Toyota to spread Camry’s engine tech across models

Toyota to spread Camry’s engine tech across models. Toyota is overhauling its engines to boost fuel economy, cut emissions and increase performance.

But unlike other automakers, Toyota does not plan to reduce engine size, or strap on turbochargers across the board.

Toyota Motor North America’s powertrain executive programme manager for advanced planning and research, Ben Schlimme, said eventually, all of Toyota’s engines would get the same technology that debuted in the redesigned 2018 Camry.

The Camry’s new 2.5-litre four-cylinder engine, called Dynamic Force is rated at 206hp and gives Toyota’s top-selling sedan an EPA rating of 41mpg on the highway.

Toyota didn’t reduce the size of the Camry’s engine — it was 2.5 litres for 2017. Instead, engineers worked to improve engine efficiency in four main areas: friction reduction, exhaust flow, cooling, and in the intake system.

As a result, the 2.5-litre engine has increased its thermal efficiency — the rate at which fuel is converted to work — to 40 per cent. Few engines have attained that rate.

Schlimme highlighted the engine’s intake system as a key feature of the Dynamic Force engine strategy.

By changing the angle of the intake valve, widening the angle between the intake and exhaust valve, using modified pistons and laser cladded valve seats, the air/fuel mixture tumbles into the cylinder in a swirling motion.