STUDY ON HOMOGENOUS CHARGE COMPRESSION IGNITION (HCCI) BY USING EXHAUST GAS RECIRCULATION SYSTEM

  • Khương Thị Hà
  • Nguyễn Cao Văn
  • Văn Đăng Cương
  • Bùi Văn Chinh
Keywords: HCCI, EGR, SOC

Abstract

Studying the conversion from traditional diesel engine to engine operating
on fire principle due to Homogeneous Charge Compression Ignition (HCCI) based
on research of single cylinder diesel engine BD178FE which is used, nonturbocharged, air-cooled, and has a compression ratio of 20. This engine converts
to HCCI combustion process at a compression ratio of 15.4, it has a 10 ÷ 30%
change Exhaust Gas Recirculation (EGR), rate with 5% division, speed mode from
1200rpm to 2400rpm with division of 400rpm and load modes 10%, 20%, 30%
and 50%, which corresponds to a torque of 1.24Nm; 2.48Nm; 3.72Nm and
6.2Nm. The results show that, the HCCI engine operates stably in the research
mode with useful torque and is equivalent to the original diesel engine, but the
combustion occurs early before the dead point. Gradually increasing the rate of
EGR will reduce premature burning and diffuse burning in hot flames.

điểm /   đánh giá
Published
2020-11-13
Section
RESEARCH AND DEVELOPMENT