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一、PT喷油器在发动机上的调整 HD—180汽车的孔明斯发动机配有PT燃油系统,其PT喷油器(图1)的功用与一般常见柴油机燃油系喷油器的功用有很大不同之处,即它除了对燃油进化雾化外,还要使燃油在此产生高压(可达1000公斤/厘米~2左右),并根据PT泵供给的压力对喷入气缸内的燃油进行计量,因此,PT喷油器除了在专用的试验台上对其喷油量进行检查校准外,在往发动机上装配时还必须按要求进行调整。否则,不仅会使喷油量达不到规定,而且还可能使喷油器和有关传动零件造成损坏。 PT喷油器的驱动机构如图2所示。喷油器在发动机上的调整主要是保证在喷油结束
First, the PT injector on the engine adjustment The engine of the HD-180 Chrysmin engine is equipped with PT fuel system, the function of its PT injector (Figure 1) and the common diesel fuel injector has a very large The difference is that in addition to its evolution of atomization of fuel, but also make the fuel in this high pressure (up to 1000 kg / cm ~ 2 or so), and according to the PT pump pressure injected into the cylinder fuel metering , Therefore, PT injector in addition to its dedicated test bench to check the fuel injection quantity, in the assembly on the engine must also be adjusted as required. Otherwise, not only will the fuel injection amount be less than specified, but it may also cause damage to the fuel injector and related drive components. PT injector drive mechanism shown in Figure 2. Injector engine adjustment is mainly guaranteed at the end of the fuel injection