scholarly journals Valve actuator and fuel injection pump driver on Diesel Engine

2005 ◽  
Vol 2005 (6) ◽  
pp. 245-250
Author(s):  
Takahiko ITOH ◽  
Sumiko SEKI
Keyword(s):  
Diesel Engine ◽  
Fuel Injection ◽  
Injection Pump ◽  
Fuel Injection Pump

Paper 6: Torsional Vibrations in Fuel Injection Pump Drive Systems with Special Reference to Automotive Engines

1966 ◽  
Vol 181 (8) ◽  
pp. 84-90
Author(s):  
L. F. Martyn ◽  
T. M. B. Silcock
Keyword(s):  
Diesel Engine ◽  
Natural Frequency ◽  
Fuel Injection ◽  
Torsional Vibrations ◽  
Pump System ◽  
Automotive Engines ◽  
Injection Pump ◽  
Infinite Mass ◽  
Fuel Injection Pump ◽  
Drive Systems

The torsional vibrations which occur on the fuel injection pump of an automotive diesel engine were investigated. Calculations and tests showed that as well as vibrations transmitted from the crankshaft, the fuel pump could vibrate at the natural frequency of the torsional system consisting of the pump and the drive coupling against an infinite mass. This was excited by harmonic torques produced by the pump. Calculations were made to show the effect of variables on the natural frequency of the pump system including the instance when a crankshaft natural frequency coincided with a pump natural frequency. Calculations were also made of the effect of the engine harmonic torques on the pump vibrations. The results were verified by experiments.

Simulation Model of Four Stroke, Six Cylinder Marine Diesel Engine

2015 ◽  
Vol 236 ◽  
pp. 113-118
Author(s):  
Marcin Kluczyk ◽  
Andrzej Grządziela
Keyword(s):  
Diesel Engine ◽  
Fuel Injection ◽  
Technical Condition ◽  
Operational Experience ◽  
Fuel System ◽  
Engine Operation ◽  
Injection Pump ◽  
Fuel Injection Pump ◽  
Marine Diesel ◽  
Basic Equations

The paper presents a model of dynamics of six-cylinder inline diesel engine executed in the Matlab software. The basic equations necessary to describe the forces acting during the engine operation was presented. Application of some simplifications allowed to present proposal of a mathematical model of the engine, which allows analysis of changes of forces in the crank-piston system, depending on the technical condition of the fuel system elements. Operational experience indicate that one of the most common cause of failure of the fuel system is reduced fuel charge supplied by a defective fuel injection pump. Calculations of gas forces had been replaced by the implementation into the model indication charts recorded from tests on a engine test stand. Simulation results were presented as a result of FFT spectra of modeled tangential forces.

Design and Development of Double Helix Fuel Injection Pump for Four Stroke V-16 Rail Traction Diesel Engine

2007 ◽  
Author(s):  
A. K. Kathpal ◽  
Anirudh Gautam ◽  
Avinash Kumar Agarwal ◽  
R. Baskaran
Keyword(s):  
Diesel Engine ◽  
Fuel Economy ◽  
Fuel Injection ◽  
Double Helix ◽  
Fuel Efficiency ◽  
Injection System ◽  
Injection Timing ◽  
Fuel Injection System ◽  
Injection Pump ◽  
Fuel Injection Pump

