TH48121B - Fuel injector and how to judge the fault of fuel injector - Google Patents

Abstract

DC60 fuel injector with a fuel injection module that provides the function for the return movement of the pump ball by the electric flow to the solenoid, and suction and compression and fuel injection, A control unit for providing a driving signal to the fuel injection module, generator, and battery after the solenoid's drive signal is on and at a predetermined time. One has passed in the online state. The battery voltage is detected by the battery voltage detection circuit. The battery voltage is compared with a predetermined value by a condition judgment path. Battery to judge the battery condition And will show the result of that judgment in the battery indicator lamp A fuel injector with a fuel injection module that provides a function for the return movement of the pump ball by electric flow to the solenoid, and suction and compression and fuel injection, the control unit for the Provides a driving signal to the aforementioned fuel injection module, generator, and battery after the solenoid's drive signal is powered on and the preset time. One has passed in the online state. The battery voltage is detected by the battery voltage detection circuit. The battery voltage is compared to a predetermined value by a condition judgment path. Battery to judge the battery condition And will show the result of that judgment in the battery indicator lamp

Claims (8)

1. The fuel injector is assembled with The fuel injection module provides a function for the reciprocating motion of the pump by "on" and "off" the electric current to the solenoid, suction and compression. Push and fuel injection, a control unit for providing a driving signal to the aforementioned fuel injection module on The basis of engine operating conditions A generator for generating electricity by Rotation of the said engine, and the battery for storing electricity Where the battery voltage detection path and the battery condition judgment path are provided. Within the said control unit Battery voltage is detected by the aforementioned battery voltage detection path after the said solenoid's drive signal is "on" and the pre-set time. Has passed in the "on" state, the battery voltage is compared with the nominal value. In advance by judgment of the said battery condition To judge the condition of the battery and the results The judges will then be displayed in a way that shows results. 2. The fuel injector is included. The fuel injection module provides a function for the reciprocating motion of the pump by "on" and "off" the electric current to the solenoid, suction and compression. Push and fuel injection, a control unit for providing a driving signal to the aforementioned fuel injection module on The basis of engine operating conditions A generator for generating electricity by Rotation of the said engine, and the battery for storing electricity Where the solenoid current and battery condition judgment paths are Provided within the said control unit The solenoid current will be detected by the sensing path. Such solenoid current After the driver's signal The solenoid is "on" and a preset time has passed in that "on" state. It is compared with a predetermined value by way of judging such battery condition to judge. Battery condition And the result will be displayed in a way that is displayed 3. Fuel injector that are included. A fuel injection module with functions for the pump's round-trip motion by "on" and "off" the electric current to the solenoid, suction and compression. Push and fuel injection, a control unit for providing a driving signal to the aforementioned fuel injection module on The basis of engine operating conditions A generator for generating electricity by Rotation of the said engine, and the battery for storing electricity Where the battery voltage detecting path, the solenoid current sensing path and the Battery condition judgment is provided within the said control unit; The battery voltage is detected by The battery voltage detecting path after the said solenoid's drive signal is "on" and the preset time elapses in that "on" state and the solenoid current is "on". Detected by such solenoid current sensing method Mathematical value calculated Mathematics from the aforementioned battery voltage and the aforementioned solenoid current is compared with Preset value by such battery condition judgment path to judge battery condition. And judging results will be displayed in a way that shows results 4. Fuel injector according to claim 2 or No. 3, where the timing for detection The solenoid current after the preset time elapses is It corresponds to the detection timing of the aforementioned solenoid current. For driving pulse width modulation to improve module fuel injection quantity accuracy. Inject such fuel 5. Fuel injector according to any of the claims 1 to 3 Where the timing for It detects the said battery voltage or the said solenoid current after the elapsed time. The preset is set at a timing just before the solenoid's drive signal is "off". 6. Fuel injector that are included. A fuel injection module with functions for the pump's round-trip movement by "on" and "off" the electric current to the solenoid, suction and pressure. And fuel injection, a control unit for providing a driving signal to the aforementioned fuel injection module on The basis of the operating conditions of the engine, the generator for generating electricity by Rotation of the said engine, and the battery for storing electricity Where the battery voltage detection path and the battery condition judgment path are organized inside. Such control unit; Battery voltage at the "off" time of the said solenoid drive signal. And the battery voltage after the said solenoid's drive signal is "on" and the time is set. Passes are detected by the aforementioned battery voltage detection method. The difference of The two aforementioned battery voltages are calculated and compared with a predetermined value by Battery condition judgment method to judge the condition of the battery. And the result will be displayed in Way of display 7. Fuel injector according to any of the claims 1 to No. 3 or No. 6. Where the fuel injector It also contains a solenoid thrust circuit for accumulating the accumulated power in the solenoid. Just after the solenoid's driving signal has been "off" and the electric discharge goes to the solenoid, it will go to the capacitor immediately. When the solenoid's drive signal is subsequently "ON" and the preset time after the "ON" of the solenoid's driving signal, The above time is set for the complete discharge of such capacitors. 8. How to judge the malfunction of the included fuel injector Available fuel injection module The function for the round-trip movement of the pump by "on" and "off" the electric current to the solenoid, suction and pressure and fuel injection, control unit for signaling. drive To the aforementioned fuel injection module based on the operating conditions of the engine, generator For generating electricity by the rotation of such engines, and storage batteries where battery voltage sensing path, solenoid current sensing path And the way Judging the battery condition is provided within the said control unit, which is included; Procedure for detecting battery voltage by such battery voltage detection method. After the said solenoid's drive signal is turned "on" and the preset time has passed. Go into the "on" state for detecting the solenoid current by means of the electro-current sensing path. Leonid said The procedure for determining the battery condition by comparing the mathematical values which are Mathematically, the aforementioned battery voltage and the said solenoid current with a value at Predetermined by means of judging the condition of such batteries and; The procedure for displaying the results of such decisions in a visual way.