Experiment-based software optimization for multiple-injection control in a common-rail system

Zhu, Keqing; Xu, Qinglin; Mao, Xianyin; Bin, Zhuo; Wang, J.-X.

doi:10.1243/09544070jauto860

Cited by 3 publications

(4 citation statements)

References 5 publications

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“…The mechanical framework of the EFS 8246 EMI qualifier 13,14 is shown in Figure 3. The measurement principle of the instantaneous injection quantity is based on the displacement of the piston under the action of the injected fluid.…”

Section: Efs 8246 Electronic Mono-injector Qualifiermentioning

confidence: 99%

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Start-of-injection-based software optimization for consistency between the cylinders in common-rail diesel engines

Mao

Xiong

Wang

et al. 2015

Proceedings of the Institution of Mechanical Engineers, Part D:

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A common-rail system is widely used in electronically controlled diesel engines and has been used in Euro IV diesel engine development, as its consistency between the fuel injection quantities of the injectors can be controlled accurately. In Chinese home-made common-rail systems, the bottleneck is mainly caused by the mechanical manufacturing, which results in variation in the fuel injection quantity of different injectors. In spite of the low-class hardware limit, this paper introduces a software method to correct the inconsistency between the fuel injection quantities of the injectors over the whole range during which the engine is running. First, the main factor affecting the inconsistency between the fuel injection quantities of the injectors is determined on the basis of a series of experiments. Second, an optimization algorithm based on the start of injection is proposed to compensate for the difference between the injectors. Finally, the algorithm is verified on an EFS 8246 fuel-pump-testing platform and further on a YC6A diesel engine. The experiments demonstrate that the correction based on the start of injection not only can reduce the inconsistency between the fuel injection quantities of the injectors but also can improve both the idling control and the emission performance for the electronically controlled diesel engine. This paper also provides a successful example for improving the consistency between the fuel injection quantities from cylinder to cylinder in an electronically controlled diesel engine by this software optimization method.

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Section: Efs 8246 Electronic Mono-injector Qualifiermentioning

confidence: 99%

“…The details of the EFS 8246 EMI qualifier have been described in the relevant manual 13 and by Zhu. 14…”

Section: Efs 8246 Electronic Mono-injector Qualifiermentioning

confidence: 99%

Start-of-injection-based software optimization for consistency between the cylinders in common-rail diesel engines

Mao

Xiong

Wang

et al. 2015

Proceedings of the Institution of Mechanical Engineers, Part D:

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show abstract

“…2.2 EFS8246 electronic mono-injector qualifier [3,4] The mechanical frame of the EFS8246 EMI qualifier is shown in Fig. 3.…”

Section: Gd-eup System [2]mentioning

confidence: 99%

“…The variation in position of this piston is an exact reflection of the injected fluid volume. The details of the EFS8246 EMI qualifier have been described in references [3] and [4].…”

Section: Gd-eup System [2]mentioning

confidence: 99%

Experiment-based software optimization for cylinders consistency in electronic unit pump diesel engines

Xiong

Mao

Xiao

et al. 2011

Proceedings of the Institution of Mechanical Engineers, Part D:

Self Cite

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Besides the common-rail system, the electronic unit pump (EUP) is also being widely used in electronically controlled diesel engines. However, the EUP system is restricted for use in EURO IV diesel engine development, as its consistency of fuel delivery is hard to control accurately. As has been found in the case of the Chinese home-made EUP system, this problem is mainly caused by mechanical manufacture. In spite of the low-class hardware limit, this paper introduces a software method to correct the inconsistency of fuel delivery among EUPs at the whole range for engine running. First, the characteristics of inconsistency of fuel delivery among EUPs are determined based on a series of experiments. Second, an optimization algorithm with multi-point correction is proposed to adapt to the tendency for non-linear inconsistency. Finally, the algorithm is verified on the fuel pump testing platform, made by EFS company, and further on a YC6J diesel engine. The experiments demonstrate that the multi-point correction is not only able to weaken the inconsistency of fuel delivery among EUPs, but also improves both the idling control and the emission performance for an electronically controlled diesel engine. This paper also provides a successful example of an electronically controlled diesel engine where the consistency of fuel delivery from cylinder to cylinder is improved by this software optimization method.

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Experimental and numerical investigation on pressure characteristics of the dual-valve controlled fuel system for low-speed diesel engines

Lan

Fan

Bai

et al. 2021

Fuel

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Experiment-based software optimization for multiple-injection control in a common-rail system

Cited by 3 publications

References 5 publications

Start-of-injection-based software optimization for consistency between the cylinders in common-rail diesel engines

Start-of-injection-based software optimization for consistency between the cylinders in common-rail diesel engines

Experiment-based software optimization for cylinders consistency in electronic unit pump diesel engines

Experimental and numerical investigation on pressure characteristics of the dual-valve controlled fuel system for low-speed diesel engines

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