Title:
超膨張4行程内燃機関
Document Type and Number:
Japanese Patent JP2008500481
Kind Code:
A
Abstract:
An ultra-expansion four-stroke internal combustion engine, includes a cylinder (1) and a piston (2), wherein the compression degree of the admission space (V2) that satisfies the power requirement is maintained at 1.8-5Mpa at the end of compression stroke to form the condition of increasing combustion temperature and pressure; According to an ultra expansion ratio that can be achieved by the effective working pressure, the working volume (V) of cylinder is designed to be larger than the admission space (V2) , so that the heat energy remained after constant volume expansion working of the combustion gas may be exploited for further expanding under adiabatic condition to form the ultra-expansion working condition; Several cooling water jacket (6) are arranged on the combustion chamber (5) and the upper part of the cylinder (1), while no cooling water jacket is equipped at the lower part of the cylinder (1) and a heat-insulating means (7) is applied thereto, thereby avoiding the heat loss in the process of the ultra-expansion working to improve the effect of ultra-expansion working; the diameter of the intake valve (3) is reduced and the diameter of the exhaust valve (4) is increased to decrease the exhaust advance angle and enhance the effect of ultra-expansion. The invention can increase the heat efficiency significantly, reduce the fuel consumption and reduce the environment contamination.
Inventors:
Yang Increasing interest
Application Number:
JP2007513659A
Publication Date:
January 10, 2008
Filing Date:
May 20, 2005
Export Citation:
Assignee:
Yang Increasing interest
International Classes:
F02D15/04; F02B19/06; F02B23/00; F02B41/00; F02B41/04; F02B75/02; F02F1/02; F02F1/18
Attorney, Agent or Firm:
Shunichiro Suzuki
Koji Makimura
Yoshiko Yamoto
Koji Makimura
Yoshiko Yamoto