Study of Lean Burn Gas Engine. Effect of Main Chamber.

Nakazono, Tohru

doi:10.1299/kikaib.58.1943

Cited by 1 publication

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The second stage is a result of the combustion of the mixture in the main chamber. 18,24 Figure 10 shows the DP pÀm and the HRR.m at different ISA. With the delay of the ISA, the combustion process in the pre-chamber is enhanced, the DP pÀm increases, the maximum appears earlier, the maximum of the HRR.m increases and appears close to the TDC, and the two-stage feature of the HRR.m curve is more conspicuous.…”

Section: Effect Of the Combustion In Pre-chamber On The Combustion In Main Chambermentioning

confidence: 99%

See 1 more Smart Citation

The scavenging timing of pre-chamber on the performance of a natural gas engine

Xue

Yong

Wang

2020

International Journal of Engine Research

View full text Add to dashboard Cite

The pre-chamber ignition system scavenged with natural gas can effectively improve the in-cylinder combustion process and extend the lean-burn limit of natural gas engines. The scavenging process affects the flow field and fuel-air mixture concentration distribution in the pre-chamber and affects the combustion process in the pre-chamber as well as the ignition process in the main chamber. This has a significant influence on the performance of natural gas engines. It is supposed that the ratio of natural gas remaining in the mixture inside the pre-chamber at the ignition timing affects the combustion process in the pre-chamber. To verify this suppose, an independent injection system for injecting natural gas into the pre-chamber is designed and experiments are carried out on a single-cylinder natural gas engine. The ratio of natural gas remaining in the mixture inside the pre-chamber at the ignition timing is adjusted by changing the injection start angle of the scavenging process. The combustion process in the pre-chamber and the main chamber are analyzed using the in-cylinder pressures. The results indicate that, with the delay of the injection start angle, the ratio of natural gas remaining in the mixture inside the pre-chamber at the ignition timing increases, the combustion process in the pre-chamber is enhanced, the maximum pressure difference between two chambers increases and appears earlier. The energy of the hot jets and the penetration of the jets increase, which enhances the combustion process in the main chamber.

show abstract

Section: Effect Of the Combustion In Pre-chamber On The Combustion In Main Chambermentioning

confidence: 99%

“…Many investigations on the performance of a natural gas engine equipped with a pre-chamber ignition system have been conducted. Tohru 18 conducted a set of experiments on a high-speed, small single-cylinder engine. The engine was equipped with a scavenged pre-chamber.…”

Section: Introductionmentioning

confidence: 99%