Nissan says it made breakthrough with engine in decreasing CO2 emissions

by SpeedLux
Nissan IMQ Concept Geneva Motor Show 2019

Nissan Motor said on Friday it has reached a breakthrough in gaining a 50% thermal efficiency with its in-development e-POWER hybrid technology, which could result in a further decline of car CO2 emissions.

This new thermal efficiency level would enhance fuel consumption by 25% over the 40% thermal efficiency level in the upcoming e-POWER engine, the automaker said.

“Nissan’s latest approach to engine development has raised the bar to world-leading levels, accelerating past the current auto industry average range of 40% thermal efficiency, making it possible to even further reduce vehicle CO2 emissions,” the automaker said.

Nissan did not reveal when the e-POWER technology with 50% thermal efficiency would be introduced.

Toshihiro Hirai, senior vice president of the powertrain and electric vehicle engineering division at Nissan, informed reporters on Friday that the automaker is maximising the thermal efficiency of e-POWER in order to decrease CO2 emissions while driving.

The e-POWER, first introduced in Japan in 2016, uses a gasoline engine to charge a battery that powers the automobile.

“It took 50 years to increase thermal efficiency (of conventional engines) from 30% to 40%,” Hirai said.

“But with e-POWER, we can boost it to 50% in several years. That has been the target for the engineering community,” he said, describing that level as the “ultimate, challenging goal”.

To achieve this, the automaker said it strengthened in-cylinder gas flow and ignition, which burns a more diluted air-fuel mixture at a high compression ratio.

“Without building up these fundamental technologies, we are unable to attain carbon neutrality,” said Hirai.

The automaker said last month that all of its recent models in major markets would be electrified by the beginning of the 2030s to achieve carbon neutrality by 2050.

Nissan has also said it expects sales of over one million electrified vehicles per year by the end of fiscal 2023.

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