Title:
ENGINE UNIT
Document Type and Number:
WIPO Patent Application WO/2019/225564
Kind Code:
A1
Abstract:
An engine unit 1 has one air intake 12, one intake valve 22, and one injector 23 with respect to one combustion chamber 11. In a case in which a fuel is injected from the injector 23 into a space where there is only atmosphere, with the injector 23 not mounted on the engine unit, the fuel in a first plane S1 that intersects the directions of injection of a plurality of fuel droplets exists within one circle along the edge of the one circle, at a certain point immediately after the injection. The fuel is injected from a plurality of injection holes, during an intake stroke, such that the concentration of the fuel in a first area A1 that is located along the edge of the circle in the first plane S1 becomes higher than the concentration of the fuel in a second area A2 that is located adjacent to the entire inner edge of the first area A1.
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Inventors:
SASAKI TAKESHI (JP)
Application Number:
PCT/JP2019/019994
Publication Date:
November 28, 2019
Filing Date:
May 21, 2019
Export Citation:
Assignee:
YAMAHA MOTOR CO LTD (JP)
International Classes:
F02M69/04; F02D9/02; F02M61/14; F02M61/18; F02M69/00
Foreign References:
| JP2018003810A | 2018-01-11 | |||
| JPH07259700A | 1995-10-09 | |||
| JPS5484129A | 1979-07-04 | |||
| JP2007231924A | 2007-09-13 | |||
| JP2012154209A | 2012-08-16 |
Attorney, Agent or Firm:
KAJI, SUHARA & ASSOCIATES (JP)
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