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美国一公司生产了一种露天矿用200吨自卸车,型号为莱克特拉·霍尔M200(图1)。 M200自卸车装用铁路内燃机车用的EMD8缸柴油机,功率1650马力(转速为900转/分),缸径×冲程为230.2毫米(9~1/_(16)时)×254毫米(10时),排量为85升(5160时~3),扭矩为1330公斤米(9625呎·磅)。发动机比油耗大约为170克(0.375磅)/马力小时。大修前的使用寿命予计为15000～20000小时。发动机重量占汽车满载重量的3.5％。该发动机的压力、活塞速度
A U.S. company has produced a 200-ton dump truck for open-pit mining called the Lekterla Hall M200 (Figure 1). The M200 dump truck is equipped with an EMD8 cylinder diesel engine for railway diesel locomotives and has a power of 1650 hp at 900 rpm with a bore × 230.2 mm (9-1 / _ (16)) × 254 mm (10 h) Displacement of 85 liters (5160 ~ 3), the torque of 1330 kilograms of rice (9625 feet · pounds). Engine fuel consumption is about 170 grams (0.375 pounds) per horsepower hour. The service life before overhaul is counted as 15000 ~ 20000 hours. Engine weight accounted for 3.5% of the full load of the car. The pressure of the engine, piston speed