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    • 71. 发明申请
    • SYSTEM, SENSOR COMBINATION AND METHOD FOR REGULATING, DETECTING AS WELL AS DECIDING CURRENT FUEL-AIR RATIOS IN COMBUSTIONS ENGINES
    • 系统,传感器组合和方法,用于调节,检测,以及如何决定燃料发动机中的电流 - 燃油比
    • WO99019611A1
    • 1999-04-22
    • PCT/SE1998/001828
    • 1998-10-09
    • G01N27/416F02D41/14F02D41/36F02D41/38F01N9/00G01N27/407
    • F02D41/1459F02D41/1456F02D41/3809
    • The present invention concerns a system for regulating the fuel-air mixture in a multi-cylinder internal combustion engine (1), a sensor combination for a similar system, and a process for determining the mixture of fuel and air in an internal combustion engine. Only by using a single sensor arranged in the exhaust gas piping after the exhaust gases from a multi-cylinder internal combustion engine have been combined, can a cylinder by cylinder regulation of the fuel-air mixture take place. The present invention utilises a sensor (10) with a binary output signal, i.e. that provides a signal switching between two signal levels. With a rapid-acting sensor that is sensitive to HC can be determined for each individual combustion event whether the combustion has taken place with an excess of fuel, i.e. a net reducing mixture in the exhaust gases, and the relative excess amount of fuel. The relative excess amount of fuel is proportional to the state, i.e. the pulse width, of the signal level that is indicating the level of the excess fuel. The present invention permits the fuel supply to each individual cylinder to be regulated more closely, so that stoichiometric combustion can be maintained during continuous operation, whether the operation is under constant load or during transients.
    • 本发明涉及一种用于调节多缸内燃机(1)中的燃料 - 空气混合物的系统,用于类似系统的传感器组合以及用于确定内燃机中的燃料和空气的混合的方法。 只有在来自多气缸内燃机的废气已经组合之后,通过使用布置在废气管道中的单个传感器,才能通过汽缸调节燃料 - 空气混合物来实现。 本发明利用具有二进制输出信号的传感器(10),即提供两个信号电平之间的信号切换。 对于每个单独的燃烧事件,可以确定对HC敏感的快速作用的传感器,无论燃烧是否已经与过量的燃料,即废气中的净还原混合物以及相对过量的燃料一起发生。 相对过量的燃料与指示多余燃料的水平的信号电平的状态即脉冲宽度成比例。 本发明允许更加紧密地调节对各个气缸的燃料供应,使得在连续运行期间,无论操作是处于恒定负载还是在瞬变期间,可以保持化学计量燃烧。