresponding to a command value for torsional torque at a coupling unit between the intermediate coupling body and the engine main body, and a torque value proportional to an inertia moment of the intermediate coupling body; and
a shaft torque controller that generates a torque control signal for the dynamometer, based on the dynamo-side shaft torque command value and an output value of the shaft torque detector.

2. The engine bench system according to claim 1 , further comprising a revolution speed detector that detects a revolution speed of the output shaft of the dynamometer,
wherein the shaft torque command generation apparatus calculates a dynamo-side shaft torque command value by totaling the engine-side shaft torque command value and a torque value obtained by multiplying an inertia moment of the intermediate coupling body by a differential value of the output of the revolution speed detector.

Assignees

• Meidensha Electric Mfg Co Ltd

Inventors

• Akiyama Takao
• Sawada Yoshimasa
• Asakura Nobuhiko

Classifications

• G01M15/02 Primary

  Details or accessories of testing apparatus · CPC title

• G01M15/044

  by monitoring power, e.g. by operating the engine with one of the ignitions interrupted; by using acceleration tests · CPC title

• G01L3/242

  by measuring and simultaneously multiplying torque and velocity · CPC title

• G01M15/04

  Testing internal-combustion engines · CPC title