The Research of Lean Combustion Characteristic of Compound Injection System of Direct Injection Engine

Jiang Feng Mou; Rui Qing Chen; Yi Wei Lu

doi:10.4028/www.scientific.net/AMM.532.362

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 532The Research of Lean Combustion Characteristic of...

The Research of Lean Combustion Characteristic of Compound Injection System of Direct Injection Engine

Abstract:

This paper studies the lean burn limit characteristic of the compound injection system of the direct-injection gasoline engine. The low pressure nozzle on the intake manifold can achieve quality homogeneous lean mixture, and the direct injection in the cylinder can realized the dense mixture gas near the spark plug. By adjusting the two injection timing and injection quantity, and a strong intake tumble flow with special shaped combustion chamber, it can produces the reverse tumble to form different hierarchical levels of mixed gas in the cylinder. Experimental results show: the compound combustion system to the original direct-injection engine lean burn limit raise 1.8-2.5 AFR unit.

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Periodical:

Applied Mechanics and Materials (Volume 532)

Pages:

362-366

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.532.362

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Online since:

February 2014

Authors:

Jiang Feng Mou*, Rui Qing Chen, Yi Wei Lu

Keywords:

AFR, GDI, Intake Manifold, Intake Tumble, Lean Burn

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