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특허 상세정보

Method for determining the rail pressure of an injector having a piezoelectrical actuator

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F02M-051/00   
미국특허분류(USC) 123/479; 123/456; 073/119.A
출원번호 US-0239585 (2003-02-27)
우선권정보 DE-0014737 (2000-03-24)
국제출원번호 PCT/DE01/00175 (2001-01-17)
국제공개번호 WO01/73282 (2001-10-04)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Kenyon & Kenyon
인용정보 피인용 횟수 : 13  인용 특허 : 10
초록

A method for determining the rail pressure of an injector including a voltage-controlled piezoelectrical actuator, the piezoelectrical actuator actuating a nozzle needle using hydraulic coupler. As a result of the pressure in the high-pressure channel, a coupler pressure is built up via the hydraulic coupler, the coupler pressure inducing a piezovoltage in the actuator. Because this voltage value is redundant with regard to the pressure value in the high-pressure channel, which is measured by a pressure sensor, the voltage value is used for monitoring th...

대표
청구항

1. A method for determining a rail pressure of an injector including a voltage-controlled piezoelectrical actuator, the method comprising the steps of: actuating a nozzle needle by using a hydraulic coupler of the voltage-controlled piezoelectrical actuator to release a quantity of a fluid that is acted upon by a rail pressure in a high-pressure channel; acting upon the voltage-controlled piezoelectrical actuator by the rail pressure via the hydraulic coupler; generating a piezovoltage in the voltage-controlled piezoelectrical actuator; and determi...

이 특허를 인용한 특허 피인용횟수: 13

  1. Shen,Yunbiao. Apparatus and method for evaluating fuel injectors. USP2007047197918.
  2. Mumford,David; Ancimer,Richard; Baker,Mike; Clapa,Damien; Wing,Richard. Common rail directly actuated fuel injection valve with a pressurized hydraulic transmission device and a method of operating same. USP2006097100577.
  3. Uchiyama,Ken. Common rail fuel injection system. USP2006127143747.
  4. Fujii,Hiroto. Fuel injection system ensuring operation in event of unusual condition. USP2007127305971.
  5. Rodriguez-Amaya, Nestor; Ruthardt, Siegfried; Rapp, Holger; Stoecklein, Wolfgang; Berghaenel, Bernd; Beier, Marco. Fuel injector. USP2016059328707.
  6. Schuricht,Scott; Sankar,Rammohan; Puckett,Daniel R.. Fuel system. USP2006037007676.
  7. Hermes, Henning; Degler, Traugott; Hempel, Andreas; Sommerer, Andreas; Nagler, Jens-Uwe; Marheineke, Marcus. Method and device for controlling a fuel metering system. USP2012098261605.
  8. Beer, Johannes. Method and device for determining a fuel pressure present at a direct injection valve. USP2015028960158.
  9. Brandt, Martin. Method and device for determining a pressure in a high-pressure accumulator. USP2014058726885.
  10. Bauer, Christian. Method for determining the fuel temperature. USP2017119829394.
  11. Dölker, Armin. Method for the open-loop control and closed-loop control of an internal combustion engine. USP2016059328689.
  12. Dölker, Armin. Method for the open-loop control and closed-loop control of an internal combustion engine. USP2014118886441.
  13. Suda, Sakae; Sato, Eiichi. Pressure sensor diagnostic method and common rail fuel injection control device. USP2014058738218.