Title:
VARIABLE CYCLE TYPE INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JP3261328
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To achieve an increase in shaft torque and reduction in fuel consumption in all rotating range of an internal combustion engine which is provided with, in an atmospheric air intake path to an air intake port with air intake valve connected to a combustion chamber, an exhaust turbocharger driven by the exhaust gas from an exhaust port with exhaust valve.
SOLUTION: An intake valve 11 and exhaust valve 12 are opened and closed at the valve timing of 4 cycle in both low and high speed rotating ranges of an internal combustion engine 1 so as to operate the engine at 4 cycle, and these valves are opened and closed at 2 cycle in a middle speed rotating range between the low and high speed rotating ranges so as to operate it at 2 cycle.
Inventors:
Kunio Hasegawa
Application Number:
JP3000097A
Publication Date:
February 25, 2002
Filing Date:
February 14, 1997
Export Citation:
Assignee:
Daihatsu Motor Co., Ltd.
International Classes:
F02B69/06; F02B75/02; (IPC1-7): F02B69/06
Attorney, Agent or Firm:
Akio Ishii (2 outside)