Characteristics and Application of Electronically Controlled Common rail System

1. Features of electronically controlled Common rail system

〔1〕 Free adjustment of fuel injection pressure [common rail pressure control].

〔2〕 Free adjustment of fuel injection quantity.

〔3〕 Free adjustment of fuel injection time. The starting and ending points of fuel injection can be easily adjusted.

〔4〕 Free adjustment of fuel injection rate. Can achieve pre injection, main injection, and post injection, and can achieve multi stage injection according to emission requirements

〔5〕 Higher fuel injection pressure. At present, it can reach 160MPa, and in the future, it can reach 200Mpa·

〔6〕 The fuel injection pressure is compatible with the actual operating conditions. In the Common rail system, the injection pressure (common rail pressure) is independent of the engine speed and load, and can be independently controlled. The common rail fuel pressure is measured by another sensor of the common rail pressure, and it will respond to the progress of the set target injection pressure.

〔7〕 Compared with other electronically controlled diesel injection systems, the electronically controlled Common rail system has higher economic and technical advantages

〔8〕 Multiple control parameters ensure accurate control.

〔9〕 Good power, economy, and exhaust purification.

〔10〕 The fluctuation of system oil pressure is small.

〔11〕 Adopting high-speed electromagnetic on-off valve control, with high control sensitivity.

〔12〕 Applicable to a wide range of applications.

〔13〕 The system has high cost and maintenance costs. Comparison of advantages and disadvantages between electronically controlled Common rail and electronically controlled unit pump: comparison of three fuel injection systems for car diesel engines

2. Application of Electronic Control Common rail System

Suitable for various types of sedans, small, medium, and heavy-duty diesel engines, it is currently the mainstream technology and development trend of diesel engines.