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McLaren details the 4.0-liter V8 Senna

Megane R.S Video

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

ecoboost_video

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?

News

Acura announces hybrid versions of its MDX SUV

Acura's first-ever hybrid SUV, the 2017 MDX Sport Hybrid, has been unveiled in detail by the OEM.The MDX Sport Hybrid claims more than 30hp more and a 45% higher EPA city fuel economy rating in comparison to the conventionally-powered MDX SH-AWD. The new SUV applies Acura's three-motor 'Sport Hybrid Super Handling-All Wheel Drive' (SH-AWD) system, as first offered in the RLX Sport Hybrid and more recently, the NSX supercar.

The MDX Sport Hybrid powertrain boasts a total system output of 321hp and 289lb ft of torque, making it the most powerful Acura production SUV ever built. EPA fuel economy ratings of 26/ 27/ 27mpg (city/ highway/ combined) are up 8/ 1/ 6mpg over the non-hybrid variant.

A 3.0-liter, 24-valve, SOHC V-6 power plant with i-VTEC valvetrain and selectable idle-stop capability provides the majority of the car's drive, with a peak output of 257hp at 6,300rpm and 218lb ft of torque at 5,000rpm. This is supplemented by three electric motors – a front motor built into the 7DCT, and a rear Twin Motor Unit (TMU). The hybrid powertrain also features several advancements as part of the on-going development of Acura hybrid technology, including improvements in cooling and packaging of the IPU and PCU, as well as increased hybrid battery power density.

The electric SH-AWD system operates independently of the IC engine, as the two rear-mounted electric motors dynamically apportion both positive and negative torque directly to the rear wheels. This system provides for dynamic, immediate and always-on torque vectoring capabilities while eliminating the weight and energy losses associated with a conventional driveshaft and differential mechanism.

16 March 2017


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