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Development of High-pressure Common Rail Control System Based on MC9S12DG128 Microcontroller

Xu Bin

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Abstract

A control system based on Freescale's MC9S12DG128 was introduced in this paper.The injector and common rail pressure regulator were drived by current.The current magnitude in solenoid valve is controlled by PWM signals to meet the request of the large current when the valve just opened and small current after opening.Validation of the control system was performed on the test bench,the result shows that the control system can adjust the injection fuel quantity and the injection rate flexibly and accurately.

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What this paper is about

A control system based on Freescale's MC9S12DG128 was introduced in this paper.The injector and common rail pressure regulator were drived by current.The current magnitude in solenoid valve is controlled by PWM signals to meet the request of the large current when the valve just opened and small current after opening.Validation of the control system was performed on the test bench,the result shows that the control system can adjust the injection fuel quantity and the injection rate flexibly and accurately.

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Available abstract

A control system based on Freescale's MC9S12DG128 was introduced in this paper.The injector and common rail pressure regulator were drived by current.The current magnitude in solenoid valve is controlled by PWM signals to meet the request of the large current when the valve just opened and small current after opening.Validation of the control system was performed on the test bench,the result shows that the control system can adjust the injection fuel quantity and the injection rate flexibly and accurately.

Key concepts: Solenoid valve, Common rail, Engineering, Injector, Current (fluid), Pulse-width modulation, Automotive engineering, Microcontroller

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Development of High-pressure Common Rail Control System Based on MC9S12DG128 Microcontroller — Research Paper | ScholarLens