Title:
COMPRESSED SELF-IGNITION TYPE GASOLINE ENGINE
Document Type and Number:
Japanese Patent JP3840871
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a compressed self-ignition type gasoline engine wherein the discharge of unburnt fuel is reduce din the case of compressed self-ignition and combustion and its fuel efficiency is improved.
SOLUTION: A tumble control valve 14 is disposed at the front eng part of a partition plate 18 partitioning the inside of an intake port 5 into upper and lower parts. In the case of compressed ignition and combustion, an upper intake passage is closed by the valve 14 for the purpose of causing reverse tumble flow within combustion chamber and densely distributing the fuel injected from a fuel injection valve 19 on the exhaust side of the inside of a cylinder, and open/close timing-variable means 16, 17 are controlled in order to get the timing of intake/exhaust valves 6, 8 into a minus-overlapped condition and internal ERG(exhaust gas recirculation) gas is distributed on the exhaust side of the inside of the cylinder for the temperature on the exhaust side of the inside of the cylinder to be higher than that on the intake side thereof in temperature distribution. Accordingly, compressed ignition is caused on the exhaust side and the exhaust valve 8 is closed in the process of an exhaust stroke. Consequently, the unburnt fuel on the intake side is carried over with the EGR gas to the next cycle.
Inventors:
Hiroshi Miyakubo
Koji Hiraya
Koji Hiraya
Application Number:
JP2000070820A
Publication Date:
November 01, 2006
Filing Date:
March 14, 2000
Export Citation:
Assignee:
Nissan Motor Co., Ltd
International Classes:
F01L1/34; F02B1/12; F02B3/10; F02B11/00; F02B17/00; F02B23/10; F02B31/00; F02D9/02; F02D13/02; F02D41/02; F02D43/00; F02M25/07; F02B75/12; (IPC1-7): F02B1/12; F01L1/34; F02B3/10; F02B11/00; F02B17/00; F02B23/10; F02B31/00; F02D9/02; F02D13/02; F02D41/02; F02D43/00
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Attorney, Agent or Firm:
Hidekazu Miyoshi