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McLaren details the 4.0-liter V8 Senna

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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.

Ford Ranger returns to the USA with a 2.3-liter EcoBoost engine

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Fitted with the 2.3-liter EcoBoost engine taken from the Focus RS, the 2019 Ford Ranger marks the OEM’s return to America’s mid-size truck segment. Paired with a 10-speed automatic transmission, Ford promises torque comparable to a V6 and the efficiency of a four-cylinder.


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The next issue of Engine Technology International will bring you an extended HCCI technology feature, but will this innovative powertrain development ever jump from concept to mainstream production?

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GM’s new diesel pickups get class-leading EPA rating

General Motors has revealed two new diesel pickups, the GMC Canyon and Chevrolet Colorado, which it claims offer segment-leading fuel consumption.

 

Both trucks have been rated by the EPA at 25mpg (9.4l/100km) combined in two-wheel-drive form, while the four-wheel drive models are rated at 23mpg (10.2l/100km).

Both trucks are powered by the company’s 2.8-liter Thailand-built Duramax engine, which GM says makes the trucks the cleanest it has ever produced thanks to a cooled exhaust gas recirculation system.

The inline-four features a high-pressure common rail injection system and dual-overhead camshaft. Bore and stroke are 94mm and 100mm respectively, while the compression ratio is 16.5:1. 

Above: The Chevrolet Colorado

GM says its variable-geometry turbocharger helps optimize power and efficiency across the rev band and a balancer shaft contributes to smoothness. Ceramic glowplugs are fitted to improve overall efficiency.

Additionally, Canyon and Colorado diesel models feature a diesel exhaust brake that has been designed to reduce brake wear by using engine compression to slow the truck down, particularly when traveling downhill.

Above: The GMC Canyon

The Duramax’s power and torque are rated 184ps and 500Nm, and the trucks are paired with GM’s Hydra-Matic 6L50 six-speed automatic transmission, which uses a centrifugal pendulum vibration absorber in the torque converter to reduce powertrain noise and vibration.

GM is also keen to note that both trucks have received an EPA certificate of conformity, following the agency’s extensive emissions and fuel consumption testing. The Duramax engine has been designed to run up to 20% biodiesel.

November 11, 2015

 

11 November 2015

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