GD-1 High Pressure Common Rail Diesel Engine Contr -

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GD-1 High Pressure Common Rail Diesel Engine Control Strategy for emergency deceleration

Electronically controlled diesel engine test bed were tested. The calculation of the controller ECU in real time through CAN communication line monitoring and calibration. Figure 6 is a rapid deceleration control effect of actual conditions. Time / s Figure 6 urgent deceleration condition effects of actual control the speed of 1360r/min engine began to heat running, common-rail oil remained steady at 68MPa on the target oil pressure. When the throttle valve opening, suddenly reduced to 0,[link widoczny dla zalogowanych], ECU to determine at this time to meet the urgent deceleration condition to enter the speed condition,[link widoczny dla zalogowanych], immediately stop the fuel injection, but still maintain a certain common-rail oil; when the engine speed drops to below 1000r/min, ECU recovery injection, circulating oil slowly increasing, with the speed deviation between the target idle speed decreases, rapidly increasing fuel cycle, until the fall to the target idle speed when the fuel was converted to the idle loop fuel. Figure 6 shows the engine speed a smooth transition to the target idle speed,[link widoczny dla zalogowanych], oil pressure common rail is also a smooth transition to the idle condition of the target injection pressure,[link widoczny dla zalogowanych], converted by the rapid deceleration to idle condition the control condition is very good. 3 Conclusion In High Pressure Common Rail fuel injection system, based on the design of the engine control strategy during emergency deceleration, respectively, the fuel injection quantity, injection pressure and fuel injection control. The results show that the above control strategy can effectively improve the performance of diesel engine emergency deceleration, speed and common rail diesel engine to achieve a smooth transition of oil pressure.

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