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    • 1. 发明授权
    • Control method for a fuel injection engine
    • 燃油喷射发动机的控制方法
    • US4939658A
    • 1990-07-03
    • US235809
    • 1988-08-19
    • Teruji SekozawaMakoto ShioyaMotohisa FunabashiMikihiko OnariMasami Shida
    • Teruji SekozawaMakoto ShioyaMotohisa FunabashiMikihiko OnariMasami Shida
    • F02D41/04
    • F02D41/047
    • The fuel injection quantity required for maintaining the air-fuel ratio of the mixture supplied to each cylinder of an engine at a desired value is determined by a deposition rate X at which injected fuel deposits and forms a film mass on an intake manifold wall of the engine and a vaporization rate 1/.tau. at which the film mass vaporizes from the manifold wall, a current film mass quantity M.sub.f determined from the calculated X and l/.tau. and the fuel quantity by the preceding injection, a desired fuel quantity Q.sub.a /(A/F) to be supplied air-fuel ratio A/F in accordance with the following equation ##EQU1## an air-fuel ratio feedback correction factor .gamma. aiming at a stoichiometric air-fuel ratio based on a signal generated by an O.sub.2 sensor is calculated and an actual quantity of fuel corresponding to G.sub.f .multidot..gamma. is injected. A film mass quantity in a current computing cycle is based on the film mass quantity calculated during the previous computing cycle.
    • 将供应到发动机的每个气缸的混合物的空燃比保持在期望值所需的燃料喷射量由沉积速率X确定,喷射的燃料在其上沉积并在其的进气歧管壁上形成膜块 发动机和膜质量从歧管壁蒸发的汽化速率1 / tau,根据计算的X和l / tau确定的当前膜质量Mf和通过先前注射的燃料量,期望燃料量Qa /( A / F)根据以下等式提供空燃比A / F,基于由O 2传感器产生的信号,基于化学计量空燃比的空燃比反馈校正因子γ是 计算出与Gfxγ对应的实际燃料量。 当前计算周期中的胶片质量数量是基于在之前的计算周期中计算出的胶片质量。