Patent · US Active

Exhaust valve assembly for a two-stroke internal combustion engine and method for cleaning same

US10113452B2 · kind B2 · utility

3Cited by

34References

20Claims

0Family size

Assignee

BRP-ROTAX GMBH & CO. KG · AT

Inventors

Andreas MATHEIS · Ruhstorf, DE
Markus Doppelbauer · Wels, AT
Martin Schallauer · Wels, AT
Christian Berger · Schwanenstadt, AT
Guenther Roland · Pasching, AT

Key dates

Filing date	Jan 30, 2017
Grant date	Oct 30, 2018
Priority date	—
Expiry date	Mar 31, 2037

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An exhaust valve assembly for a two-stroke internal combustion engine has a valve actuator, and a two-part valve having a primary and secondary valves defining first and second decompression passages respectively. The primary valve is operatively connected to the valve actuator. The primary valve is in first, second and third primary valve positions when the valve actuator is in first, second and third actuator positions respectively. The secondary valve is in a first secondary valve position when the valve actuator is in the first or the second actuator position and in a second secondary valve position when the valve actuator is in the third actuator position. The first and second valve decompression passages fluidly communicate with each other when the valve actuator is in the second actuator position, and are fluidly separate from each other when the valve actuator is the first or the third actuator position.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.