利用缸内滚流的非对称式射流预燃室及其点火控制方法
By designing an asymmetric jet pre-combustion chamber and optimizing ignition control methods, the flame velocity is increased by utilizing in-cylinder tumble flow, solving the problem of limited jet flame propagation in existing technologies, and achieving more efficient ignition stability and improved engine performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- TIANJIN UNIV
- Filing Date
- 2023-12-22
- Publication Date
- 2026-07-17
AI Technical Summary
The existing pre-combustion chamber design fails to effectively utilize the in-cylinder tumble flow, causing the propagation of the jet flame to be affected by the in-cylinder flow field, which cannot increase the flame velocity, suppress detonation, or extend the lean-burn limit.
The design incorporates an asymmetric jet pre-combustion chamber with flame jet orifices arranged along the cylinder tumble direction. Combined with active or passive pre-combustion chamber control, the fuel concentration and ignition timing within the pre-combustion chamber are adjusted via the injector, utilizing the cylinder tumble to increase flame velocity.
It increases the jet flame velocity, enhances ignition stability, suppresses knocking, increases engine power, and reduces fuel consumption.
Smart Images
Figure CN117780488B_ABST