throttle-flow ratio

A nearly constant air-fuel ratio is maintained by the main metering system from part-to-wide-open throttle.

从节气门部分开启到全部开启,主计量系统保证了空燃混合比几乎恒定.

An ejector should be adopted in some low cooling-capacity refrigerating systems instead of a throttle valve to recover some high-pressure potential power and reduce the irreversible energy loss of throttle process for improving the energy efficiency ratio ( EER) of the CO_2 system.

为减小CO2跨临界循环系统节流部分的膨胀功损失，提高系统性能，可在小型制冷系统中采用喷射器代替节流阀，部分回收工质从高压到低压过程的膨胀功。

Firstly, the CNG engine torque control theory is introduced, and the relationship between the engine output torque and the three control parameters: the spark advance angle, the air-fuel ratio and the throttle opening, is derivated.

首先，研究天然气发动机转矩控制理论，推导点火提前角、空燃比和节气门开度三个控制参数与转矩之间的关系。

Based on 4105Q-diesel, single-fuel natural gas engine is developed with the removal of diesel injection system, proportion mixture device induction tract, throttle governor, and ignition system increased, and compression ratio reduced.

基于4105Q型柴油机为原型机开发的单燃料天然气发动机，去掉柴油机燃油喷射系统，增加比例式混合器供气系统、节流阀体、点火系统、降低压缩比。

The engagement quality is mainly influenced by throttle angle, engine state, gear ratio and load.

经分析,油门开度 、 发动机状况 、 档位、载荷等是影响接合品质的主要因素.