CYLINDER DIRECT INJECTION TYPE INTERNAL COMBUSTION ENGINE

Title:

CYLINDER DIRECT INJECTION TYPE INTERNAL COMBUSTION ENGINE

Document Type and Number:

Japanese Patent JP2005155395

Kind Code:

A

Abstract:

To perform stratified combustion operation excellent in fuel economy and exhaust emission in wider operation range.

A fuel injection valve and an ignition plug are arranged at a center position on an upper surface of a combustion chamber, a cavity is formed at a center position of a piston crown surface. This engine includes two stratified combustion modes of a first stratified operation mode (mode 1) in which fuel before impinging on a piston during fuel injection or right before fuel injection completion is ignited and a second stratified operation mode (mode 2) in which fuel via the piston is ignited after fuel injection completion. Operation of the mode 2 is performed at low engine speed and in a high engine load zone and operation of the mode 1 is performed at high engine speed and in a low engine load zone. A swirl generation means such as a swirl control valve is included, stronger swirl is given in the mode 1 than the mode 2 under same operation conditions.

Inventors:

TERACHI ATSUSHI
KAKUHO AKIHIKO

Application Number:

JP2003393589A

Publication Date:

June 16, 2005

Filing Date:

November 25, 2003

Export Citation:

Click for automatic bibliography generation Help

Assignee:

NISSAN MOTOR

International Classes:

F02P5/15; F02B17/00; F02B23/10; F02B31/00; F02B31/02; F02D43/00; F02D45/00; F02F3/26; (IPC1-7): F02D43/00; F02B17/00; F02B23/10; F02B31/00; F02B31/02; F02D45/00; F02F3/26; F02P5/15

Attorney, Agent or Firm:

Tsuyoshi Hashimoto
Hiromichi Kobayashi
Tomioka Kiyoshi

Previous Patent: START DEVICE FOR DIAPHRAGM TYPE CARBURETOR

Next Patent: AUTOMOBILE AND METHOD FOR CONTROLLING THE SAME