论文部分内容阅读
工程机械由于负荷变化很大,所以柴油机常用全程调速器,以满足作业的各种工况。但是,由于各种工程机械传动系结构和作业方式不同,因此对喷油泵调速器总成的调校也有不同要求。本文以装载机、推土机和挖掘机为例说明其调校特点。 一、怠速转速和怠速油量的确定 一般汽车和拖拉机喷油泵凸轮轴怠速转速为250r/min,怠速油量为4～8mL/200次,仅用于克服柴油机低速内部阻力。工程机械均有各种功能的液压系统,柴油机的怠速转速和油量应该保证所有油泵能够吸上
Construction machinery due to the load changes greatly, so the diesel engine speed governor used to meet the various operating conditions. However, due to the different construction machinery drive train structure and mode of operation, so the fuel pump governor assembly calibration also have different requirements. In this paper, loader, bulldozer and excavator as an example to illustrate the adjustment characteristics. First, the idle speed and idle oil to determine the general The car and tractor fuel injection pump camshaft idle speed of 250r / min, idle oil volume of 4 ~ 8mL / 200 times, only to overcome the diesel engine internal resistance at low speed. Construction machinery has a variety of functions of the hydraulic system, the engine idling speed and fuel oil should ensure that all pump suction