美国普里汽车研究公司研制成功世界上第一台大马力塑料发动机,经长时间运转,证实其各项性能达到设计要求。这台发动机在9,500转/分下空载功率可达320马力。发动机容量2升,四缸,自重168磅,比传统的同类型金属发动机轻200磅。发动机的材料结构是:树脂60磅,增强石墨纤维40磅,金属68磅。由于发动机的零件重量显著减轻,同钢制零件相比,发动机的惯性载荷减少了60％,在高转速下可输出更大的功率。该发动机中,许多小型零件如连杆、挺杆、气门弹簧座、正时齿轮、活塞和活塞销等均采用加强石墨树脂注塑制成。发动机气缸体、气缸盖、油底壳采用高性能石墨纤 The United States Puri Automotive Research Corporation successfully developed the world’s first large horsepower plastic engine, after a long run, confirmed its performance to meet the design requirements. This engine can deliver 320 horsepower at 9,500 rpm. Engine capacity of 2 liters, four-cylinder, weight 168 pounds, 200 pounds lighter than the traditional type of metal engine. The material structure of the engine is: 60 pounds of resin, reinforced graphite fiber 40 pounds, 68 pounds of metal. Due to the significantly reduced weight of the engine parts, the engine’s inertial load is reduced by 60% compared to steel parts, allowing greater output at high speeds. The engine, many small parts such as connecting rod, tappet, valve spring seat, timing gear, piston and piston pin are made of reinforced graphite resin injection. Engine cylinder block, cylinder head, oil pan using high-performance graphite fiber