Fuel injection control method using variable nozzle hole fuel in

Details Fuel injection control method using variable nozzle hole fuel in Fuel injection control method using variable nozzle hole fuel in

1997-12-16

2000-05-02

Miller, Carl S.

Internal-combustion engines

Combustion chamber means having fuel injection only

Having a particular relationship between injection and...

123497, 23953312, F02B 500

Patent

active

060559578

ABSTRACT:
A method for carrying out fuel injection using a variable nozzle hole type fuel injection nozzle and a jerk type fuel injection pump. The variable nozzle hole type fuel injection nozzle has in its tip a well formed by an enclosing wall in which are provided a number of nozzle holes (35). A rotary valve (7) rotatable by an actuator (9) is disposed in the well and has fuel passages (73) so provided in the same number as the nozzle holes (35) that the fuel passages (73) can be connected with the nozzle holes (35) to a degree which varies with the angle of the rotary valve (7). A non-injection period in the rotation of the jerk type fuel injection pump B is detected using an encoder pulse and when the jerk type fuel injection pump B is rotating at high speed the angle of the rotary valve (7) is changed in steps until the rotary valve (7) reaches a target angle (.theta.D) corresponding to a required nozzle hole area by the actuator (9) being driven a required number of times only in the non-injection period.

REFERENCES:
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patent: 5551391 (1996-09-01), Beck
patent: 5645225 (1997-07-01), Hasegawa
patent: 5743243 (1998-04-01), Yanagihara
patent: 5823161 (1998-10-01), Potz
patent: 5927612 (1999-07-01), Cooke

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