The next generation of petrol engines will offer the same fuel economy as hybrids without the extra weight and cost. So say engineers at US technology company Delphi, who’ve worked out how to incorporate the direct-injection method of ignition used in diesels into petrol engines.
And the potential benefit is staggering. Harry Husted, Delphi’s chief engineer for advanced powertrain development, told Auto Express: “The results of initial simulation work show this technology could improve engine efficiency by up to 50 per cent.” In conventional petrol engines, a spark ignites the mixture of fuel and air.
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