| US 7,610,799 B2 | ||
| Engine measurement device | ||
| Mitsuharu Sugita, Kitamoto (Japan) | ||
| Assigned to A&D Company, Ltd., Tokyo (Japan) | ||
| Appl. No. 11/920,114 PCT Filed May 09, 2005, PCT No. PCT/JP2005/008445 § 371(c)(1), (2), (4) Date Nov. 08, 2007, PCT Pub. No. WO2006/120728, PCT Pub. Date Nov. 16, 2006. |
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| Prior Publication US 2009/0100919 A1, Apr. 23, 2009 | ||
| Int. Cl. G01M 15/05 (2006.01) | ||
| U.S. Cl. 73—114.15 [73/114.25; 73/116.05] | 17 Claims |
| 1. An engine measurement device for measuring engine performance by bench testing an automobile engine having a load connected
to said engine, said engine measurement device comprising:
an engine control unit for controlling a fuel injection timing of said engine;
a detector for measuring time series data that include at least an engine speed of said engine and an axial torque detected
between said engine and a load in a transient state, in a state in which said engine is combustion-driven by the control of
said engine control unit;
a torque computation unit for computing an engine torque that is an actual drive force of said engine on a basis of the time
series data of said engine speed and axial torque; and
a model computation unit for modeling said engine torque using a model and engine parameters including said engine speed,
and said fuel injection timing; wherein
a fuel torque generated by the combustion driving of said engine, and a mechanical loss torque that is a difference between
said engine torque and said fuel torque are calculated from said model.
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