天然气掺氢发动机试验用混合气配比系统研制

Development of Hydrogen-natural Gas Fueling Supply System on Test Bench for HCNG Engine Research

为满足天然气掺氢发动机试验要求,开发应用于发动机台架试验的定掺氢比混合气配制系统。首先对定压配比系统结构组成及误差进行了分析,提出了适合天然气掺氢发动机试验用的在线混合系统,并对其组成、掺氢比控制方法及系统误差进行了分析,证明该系统能够满足发动机掺氢比试验要求。

For the demand of Hydrogen blend natural gas engine development, the hydrogen-natural gas fueling supply system suit for the engine test bench is developed to achieve the constant hydrogen blending ratio. In this paper, after introducing the configuration of the constant-pressure mixing system and analyzing its accuracy, an on-board hydrogen blending natural gas supplying system is put forward. The strategy for hydrogen blend ratio in mixture control and its controlling precision are both analyzed. It was proved that the on-board hydrogen blending natural gas fueling supply system is able to achieve the demand of the engine test bench on studying of HCNG engine.