US 8,051,846 B2Granted

Two-cycle engine

AssigneeHusqvarna Zenoah Co., Ltd.

InventorYuu Sugishita

Life of this patent

Estimating the term…

Loading patent…

Abstract

Through holes formed on an atomization pipe can prevent fuel adhering on inner walls of the through holes from escaping. In addition, when fuel adhering on an inner circumferential surface of the atomization pipe flows toward a downstream side, the fuel enters the through holes. Thus, the fuel can be confined therein. Furthermore, an absorbing member can absorb the fuel that has adhered to a downstream inner wall of the atomization pipe and flows toward the downstream side. Moreover, a periphery of the intake passage hole of a gasket protrudes from the inner wall, so that flow of the fuel that the absorbing member fails to absorb toward the downstream side can be blocked. Accordingly, a rapid increase in the amount of fuel flowing into the engine body can be reliably prevented. Therefore, fluctuation in the number of revolutions of the engine can be sufficiently restrained.

Claims4

Dependent claims

A two-cycle engine comprising:

a carburetor,
an engine body, and
an inlet pipe in which an inlet pipe intake passage that communicates the carburetor and the engine body is formed, wherein
the inlet pipe includes an inlet pipe body in which the inlet pipe intake passage is formed, an atomization pipe fitted with the inlet pipe intake passage, an absorbing ring fitted with the inlet pipe intake passage, and a gasket interposed between the engine body and the inlet pipe body,
the atomization pipe is shaped in a bottomless basket and having a plurality of through holes formed on an outer circumferential wall thereof,
the absorbing ring includes a ring-shaped ring body and an absorbing member provided to an outer circumference of the ring body and abutting to an inner wall of the inlet pipe intake passage, and
the gasket is provided with an intake passage hole whose opening area is smaller than an opening area of the inlet pipe intake passage.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/245,827Filed 6 Oct 2008
Priority: JP 2007-21076513 Aug 2007
Published: US 2009/0095268 A116 Apr 2009
Granted: 8 Nov 2011
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

F02M 29/14
Apparatus for re-atomising condensed fuel or homogenising fuel-air mixture: re-atomising or homogenising being effected by unevenness of internal…
F02B 2075/025
Having less than six strokes per cycle: two
F02M
Supplying combustion engines in general with combustible mixtures or constituents thereof
F02B
Internal-combustion piston engines