Title:
INTAKE AND EXHAUST DEVICE FOR FOUR-CYCLE ENGINE
Document Type and Number:
Japanese Patent JPS59153907
Kind Code:
A
Abstract:
PURPOSE:To ensure a large port area for simplifying the arrangement of a valve operating mechanism, by carrying out the intake and exhaust with the use of one common port. CONSTITUTION:In a cylinder head 2, there are formed an intake/exhaust port 3 and intake and exhaust passages 11, 12 communicated with the intake/exhaust port 3. An intake/exhaust valve 6 opens and closes the intake/exhaust port 3. Control valves 13, 14 such as, for example, reed valves, which are opened and closed in association with pressure differential, and disposed in the intake and exhaust passages 11, 12, respectively. The intake/exhaust valve 6 continuously opens during successive exhaust and intake strokes, and the intake and exhaust are controlled by the controlled valves 13, 14 which open and close. Since only a single port may be formed in one cylinder so that the area of this port may be made large, thereby only one valve actuating mechanism is sufficient so that the arrangement thereof may be simplified.
Inventors:
TERASAKA YOSHITSUNA
Application Number:
JP2743683A
Publication Date:
September 01, 1984
Filing Date:
February 21, 1983
Export Citation:
Assignee:
NISSAN MOTOR
International Classes:
F01L1/28; (IPC1-7): F01L1/28
Attorney, Agent or Firm:
Fujiya Shiga