Numerical Analysis of Combustion and Flow Inside a Small Rotary Engine for Developing an Unmanned Helicopter Chiba University

Format:

Book

Conference/Event

Author/Creator:

YAMADA, Takafumi, author.

Conference Name:

Small Engine Technology Conference & Exposition (2007-10-30 : Nugata, Japan)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Tokyo, JAPAN Society of Automotive Engineers of Japan 2007

Summary:

For a disaster relief and automatic inspections, an unmanned helicopter is strongly expected. To develop this, a very high power density source is required. A Wankel-type rotary engine can be the best candidate for the power source. In this study, the development of a very small rotary engine with a displacement of 30 cc is targeted. In order to improve the combustion efficiency, gas exchange and stable ignition, a multi dimensional simulation inside the combustion chamber was carried out. At first, the effect of volumetric efficiency on the maximum power is mentioned. Secondly, the effect of scavenging efficiency is discussed. Thirdly, a blow off through a plug hole is described. The position of plug hole was found important to reduce the blow off amount. Finally, the effect of combustion speed on the engine performance is predicted. As a result, the proposed design will be tested using a proto-type engine. Also, future subjects to achieve a high power density with a displacement of 30 cc will be solved by the authors' research in progress

Notes:

Vendor supplied data

Publisher Number:

2007-32-0098

Access Restriction:

Restricted for use by site license