Internal-combustion engines – Charge forming device – With fuel pump
Patent
1993-08-20
1996-01-23
Miller, Carl S.
Internal-combustion engines
Charge forming device
With fuel pump
123357, F02M 3704
Patent
active
054858224
ABSTRACT:
A diesel engine has a fuel injection nozzle to which pressurized fuel is supplied from a pump. The nozzle has a pressure sensor detecting the fuel pressure and a lift sensor sensing a lift magnitude of a needle valve. An electronic control unit (ECU) computes a variation ratio of the fuel pressure value which is measured by the pressure sensor. The ECU computes a non-increasing point in an increasing part of variation ratio and judge the point to be a timing for starting the fuel injection of the nozzle. The EPU also computes the actual fuel injection amount in accordance with the fuel injection timing as well as the fuel pressure and the lift amount of the needle valve both at the various points. The EPU control the actual injection amount to be identical to a target fuel injection amount.
REFERENCES:
patent: 4337650 (1992-07-01), Brandt
patent: 4462368 (1984-07-01), Funada
patent: 4475507 (1984-10-01), Miyaki
patent: 4502438 (1985-02-01), Yasuhara
patent: 4503820 (1985-03-01), Nakagawa
patent: 4597369 (1986-07-01), Yasuhara
patent: 4736726 (1988-04-01), Matsuno
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Hirose Katsuhiko
Iwahashi Kazuhiro
Kamoshita Shinji
Nakamura Norihiko
Sato Takeshi
Miller Carl S.
Toyota Jidosha & Kabushiki Kaisha
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