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Jaguar details the technology behind the I-Pace

Jaguar I-Pace

Ahead of it public debut at the Geneva International Motor Show next month, McLaren has released further information on the Senna. Fitted with a 4.0-liter twin-turbocharged V8 – McLaren’s most powerful IC engine ever produced for a road car – the limited release hypercar will develop 800ps and 800Nm.

Toyota details its new Dynamic Force engine

Megane R.S Video

The Japanese OEM has revealed its all-new powertrain system which is set to be installed in 80% of Toyota vehicles by 2023. Based on the Toyota New Global Architecture, the technology will feature a new continuously variable transmission (CVT), a 6-speed manual transmission and a 2.0-liter hybridized engine unit.

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As OEMs continue to announce plans to end production of diesel engines, Mercedes-Benz has unveiled its new diesel PHEV C-Class at the Geneva Motor Show. Will this powertrain development give TDI a new lease of life? 


Eaton develops exhaust gas recirculation technology

Automotive supplier Eaton has detailed its new Internal Exhaust Gas Recirculation (iEGR) technology.

The company says the development will enable auto makers to meet stringent regulations on diesel engine emissions by providing direct control over the thermal management of the exhaust system.

Diesel exhaust leaves the engine following combustion with pollutants nitrogen oxides (NOx) and particulate matter (PM). The particulate matter is then trapped in a diesel particulate filter (DPF) and diesel exhaust fluid is sprayed into the exhaust, where it hydrolyzes into ammonia (NH3).

From there, ammonia and nitrogen oxides travel to a selective catalytic reduction (SCR) system where a reaction turns them into harmless nitrogen and water. In order for the reaction to occur, however, temperatures of 250-500°C are needed.

EGR is used to generate hotter exhaust gas, and therefore heat the catalyst to the proper operating temperature, by slightly opening one exhaust valve during the piston’s intake stroke to draw hot exhaust gas directly from the exhaust manifold into the cylinder.

Eaton’s iEGR technology uses a switchable roller rocker arm on each cylinder that can be electro-mechanically actuated.

Systems that rely on hydraulic pressure to provide EGR functionality take longer to generate heat, whereas the Eaton developed system is claimed to provide the needed heat nearly instantaneously, helping to eliminate emissions during cold starts.

Written by Sam Petters

21 February 2018


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