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近来发现,不少东风-12型手扶拖拉机上都挂着一个瓶子,用塑料管将喷油器的回油引进瓶子内。鉴于这种情况,1985年后,陆续有些厂家将喷油器回油管接到柴油滤清器上,有的还增设了回油单向阀。这样虽然解决了喷油器的回油不从进气管进入气缸的问题,但当喷油器针阀偶件磨损后,气缸内的压缩气体就从喷油器小1.柴油箱 2.喷油泵 3.柴油滤清器4.喷油器 5.改进的油管孔进入回油管和柴油滤清器,造成油路气阻。加之回油管太细,频繁
Recently found that many Dongfeng -12 type walking tractor are hung with a bottle, the plastic tube will be injected into the bottle into the fuel injector. In view of this situation, after 1985, one after another some manufacturers will be connected to the fuel injector back to the diesel filter, and some also added a return valve. Although this solves the problem that the oil return of the injector does not enter the cylinder from the intake pipe, the compressed gas in the cylinder is small from the injector when the injector needle and valve couple wear. 1. The diesel fuel tank 2. The fuel injection pump 3. Diesel filter 4. Injector 5. Improved tubing hole into the return pipe and diesel filter, resulting in air resistance. Combined with the return pipe too thin, frequent