三缸内燃式水泵的最佳经济工作区

在某些电力系统配备不完善地区，以内燃机作为动力驱动水泵实施农业灌溉是常见的形式，该种结构形式存在功率传递路线长、效率低及占用空间大等问题。内燃式水泵（ICWP）集往复式内燃机与柱塞泵于一体，实现了热能向液压能的直接转换，提高了系统效率，而且使结构相对紧凑。该文阐述了三缸ICWP的工作原理，建立了系统的动力学模型，在此基础上，对系统燃油消耗率进行了仿真，得到了系统的最佳经济工作区，该区域油门开度大于35%，转速为1 600～1 800 r/min。计算结果经过试验验证，证明计算模型合理可行。该模型的建立为三缸ICWP结构的进一步研究奠定了基础。

Best economic working area of three-cylinder internal combustion water pump

In the area without sufficient electrical power system, internal combustion engines driving water pump system is popularly used in the agricultural irrigation, but it has disadvantages of long way power transmission, low efficiency and large space occupation. Integrating reciprocating combustion engine and plunger pump, internal combustion water pump(ICWP) has transferred the heat energy directly to the hydraulic pressure energy, its efficiency was improved and its configuration became compact. Working principle of the three-cylinder ICWP was expounded and its dynamics model was set up. On the basis of the above, the specific fuel consumption was simulated to find the best working area, and the area's throttle opening was more than 35% and rotational velocity was 1 600-1 800 r/min. The result has been tested by experiments, and the feasibility of the computation model has been proved. Establishment of the model lays the foundation of further research on the structure of the three-cylinder ICWP.