In this paper the relations of operating parameters such as coolant temperature engine speed throttle valve opening and spark advance angle with unburned hydrocarbon emissions due to the presence of combustion chamber deposits in spark ignition engine are investigated both theoretically and experimentally .

本文从实验和理论两个方面来系统地研究火花点火式发动机燃烧 室沉积物处未燃碳氢排放浓度随冷却水温、发动机转速、 节气 门开度和点火提前角等运转参数的变化规律。

At lesser throttle positions the flow of fluid to the hydraulic chamber is reduced and the valve opens only part way .

能够以更少的 节气 门位置、液压 室的液体流动的降低，而只有部分通路阀门开启。

Higher preburner pressure during combustion chamber ignition stage is necessary at the same time acceleration of chamber pressure should be limited by setting throttle on combustion chamber fuel supply line .

燃烧室点火时预燃室应有较高的压力，同时应通过 推力 室燃料路的 节流来减小燃烧 室压力的上升速率；

Such nonlinear characteristic as flow through a throttle and the thermodynamic process in a chamber make it difficult to design a controller for pneumatic servo system .

为提高控制系统的鲁棒性，增强干扰 抑制能力，提出了适用于 气压伺服系统的自抗 扰控制器方案，并讨论了控制参数的整定。