The diesel fuel-injection system of ALCO DLW 251 engine consists of single cylinder injection pumps, delivery pipes, and fuel injector nozzles. Fuel injection into the combustion chamber through multi-hole nozzles delivers designed power and fuel efficiency. The two most important variables in a fuel injection system of a diesel engine are the injection pressure and injection timing. Proper timing of the injection process is essential for satisfactory diesel engine operation and performance. Injection timing needs to be optimised for an engine based on requirements of power, fuel economy, mechanical and thermal loading limitations, smoke and emissions etc. Since each of these requirements varies with the operating conditions, sometimes contrary to the requirements of the other parameters, the map of optimised injection timing can be very complex. The ALCO DLW 251 engine’s fuel injection pump is jerk type to permit accurate metering and timing of the fuel injected. The pump has a ported barrel and constant-stroke plunger incorporating a bottom helix for fuel delivery control with constant injection timing. From the point of view of good power and fuel economy, combustion should take place so that the peak firing pressure occurs at about 10–15° after TDC and is usually a few degrees after combustion starts. For this to happen, fuel should be injected at an appropriate time, depending on Injection delay and Ignition delay. Both these factors are dependent on the speed and load. Changing the operating point of the engine may change either one or both types of delay, altering the moment of start of combustion. Various researchers have shown that both the Injection and the Ignition delay are reduced as the engine speed is decreased resulting in advancement of injection timing at lower speeds (and loads). This condition will be corrected by varying the static injection timing, which can be achieved by providing a modified helix on the plunger to delay the start of fuel injection, for the lower speeds and loads. A new double helix (upper and lower helix) fuel injection pump for the ALCO DLW 251 16 V engine has been designed. The new fuel injection pump has been tested on the engine test cell at Research Designs & Standards Organisation and has shown an improvement of 1.2% in locomotive duty cycle fuel consumption. This paper describes the design & development of double helix fuel injection pump and discusses the engine tests completed to verify the projected improvements in fuel efficiency.

Design of Mechanical and Combustion System for Small Non-Road Diesel Engine to Meet the EPA IV Emission Regulations

2010 ◽  
Vol 43 ◽  
pp. 476-479 ◽  
Author(s):  
Bi Feng Yin ◽  
Tao Guan ◽  
Jiang Guang He ◽  
Yi Xu
Keyword(s):  
Diesel Engine ◽  
Fuel Injection ◽  
Cylinder Liner ◽  
Combustion System ◽  
Oil Consumption ◽  
Emission Performance ◽  
Injection Pump ◽  
Emission Regulations ◽  
Fuel Injection Pump ◽  
Strength And Stiffness

Based on 1.9L small non-road diesel engine, mechanical and combustion system were redesigned and optimized to improve the emission performance. The engine block structure such as ribs, bolt hole depth and water jacket were optimized to improve the strength and stiffness and reduce the block’s distortion. The type of piston ring, piston skirt profile and their fit clearances were also optimized, and plat-honing cylinder liner was used to reduce the oil consumption. In combustion system, fuel injection pump, injection nozzle, fuel spray distribution and fuel supply advance angle were modified, combustion chamber was changed to small platform dumbbell-shaped chamber, and the closed-loop exhaust gas recirculation (EGR) system controlled by negative pressure was applied to trade-off the emissions of NOX and PM. The test results show that the emission performance of optimum diesel engine could meet EPA IV emission regulations.

Oil Supply Characteristic Test and Application of Fuel Injection Pump for Diesel Engine

2014 ◽  
Vol 490-491 ◽  
pp. 1717-1720
Author(s):  
Jian Huang
Keyword(s):  
Fault Diagnosis ◽  
Diesel Engine ◽  
Fuel Injection ◽  
Diesel Oil ◽  
Oil Consumption ◽  
Oil Supply ◽  
Supply Pressure ◽  
Injection Pump ◽  
Fuel Injection Pump

In the fuel injection pump on crude oil engine, the precise couple attrition will cause loss of oil supply pressure, oil consumption increase, under-power, emission pollution increase and other problems after the long-term usage. The traditional filed-strip is complicated and time-consuming. Through the summary of engine trouble regulation, we can find out fault diagnosis without disassemble has guiding significance for the modern vehicle maintenance and repair. This article realizes the test and application of fault diagnosis for diesel oil supply characteristic through testing oil supply pressure and oil supply diesel engine.

Development of Retrofit DME Diesel Engine Operating with Rotary Distributor Fuel Injection Pump

2003 ◽  
Author(s):  
Koichi Kinoshita ◽  
Mitsuharu Oguma ◽  
Shinichi Goto ◽  
Kouseki Sugiyama ◽  
Masataka Kajiwara ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Fuel Injection ◽  
Injection Pump ◽  
Fuel Injection Pump
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