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HyBoost concept achieving close to Prius-level CO2 emissions; aggressive downsizing with advanced boosting and micro-hybrid system

Green Car Congress

HyBoost achieves this by combining aggressive 50% downsizing of the engine with an electric supercharger for transient low-speed performance, and a micro-hybrid stop-start and energy recuperation systems, Boggs said. Downsizing the 2.0-liter Click to enlarge. —David Boggs. Micro-hybrid market. million units per year by 2020.

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Simulation study finds “Millerizing” the Scuderi split-cycle engine could enable 50% engine downsizing with retention of power and torque, along with reduced fuel consumption

Green Car Congress

Simulation study finds Miller version of Scuderi engine can deliver twice the BMEP as naturally aspirated version, theoretically enabling 50% downsizing while maintaining performance. Applying the Miller cycle to the Scuderi engine (right) entails downsizing of the compression cylinder. Source: Scuderi. Click to enlarge.

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Google and IEEE launch $1M challenge for downsized inverters

Green Car Congress

Teams should also provide clearly indicated sections on what innovations they have used to confront challenges including: the 120 Hz input current/voltage ripple requirement; miniaturization of components for DC­AC conversion; thermal management; and electromagnetic compliance. USABC Electrical and Electronics Technical Team Roadmap (June 2013).

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

Green Car Congress

The company originally described the system in a 2010 SAE paper (2010-01-1222) and at the 2010 World Congress. Enablers for the VEMB system include a concentric camshaft, a blow-down exhaust manifold and a scavenge manifold. Total cost of implementation is much less than $10/1%, he said. and Sisson, J. and Becker, M.,

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CPT presenting two papers at SAE World Congress on SpeedStart and TIGERS for 48V mild hybrid systems

Green Car Congress

Controlled Power Technologies (CPT) will deliver two technical papers at SAE World Congress in April on its SpeedStart torque assist and kinetic energy recovery system ( earlier post ) and TIGERS turbine integrated gas energy recovery system ( earlier post ) for 48V mild hybrid vehicles. Earlier post.) —Nick Pascoe.

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Study Finds Strong Synergy Between Spark Ignition Engine Downsizing and Low-to-Moderate Alcohol Blend Fuels

Green Car Congress

A study by engineers from Mahle Powertrain Ltd and BP found strong synergy between spark ignition (SI) engine downsizing and fuel containing low-to-moderate amounts of alcohol, including ethanol and butanol. The team presented a paper on their work at the recent SAE 2009 World Congress in Detroit. Cairns et al. SAE 2009-01-0138).

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Concept: Downsized and Supercharged Hybrid Pneumatic Engine for 30%+ Reduction in Fuel Consumption

Green Car Congress

Schematic of downsized and supercharged four-stroke hybrid pneumatic spark injection engine. The reduction in fuel consumption is obtained mainly through enabling the effective use of a heavily downsized engine, rather than from regenerative efficiency. The major part of this gain is due to downsizing the engine. Earlier post.).