发明授权
US07461621B2 Method of starting spark ignition engine without using starter motor
有权
不使用起动马达启动火花点火发动机的方法
- 专利标题: Method of starting spark ignition engine without using starter motor
- 专利标题(中): 不使用起动马达启动火花点火发动机的方法
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申请号: US11533040申请日: 2006-09-19
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公开(公告)号: US07461621B2公开(公告)日: 2008-12-09
- 发明人: Noriyuki Ota , Masahiko Fujimoto , Yasushi Murakami , Keiji Araki , Kazuya Yokota
- 申请人: Noriyuki Ota , Masahiko Fujimoto , Yasushi Murakami , Keiji Araki , Kazuya Yokota
- 申请人地址: JP Hiroshima
- 专利权人: Mazda Motor Corporation
- 当前专利权人: Mazda Motor Corporation
- 当前专利权人地址: JP Hiroshima
- 代理机构: Alleman Hall McCoy Russell & Tuttle LLP
- 优先权: JP2005-276266 20050922; JP2005-286387 20050930; JP2005-287068 20050930; JP2005-287069 20050930
- 主分类号: F02N17/00
- IPC分类号: F02N17/00 ; F02N17/08
摘要:
There is provided a method of starting a spark ignition engine having multiple cylinders. The method comprises supplying air and fuel for restart into a first cylinder before the engine completely stops, and igniting the mixture of the air and the fuel in the first cylinder in response to an engine start request. In accordance with the method, by supplying air and fuel into the first cylinder before the engine completely stops, the mixture of air and fuel in the first cylinder may be homogeneous at the time of the engine start request. Also, there may be less mixture turbulence and combustion may propagate better within the cylinder. These conditions may reduce the rate of combustion in the first cylinder after a start request is initiated. The slower combustion rate may decrease temperature of the combusted gas while the cylinder wall temperature is relatively low because the engine has stopped. As a result, the slower combustion may reduce heat loss in the first cylinder because of the smaller difference between the temperatures of the combusted gas and the cylinder wall. Consequently, more energy may be directed from the first cylinder to the crankshaft, so that the engine restart becomes more reliable.