Optimising the cam profile of an electronic unit pump for a heavy-duty diesel engine

Qiu, Tao; Dai, Houde; Lei, Yan; Cao, Chen; Xu-chu, LI

doi:10.1016/j.energy.2015.02.021

Cited by 16 publications

(8 citation statements)

References 16 publications

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“…Constant acceleration profiles have been analyzed along with the relationship between positive acceleration, negative acceleration and lift area [9]. The method can be applied to other cam profiles.…”

Section: Vishalkumar K Dhummansure D Ramesh Rao and Yogesh Bagmarmentioning

confidence: 99%

CAM Profile Optimisation of Single Cylinder Diesel Engine to Reduce Noise and Vibration

Dhummansure¹,

Tjprc²

2018

IJMPERD

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The optimization of the cam profile plays an important role to reduce noise and vibration in an internal combustion engine. This study analyzes a method for the design and experimentation of different cam profiles. The proposed method commences with the use of higher order polynomials for the cam profile. Subsequently, an optimum cam profile is redesigned and used in the engine. The improvement of the cam profile is based on optimized factors such as velocity and acceleration in the cam profile. The vibration and noise due to impact between cam and tappet can be controlled by adjusting the ramp height and the velocity in the ramp area. Also, there is a significant improvement in Sound quality. The experimental result shows a reduction in overall noise by 1.86dB (A) in case of optimized cycloidal cam profile of single cylinder engine.

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Section: Vishalkumar K Dhummansure D Ramesh Rao and Yogesh Bagmarmentioning

confidence: 99%

CAM Profile Optimisation of Single Cylinder Diesel Engine to Reduce Noise and Vibration

Dhummansure¹,

Tjprc²

2018

IJMPERD

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“…Then, the compressed fuel flows at the speed u p from the pump to the pipe and finally to the nozzle. The fuel in the nozzle with the pressure P n is injected into the cylinder, which has a back pressure P b . 15 P p could be measured by a transducer in the pipe connecting the pump and injector.…”

Section: Experimental Setup and Test Conditionsmentioning

confidence: 99%

“…13,14 However, the CRDI system is not widely used in many countries due to the poor fuel quality there. Thus, as an alternative, the electronic unit pump (EUP) system, which has a low requirement on the fuel quality and is easier to be machined, 15 is more often equipped on the engine in these countries.…”

Section: Introductionmentioning

confidence: 99%

Effects of fuel temperature on injection performance of an EUP system

Liu

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part D:

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The fuel temperature has a great influence on the characteristics of an electronic unit pump (EUP) system, especially on the injection performance. This paper studies the regularity of the high-pressure fuel supply system performance at different fuel temperatures. The injection quantity, the injection rate, the fuel pressure, and the needle lift were measured by the EUP system test bench. Investigation results showed that, with the increase of fuel temperature, the injection quantity and maximum injection rate decreased, the time of start injection was delayed, and the peak fuel pressure value decreased. For the needle valve, as the temperature was raised its closing time was advanced at low speed conditions but delayed at high speed conditions. In addition, the empirical equations for the fuel temperature effects on the circulating fuel injection quantity and peak pressure are proposed by the experimental test and simulation data. This study will help to further apply and study the engine, and provide a reference for engine fuel supply control system design.

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“…With the continuous development of electronic control technology for diesel engines, the electronic control fuel injection system has become an inevitable trend to meet the requirements of increasingly stringent diesel emission regulations [1][2][3][4]. HSV is the most widely used automatic control component in ECFIS for diesel.…”

Section: Introductionmentioning

confidence: 99%

Analysis on Dynamic Response Characteristics of High-Speed Solenoid Valve for Electronic Control Fuel Injection System

Zhang¹,

Liu

Fan

et al. 2020

Mathematical Problems in Engineering

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A 3D numerical simulation model of high-speed solenoid valve (HSV) for electronic control fuel injection system (ECFIS) has been developed. The model has been validated experimentally with acceptable maximum errors of 2% and 8.7% in closure response time and open response time, respectively. Effect of assembly parameters such as residual air gap, maximum lift of valve stem, mass of the moving parts, spring stiffness, and spring pretightening force on dynamic response characteristics of HSV has been analyzed in detail using the simulation model, and influence rules of various parameters on dynamic response characteristics have been established. Moreover, the correlation between interaction factors of main influence factors and dynamic response characteristics of HSV has also been analyzed. It is concluded that residual air gap, maximum lift of the valve stem, and spring pretightening force are the main influencing factors on dynamic response characteristics of HSV, and there are obvious interaction effects between them; when two or three of these main influencing factors are adjusted at the same time, the interaction effects should be considered.

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Optimising the cam profile of an electronic unit pump for a heavy-duty diesel engine

Cited by 16 publications

References 16 publications

CAM Profile Optimisation of Single Cylinder Diesel Engine to Reduce Noise and Vibration

CAM Profile Optimisation of Single Cylinder Diesel Engine to Reduce Noise and Vibration

Effects of fuel temperature on injection performance of an EUP system

Analysis on Dynamic Response Characteristics of High-Speed Solenoid Valve for Electronic Control Fuel Injection System

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