High Pressure Common Rail fuel system components on the main

I. Introduction

Common Rail fuel injection system in the 20th century in the late 1990's formal entry into the practical stage. Such electronic control system can be divided into: Accumulator-Electronic Fuel Injection System, electric hydraulic pressure control system and high-pressure fuel injection electronically controlled common rail fuel-injection system. High Pressure Common Rail system can be realized in the traditional fuel injection system can not be achieved in the function of its advantages:

A. Common Rail Injection System of flexible adjustable pressure on the different conditions can determine the best injection pressure required to optimize engine performance.

B. can be independently controlled fuel injection is flexible, with a high injection pressure (120MPa to 200MPa), which can control NOx and particulates (PM) in the smaller numerical in order to meet emission requirements.

C. Flexible control injection rate changes achieve the desired fuel injection law, easy to implement pre-injection and multiple spray can reduce NOx diesel engine can ensure that the good momentum and economy.

D. by the solenoid valve control fuel injection, the control high precision, high pressure Oil bubble and there will not be zero residual pressure and, therefore, in the operation of the diesel engine, fuel injection cycle changes in the volume of small, non-oil tank uniformity can be improved, so as to reduce engine vibration and reduce emissions.