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BorgWarner suggests Valve-Event Modulated Boost system can offer 6-17% fuel economy benefit over already downsized and turbocharged engines

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The VEMB system uses a concentric camshaft, blow-down manifold and scavenge manifold to separate the exhaust event into two phases: high-energy blow-down to the turbo without pumping losses, and high-hydrocarbon scavenge to the EGR system. Source: Borgwarner. Click to enlarge. The turbo will always be spinning.

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2019 Ram drops weight, gains 48V eTorque mild hybrid system

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Cooling air is drawn from inside the truck and vented via the built-in cabin exhausters. The newest Pentastar V-6’s advanced technologies, such as wide-range variable valve timing and two-step variable valve lift, deliver an optimized blend of power and fuel economy, based on the driver’s demand. The Pentastar V-6 uses an 11.3:1

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Ford Using Ti-VCT in New 5.0L V8 for Mustang GT

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liter V-8 Mustang GT deliver projected fuel economy of up to 25 mpg US on the highway cycle—better than the pervious model—despite its performance. Ti-VCT provides extremely precise variable—yet independent—control of timing for intake and exhaust valves. Fuel economy also is aided by engineering a lightweight powertrain.

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2014 Jeep Grand Cherokee offers new 3.0L EcoDiesel V-6 and 8-speed for 30 mpg highway

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Among the many features of the new 2014 Jeep Grand Cherokee—introduced at the Detroit Auto Show—two in particular contribute to significantly improved fuel economy and driving performance: an optional new 3.0-liter Full-time 4x4 models have fuel economy figures of 20 city and 28 highway. Click to enlarge.

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Jeep introduces 2018 Wrangler with mild hybrid, diesel options; plug-in hybrid version in 2020

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The eTorque system improves fuel economy, launch performance, and driver comfort during start/stop operations. The eTorque system’s hybrid functions include auto stop/start, electric power assist, extended fuel shut-off, transmission shift management, intelligent battery charging and regenerative braking. The FCA US 3.6-liter

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DARPA awards LiquidPiston $2.5M to advance further X4 rotary engine prototype

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LiquidPiston will be developing its X4 test rig: a prototype 30 kW diesel X-engine, with targeted brake specific fuel consumption (BSFC) of 186 g/kWh (better fuel efficiency than heavy duty truck engines, and twice the fuel economy of a gasoline engine over a typical drive cycle). Shkolnik et al. 2014) Click to enlarge.

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Audi banking on Gen 2 3.0L TDI diesel for US sales; calls for a “fair shot” for diesel

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Do they receive HOV access for their improved fuel economy and ultra low emissions? In fact in 6 of the states, diesel fuel is penalized with additional state taxes. So diesel fuel gets taxed twice or penalized twice at the federal and state level. Changes in the exhaust manifolds and turbo from Gen 1 to Gen 2.

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