Title:
A control device of a jump-spark-ignition type engine
Document Type and Number:
Japanese Patent JP5920237
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a control device of a spark ignition type engine capable of improving drop of high load torque in a velocity area in which scavenging efficiency due to a negative pressure wave generated by exhaust pulsation is relatively low.SOLUTION: A control device of a spark ignition type engine for retarding an ignition timing in a high load area of an engine is provided with a cooling mechanism 30 for cooling an engine body 1. An exhaust passage is constituted so that negative pressure waves generated by exhaust pulsation in an exhaust passage reach an exhaust port 7 during an overlapping period of suction and exhaust valves 8, 9 so as to scavenge residual gas in a cylinder 2. In the high load area, cooling ability of the cooling mechanism 30 is set higher in a velocity area in which scavenging efficiency is lower than that in the other velocity area, than that in the other velocity area.
Inventors:
Jun Sasaki
Naohiro Yamaguchi
Yusuke Oda
Naohiro Yamaguchi
Yusuke Oda
Application Number:
JP2013020768A
Publication Date:
May 18, 2016
Filing Date:
February 05, 2013
Export Citation:
Assignee:
Mazda Corporation Inc
International Classes:
F02P5/15; F01P7/14; F02B27/04; F02D43/00
Domestic Patent References:
| JP201084599A | ||||
| JP2012145005A | ||||
| JP200616977A | ||||
| JP2008215173A | ||||
| JP2004204707A | ||||
| JP58131359A | ||||
| JP2010159678A |
Attorney, Agent or Firm:
Etsushi Kotani
Masataka Otani
Ko Sato
Masataka Otani
Ko Sato