ScholarLens Back to search
2008•Ranshao kexue yu jishuRequires access

Influence of External EGR on Expanding HCCI Combustion Operation Range

Hua Zhao

Open publisher page 1 citations

Abstract

HCCI combustion could be achieved in a single-cylinder port injection Ricardo Hydra engine with varible valve actuation,using the internal EGR re-compression strategy.The influences of external EGR on HCCI combustion are analyzed.The results show that external EGR could postpone ignition timing,increase combustion duration,decrease peak pressure and increase the maximum rate of pressure rise.It could avoid the knocking effectively,and decrease emission on the boundary region of HCCI combustion.The more external EGR there is,the higher the load,but misfire could occur when there is too much external EGR.External EGR could break through the knocking limit,and expands the operation range with about 0.08 MPa.Due to lateness of ignition,misfire further limits the expansion of the operation range.

About this research paper

What this paper is about

HCCI combustion could be achieved in a single-cylinder port injection Ricardo Hydra engine with varible valve actuation,using the internal EGR re-compression strategy.The influences of external EGR on HCCI combustion are analyzed.The results show that external EGR could postpone ignition timing,increase combustion duration,decrease peak pressure and increase the maximum rate of pressure rise.It could avoid the knocking effectively,and decrease emission on the boundary region of HCCI combustion.The more external EGR there is,the higher the load,but misfire could occur when there is too much external EGR.External EGR could break through the knocking limit,and expands the operation range with about 0.08 MPa.Due to lateness of ignition,misfire further limits the expansion of the operation range.

Why it matters

OpenAlex reports 1 citations for this work. Citation counts describe recorded attention and do not establish research quality.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

HCCI combustion could be achieved in a single-cylinder port injection Ricardo Hydra engine with varible valve actuation,using the internal EGR re-compression strategy.The influences of external EGR on HCCI combustion are analyzed.The results show that external EGR could postpone ignition timing,increase combustion duration,decrease peak pressure and increase the maximum rate of pressure rise.It could avoid the knocking effectively,and decrease emission on the boundary region of HCCI combustion.The more external EGR there is,the higher the load,but misfire could occur when there is too much external EGR.External EGR could break through the knocking limit,and expands the operation range with about 0.08 MPa.Due to lateness of ignition,misfire further limits the expansion of the operation range.

Key concepts: Homogeneous charge compression ignition, Combustion, Automotive engineering, Ignition system, Exhaust gas recirculation, Materials science, Range (aeronautics), Ignition timing

Related papers

Related paper 1Related paper 2Related paper 3
Back to paper searchBrowse research topicsOriginal source
Influence of External EGR on Expanding HCCI Combustion Operation Range — Research Paper | ScholarLens