专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US4667640A Method for controlling fuel injection for engine 失效
标题翻译：用于控制发动机燃油喷射的方法
公开(公告)号：US4667640A
公开(公告)日：1987-05-26
申请号：US696480
申请日：1985-01-30
申请人： Teruji Sekozawa , Motohisa Funabashi , Makoto Shioya , Michihiko Onari , Hiroatsu Tokuda
发明人： Teruji Sekozawa , Motohisa Funabashi , Makoto Shioya , Michihiko Onari , Hiroatsu Tokuda
IPC分类号： F02D41/04 , F02D41/14 , F02B3/00
CPC分类号： F02D41/047 , F02D41/1401 , F02D2041/141 , F02D2041/1415 , F02D2041/1431 , F02D2041/1433
摘要： Disclosed is a method for controlling fuel injection for an engine, in which, on the basis of a phenomenon that a part of fuel vaporized from a liquid film adhering to a wall surface of a fuel intake manifold remains in the intake manifold in the form of vapor fuel, the quantity of liquid film and the quantity of vapor fuel are estimated by using control parameters such as air mass flowing through a throttle valve, throttle opening, engine speed, air fuel ratio, etc.; the quantity of liquid film and the quantity of vapor fuel at a desired point of time are predicted on the basis of the result of estimation; and the quantity of fuel injection is controlled so as to make the air fuel ratio be a desired air fuel ratio. Further, the quantity of liquid film is estimated in the case where the data as to the air fuel ratio obtained by an O.sub.2 sensor includes an observation delay; a sum of the quantity of fuel vaporized from a liquid film at a desired point of time and the quantity of fuel which does not adhere to a wall surface of an intake manifold is predicted on the basis of the result of the estimation; and the quantity of fuel injection is controlled so as to make the observed air fuel ratio be a desired air fuel ratio on the assumption that the quantity of fuel corresponding to the estimated sum is sucked into a cylinder.
摘要翻译：公开了一种用于控制发动机的燃料喷射的方法，其中，基于从附接到燃料进气歧管的壁表面的液体膜蒸发的燃料的一部分残留在进气歧管中的形式为通过使用诸如流过节流阀的空气质量，节气门开度，发动机转速，空燃比等控制参数来估计蒸气燃料，液膜数量和蒸汽燃料量。根据估计结果预测液膜的数量和蒸气燃料在所需时间点的数量; 并且控制燃料喷射量以使空燃比成为期望的空燃比。此外，在通过O2传感器获得的关于空燃比的数据包括观察延迟的情况下，估计液膜的量; 基于估计结果，预测在期望的时间点从液膜蒸发的燃料量和不粘附到进气歧管的壁面的燃料量的总和; 并且控制燃料喷射量，以便将所述观测到的空燃比设为所期望的空燃比，假设将与所估计的和相对应的燃料量吸入气缸。

IPRDB

热门服务

关于我们

友情链接

联系方式