China Yuchai International Ltd. Announces Hybrid Engine Developments

China Yuchai International Ltd. announced that its subsidiary, Guangxi Yuchai Machinery Company Limited (GYMCL), is developing two new alternative energy diesel engines. One of them is a new dual fuel engine that utilizes a natural gas and diesel fuel mix which GYMCL is jointly developing with a Shenzhen-based company specializing in dual fuel technology. The new natural gas/diesel engine allows for the engine to be electronically injected and to run on either a mixture of natural gas and diesel fuel or on diesel fuel only. The results of the combination are increased diesel fuel efficiency and lower emissions. It is specifically intended for areas with abundant natural gas supplies and is especially applicable to the municipal bus market in China. The first phase of the development of the dual natural gas and diesel engine has been completed and initial units have been supplied to Zhengzhou Yutong Bus Co., Ltd. The other alternative energy diesel engine is an ISG electric/diesel hybrid engine developed through GYMCL’s internal research and development efforts. Development of an ISG electric/diesel engine began in 2006 and this is the first ISG electric/diesel engine to go into production and is expected to reduce fuel consumption by 20% with improved performance compared with standard diesel engines. (June 23, 2009)