Title:
FOUR-CYCLE INTERNAL-COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JPS59185809
Kind Code:
A
Abstract:
PURPOSE:To improve efficiency of air intake and exhaust by providing an axis of air intake and exhaust ports nearly on a straight line in such a manner that it slantly intersects a cam shaft on a floor plan. CONSTITUTION:An axis C-D of an air intake port 202 and an exhaust port 203 is provided in such a manner that it slantly intersects an axis of a cam shaft, which sways locker arms 209, 210, 211, 212, on a floor plan and further both ports are arranged on a straight line. Axes of air intake valve and an exhaust valve (a) are arranged in coincidence with or in parallel with the axis C-D of the ports. Accordingly, even in case an engine is mounted on a motorcycle, air intake and exhaust ports are arranged on a straight line in opposition to each other in front and rear on a floor plan, and efficiency of air intake and exhaust is improved and formation of air intake and exhaust ports is easily performed.
More Like This:
Inventors:
MATSUDA MINORU
Application Number:
JP5975383A
Publication Date:
October 22, 1984
Filing Date:
April 05, 1983
Export Citation:
Assignee:
HONDA MOTOR CO LTD
International Classes:
F01L1/12; F01L1/26; F02F1/42; F02B75/02; (IPC1-7): F01L1/00; F01L1/04; F01L1/12
Domestic Patent References:
| JP54074816B |
Foreign References:
| US3563214A | 1971-02-16 | |||
| US3299871A | 1967-01-24 | |||
| US3046961A | 1962-07-31 |
Attorney, Agent or Firm:
Yoichiro Shimoda
Previous Patent: CONTROL DEVICE FOR MAIN STEAM PRESSURE OF POWER PLANT
Next Patent: HYDRAULIC TAPPET CYLINDER MADE OF LAYER OF SINTERED HARD ALLOY
Next Patent: HYDRAULIC TAPPET CYLINDER MADE OF LAYER OF SINTERED HARD ALLOY