Fuel property detection for an engine using engine speed

Details Fuel property detection for an engine using engine speed Fuel property detection for an engine using engine speed

1996-11-26

1998-01-27

Dolinar, Andrew M.

Internal-combustion engines

Charge forming device

Fuel injection system

123 1A, 73116, F02P 515, G01N 3322

Patent

active

057112720

ABSTRACT:
A fuel property, i.e., ordinary fuel, heavy fuel or mixture of both, is determined using an engine rotations. After an engine temperature exceeds 0.degree. C. and an engine attains a complete combustion, an engine speed is integrated. It is determined whether a deviation between the integrated value of the engine speed and an integrated value of a set engine speed is larger than a predetermined determination value. As a result, it can be determined whether the fuel fed to the internal combustion engine has a volatility identical to that of the ordinary fuel, so that the fuel properties can be highly accurately determined.

REFERENCES:
patent: 4942848 (1990-07-01), Terasaka
patent: 5419296 (1995-05-01), Yamaura
patent: 5615660 (1997-04-01), Iwano et al.
Patent Abstracts of Japan, vol. 16, No. 523, (M1331), Oct. 27, 1992, for JP 4-194348 (Sakata et al), Jul. 14, 1992.

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