Title:
INTAKE SYSTEM FOR INTERNAL, COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JP3675226
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve the output in a high speed area while reducing the ventila tion resistance inside of a collector of an intake system for internal combustion engine, and to lower the radiation noise from a collector outer wall surface.
SOLUTION: A first volume chamber 15 provided at a central part inside of a collector 1 in a V-type internal combustion engine and second volume chambers 16, 17 provided in both sides of the first volume chamber 15 are cut off by valve units 13, 14 in a low and a middle speed areas, and communicated with each other in a high speed area so as to obtain the intake dynamic effect, and volume efficiency is improved so as to improve the output. A heaped projection part 31 is provided so that a collector inner wall part in both sides of frames 25 of the valve unit 13, 14 and the seating surface of a valve element 26 of the frame 25 are smoothly connected to each other. Ventilation resistance is thereby reduced, and rigidity of the collector wall is reinforced so as to lower a radiation noise from the collector outer wall.
Inventors:
Toru Ito
Application Number:
JP14922699A
Publication Date:
July 27, 2005
Filing Date:
May 28, 1999
Export Citation:
Assignee:
Nissan Motor Co., Ltd
International Classes:
F02B27/02; F02B75/22; F02M35/10; F02M35/104; F02M35/116; F02M35/12; (IPC1-7): F02B27/02; F02M35/10; F02M35/104; F02M35/116; F02M35/12
Domestic Patent References:
| JP3010035U | ||||
| JP63038680A | ||||
| JP6341323A | ||||
| JP5099079A |
Attorney, Agent or Firm:
Tomijio Sasashima