| 摘要 |
A method for use in generating power in an internal combustion engine includes controlling a flow of a gas having an initial temperature and an initial pressure to a combustion chamber of the engine by a controller through an intake mechanism to provide a first mass of the gas to the chamber. The combustion chamber is expanded from a minimum volume to a maximum volume in an intake stroke. The maximum volume of the chamber exceeds a maximum compression volume of the chamber. The first mass of the gas in the chamber has a first pressure and a first temperature at the maximum compression volume. The chamber is reduced to the compression volume from the maximum volume in a compression stroke. The compression volume is about a volume of the chamber such that the first mass of the gas at the first pressure and the first temperature in the chamber is less than a maximum mass detonating with a fuel by the end of the compression stroke in a gasoline engine. In the case of a diesel engine, the compression volume is about a volume of the chamber such that the first mass of the gas at the first pressure and the first temperature in the chamber is greater than a minimum mass self-igniting with a fuel by the end of the compression stroke. The expansion of the chamber from the compression volume to the maximum volume during the intake stroke and the compression of the chamber to the compression volume during the compression stroke includes a process which is about adiabatic and about reversible. The gas has a second pressure and a second temperature during the process which are lower than the initial temperature and the initial pressure. A mixture of the gas and the fuel in the chamber is ignited to expand the chamber from the minimum volume to the maximum volume in a power stroke. The chamber is reduced to the minimum volume from the maximum volume in an exhaust stroke and exhaust gas and burned fuel are exhausted resulting from the igniting into a surrounding ambient environment. The chamber is expanded from the minimum volume to the maximum volume in a next intake stroke and the flow of the gas is controlled to provide the first mass of the gas to the chamber during the next intake stroke.
|
