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在内燃机车底架下边两转向架之间备有储存燃油用的燃油箱。燃油从那里用泵经过吸油装置送入柴油机内,同时燃油也经过这个吸油装置流回燃油箱。大多数干线内燃机车采用批量生产的吸油装置,如图1所示。燃油从燃油箱1用燃油输送泵沿吸油管3吸出,被送入柴油机燃油总管内。未燃烧的燃油在柴油机内预热后沿回油管流回燃油箱1,与冷燃油混合,再送入柴油机内。吸油管和回油管装在防护套筒2内。这样一种吸油装置相当有效且可靠,但是吸油管的端面在燃油箱底的上方布置过高,造
Between the two bogies under the chassis of the diesel locomotive, there is a fuel tank for storing fuel. From there, the oil is pumped into the diesel engine via the oil sump and the fuel is also returned to the fuel tank via this oil sump. Most mainline diesel locomotives use mass produced oil absorption devices, as shown in Figure 1. Fuel is drawn from the fuel tank 1 through the oil suction pipe 3 by the fuel delivery pump and fed into the diesel fuel manifold. Unburned fuel in the diesel engine preheated along the return pipe back to the fuel tank 1, mixed with cold fuel, and then sent to the diesel engine. Suction pipe and return pipe installed in the protective sleeve 2. Such a suction device is quite efficient and reliable, but the end face of the suction pipe is arranged too high above the bottom of the fuel tank, so that