CONTROL DEVICE OF CYLINDER INJECTION TYPE INTERNAL COMBUSTION ENGINE

Japanese Patent JP3663870

B2

PROBLEM TO BE SOLVED: To facilitate wiping-out and removal of a foreign matter of a seat part of an electric control pressure regulator and to secure reliability by operat ing a means to change supply pressure of fuel by frequency different from normal operating frequency in detecting abnormality of the means to change fuel supply pressure.
SOLUTION: Fuel pressure to be supplied to an injector 13 is controlled by adjusting return fuel quantity by an electric control pressure regulator 41, and the regulator 41 is duty-controlled by retrieving a map of control fuel pressure to be decided by an engine driving condition. At this time, a cleaning mode is selected at the time of measuring fuel pressure in the middle of driving and of showing a characteristic to be appear in the case when a foreign matter is adhered on a seat part of the regulator 41 in a region lower than specified control fuel pressure. Additionally, in the case when an engine is in a fuel cutting region of deceleration, a means to change supply pressure of fuel is operated by frequency different from normal operating frequency and the foreign matter adhered on the seat part is eliminated by impact.

JP6398784

Fuel tank switchgear

Adako samurai
Toshio Hori
Koji Matsufuji

JP35719897A

June 22, 2005

December 25, 1997

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Nissan Motor Co., Ltd

F02M37/00; F02D41/02; F02D41/12; F02D41/22; F02D45/00; F02M63/00; F02M69/00; F02M69/46; (IPC1-7): F02D41/02; F02D41/12; F02D41/22; F02D45/00; F02M37/00; F02M63/00; F02M69/00; F02M69/46

JP1137005A
JP63223351A
JP59115163U
JP63143761U
JP8218973A
JP59115164U
JP5892465U
JP9119335A
JP3151506A
JP109035A
JP9268955A
JP533740A
JP6245954A
JP587270U
JP84577A
JP8177681A

Yasuo Sakuta

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