The diagnosis of fuel injection quantity through the fuel pressure sensor of the common rail in diesel engines

2016 ◽  
pp. 615-617
Author(s):  
C Xu ◽  
G Yue ◽  
Y Lei
Keyword(s):  
Pressure Sensor ◽  
Diesel Engines ◽  
Fuel Injection ◽  
Common Rail ◽  
Injection Quantity ◽  
The Common

scholarly journals Providing Boot-Type Injection Rate Shape by Electric Impulse Control of the Common Rail Injector

2020 ◽  
pp. 32-42
Author(s):  
A.Y. Dunin ◽  
M.G. Shatrov ◽  
L.N. Golubkov ◽  
A.L. Yakovenko
Keyword(s):  
Diesel Engines ◽  
Fuel Injection ◽  
Control Valve ◽  
Road Construction ◽  
Injection Rate ◽  
Common Rail ◽  
Oxide Content ◽  
Common Rail Injector ◽  
Electric Impulse ◽  
The Common

For effective reduction of noise level and nitrogen oxide content in exhaust fumes of diesel engines, multistage fuel injection is used in combination with control of the front edge shape of the main injection. At the Moscow Automobile and Road Construction State Technical University (MADI), a method of control of the injection rate shape using an electric impulse was proposed, which was applied to the electromagnet of the control valve of the injector of the common rail fuel system. A computational and experimental analysis of the possibility of boot-type injection rate shape was carried out. The studies involved three most used designs of the common rail injector (CRI): CRI 1 featuring a control valve with shut-off cone and piston; CRI 2 consisting of a flat-lock control valve and a needle, which does not overlap the drain when the needle is in the highest position; CRI 3 with an injector that partially overlaps the drain. It was established that friction in the control valve piston and the guide surface pair of CRI 1 complicated the implementation of the boot-type injection rate due to its smoothing. CRI 2 and CRI 3 provide boot-type injection rate at different pressures in the fuel accumulator. The CRI 3 example shows that the instability of fuel supply during boot-type injection rate is comparable with that of fuel pre-injection, which is widely used in the organization of the common rail diesel engines working process.

scholarly journals Use of biogas to power diesel engines with common rail fuel systems

2018 ◽  
Vol 182 ◽  
pp. 01018
Author(s):  
Sławomir Wierzbicki ◽  
Michał Śmieja
Keyword(s):  
Diesel Engines ◽  
Alternative Energy ◽  
Liquid Fuel ◽  
Fossil Fuels ◽  
Fuel Injection ◽  
Raw Materials ◽  
Common Rail ◽  
Dual Fuel ◽  
Alternative Energy Sources ◽  
Study Results

The limited resources of fossil fuels, as well as the search for a reduction in emissions of carbon dioxide and other toxic compounds to the atmosphere have prompted the search for new, alternative energy sources. One of the potential fuels which may be widely used in the future as a fuel is biogas which can be obtained from various types of raw materials. The article presents selected results as regards the effects of the proportion of biogas of various compositions on the course of combustion in a dual-fuel diesel engine with a Common Rail fuel system. The presented study results indicate the possibility for the use of fuels of this type in diesel engines; although changes are necessary in the manner of controlling liquid fuel injection.

Visualization of the Parameters and Changes of Signals Controlling the Operation of Common Rail Injectors

2013 ◽  
Vol 210 ◽  
pp. 136-141 ◽  
Author(s):  
Sławomir Wierzbicki ◽  
Michał Śmieja
Keyword(s):  
Fuel Injection ◽  
Common Rail ◽  
Control Signal ◽  
Electric Signal ◽  
Common Rail System ◽  
Output Stage ◽  
Rail System ◽  
Electrical Part ◽  
The Common ◽  
Proper Operation

The electromagnetic injector in the Common Rail system is the actuator directly responsible for fuel injection. Its proper operation is enabled by ensuring appropriately shaped changes of the electric signal worked out by the output stage of the controller. This paper determines the repeatability of the control signal and the possibility of using this signal for the diagnostics of the electrical part of the injector.

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