Title:
【発明の名称】内燃機関のカム切換制御装置
Document Type and Number:
Japanese Patent JP2687718
Kind Code:
B2
Abstract:
This invention relates to a variable cam engine of which each cylinder has at least one valve driven by multiplicity of cams which give different engine torque outputs. This invention provides an engine comprising a decision-making device which decides change-over of the cams along with a selection of a target cam according to the engine running conditions, a cam change-over mechanism which disengages a current cam from the valve and engages said target cam instead, a crank shaft angle sensor, a sequential control device which, when the cam change-over is made at an engine speed below a predetermined speed, actuates the cam change-over mechanism at predetermined intervals starting form a specific cylinder and proceeding in turn through the other cylinders, and a regulating device which regulates the combustion in each cylinder corresponding to the cam change-over. The fuel supply quantity and ignition period are thereby regulated according to the cam change-over for each cylinder, a torque step due to the cam change-over is prevented, and the cam change-over takes place smoothly.
Inventors:
Kenji Ikeura
Application Number:
JP31673990A
Publication Date:
December 08, 1997
Filing Date:
November 21, 1990
Export Citation:
Assignee:
Nissan Motor Co., Ltd
International Classes:
F01L1/26; F02D13/02; F02D37/00; F02D41/04; F02D43/00; F01L13/00; F02P5/15; (IPC1-7): F02D41/04; F01L13/00; F02D13/02; F02D43/00; F02P5/15
Domestic Patent References:
| JP2102344A |
Attorney, Agent or Firm:
Masaki Goto (1 person outside)