Title:
FOUR-CYCLE MULTI-CYLINDER ENGINE
Document Type and Number:
Japanese Patent JP3916313
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a four-cycle multi-cylinder engine wherein even in a low/ intermediate load region, combustion of a mixture is stabilized, fuel consumption is improved by an increase of EGR gas, and NOx is reduced, and also dispersion of a fuel injection amount between cylinders can be eliminated.
SOLUTION: In a four-cycle multi-cylinder engine formed by each providing a throttle valve 22 in an intake passage 21 drawn out from a surge tank 20 to be connected to each cylinder, a location in the vicinity of an intake valve of the adjacent intake passage 21 is connected by an inter-cylinder communication path 29, sub-intake passage 26, 28 branching from the surge tank 20 to bypass the throttle valve 22 is connected to the inter-cylinder communication path 29, also in the halfway of the sub-intake passages 26, 28, and a sub-surge tank 25 and an idle speed control valve(ISCV) 27 are provided.
Inventors:
Hiromitsu Matsumoto
Application Number:
JP548498A
Publication Date:
May 16, 2007
Filing Date:
January 14, 1998
Export Citation:
Assignee:
YAMAHA HATSUDOKI KABUSHIKI KAISHA
International Classes:
F02B31/00; F02B31/02; F02D13/02; F02D41/02; F02M25/07; F02M35/10; F02M35/104; (IPC1-7): F02B31/00; F02B31/02; F02D13/02; F02D41/02; F02M25/07; F02M35/10
Domestic Patent References:
| JP53112329A | ||||
| JP63168223U | ||||
| JP56029022A | ||||
| JP6093866A | ||||
| JP6093867A |
Attorney, Agent or Firm:
Haruka International Patent Office
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