The experiments of Ricardo Hydra 140 single-cylinder engine show that steady HCCI combustion can be achieved through the new-design camshafts fixed.

试验表明，所设计的小包角凸轮能够实现稳定压燃燃烧，为开展详细的汽油HCCI燃烧实验研究提供条件。

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All of which has prompted Ricardo, a leading European engine-technology firm based in West Sussex, to develop a clever new way to evaluate and adjust new designs.

ECONOMIST: Car design