China builds world's first diesel engine. — Wechai PowerChinese company Weichai Power made history by introducing the first diesel engine ever with an intrinsic thermal efficiency of 53.09%.Engineers and scientists have worked to increase the thermal efficiency of diesel internal combustion...source https://www.thenews.com.pk/latest/1181190-worlds-first-diesel-engine-with-5303-thermal-efficiency-is-out
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