Home Products News Contact Us
Home > Supports > Generator Sets

The Function Of The Electronic Control Unit Of Diesel Generator Set

Nov. 16, 2021

In the electronically controlled high-pressure common rail fuel injection system of a 300kw diesel generator set, the establishment of fuel injection pressure is not related to the fuel injection volume, and the fuel injection pressure does not depend on the speed and fuel injection volume of the diesel engine. The high-pressure fuel storage is always filled with high-pressure fuel. The fuel injection quantity, fuel injection timing and fuel injection pressure are calculated by the electronic control unit (ECU) according to its stored characteristic curve and the diesel engine operating condition information collected by the sensor, and then control the opening and closing of the high-speed solenoid valve of each cylinder injector. Closed and realized.


The ECU of the diesel generator set obtains the requirements of the operator (accelerator pedal position) and the real-time working status of the diesel engine and equipment by means of sensors. Process the signal generated by the sensor and input via the data wire to control and adjust the diesel engine. The crankshaft speed sensor measures the speed of the diesel engine, and the camshaft phase sensor determines the firing sequence and phase. The accelerator pedal sensor is a potentiometer that informs the ECU about the driver's torque requirements through a voltage signal. The air mass flow sensor informs the ECU of the real-time intake air mass flow of the diesel engine to match the corresponding basic fuel injection volume according to the requirements of emission regulations. On supercharged diesel engines with boost pressure regulation, the boost pressure sensor is used to measure the boost pressure. At low temperature and when the diesel engine is in cold state, ECU can determine the appropriate start point of fuel injection, pre-injection fuel quantity and rated values of other parameters according to the signal values of the coolant temperature sensor and intake air temperature sensor.

diesel engine


1. The basic functions of the generator set ECU. The basic function of ECU is to control fuel injection at the right time with accurate quantity and suitable pressure, so as to ensure the smooth operation of diesel engine and obtain low fuel consumption, exhaust emissions and operating noise.


2. Additional functions of generator set ECU. The additional control and adjustment functions of the ECU are used to reduce exhaust emissions and fuel consumption, or to improve safety and comfort. For example, it is used to realize exhaust gas recirculation (EGR), boost pressure adjustment, vehicle speed control and electronic anti-theft locks. CAN bus system can exchange data with other electronic systems of the vehicle (such as ABS, transmission electronic control system). The diagnostic interface can output the operating data and fault codes stored in the system when the vehicle is overhauled.


Jiangsu Starlight Electricity Equipments Co.,Ltd. is one of the earliest manufacturers of generators and diesel generator sets in China. The company was established in 1974 and the company occupies an area. With an area of 86,000 square meters and a building area of 45,000 square meters, it has 64 sales and service departments across the country to provide users with one-stop service of design, supply, debugging and maintenance at any time. Welcome customers to come to consult and visit. Looking forward to your inquiry, please send email to us for details sales@dieselgeneratortech.com

Contact Us
  • Adds: No.2 Xingguang Road, Guxi Industrial Park, Taixing, Jiangsu, China.
  • Tel: +86 771 5805 269
  • FAX: +86 771 5805 259
  • Cellphone: +86 134 8102 4441
                    +86 138 7819 8542
  • E-mail: sales@dieselgeneratortech.com
Follow Us

Copyright © Jiangsu Starlight Electricity Equipments Co., Ltd.All Rights Reserved | Sitemap

Contact Us