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Bosch Promotes Clean Diesel Hybrids

May 22, 2012 in Hybrids by Rich Piellisch  |  No Comments

Robert Bosch, one of the world’s largest automotive suppliers, known for its dominance in the development, engineering and production of high-precision diesel knowhow, is here touting its diesel hybrid-electric vehicle technology.

“I want to advertise the diesel engine as the way to go to reach very high fuel efficiencies,” Andreas Hoyler told F&F. Diesel is real technology that’s here today, he says.

Volkswagen VW Passat TDI at ACT Expo 2012 ride-and-drive with Mercedes-Benz E350 BlueTEC and BMW X5 xDrive x35d bringing up the rear. Michael Coates photo

Hoyler, who manages the Diesel Systems Engine and Emissions Laboratory for Bosch’s Michigan-based North America operations, presented test results on its parallel strong hybrid single clutch powertain in a session here at ACT Expo.

Bosch tested the hybrid powertrain system on a European passenger car platform using NEDC – new Euro drive cycle – protocols. The 1.6-liter diesel engine, 6-speed automated manual transmission, 25-kilowatt integrated motor generator, and 1.5 kilowatt-hour lithium ion battery delivered a 20% fuel consumption reduction on top of the roughly 20% improvement the diesel engine provides, compared to a gasoline engine. It has lower emissions because of faster heat-up of the exhaust gas, and potential for zero-emission operation, Bosch says. The study targeted the low-load areas of a diesel engine map, which are the least efficient.

The Bosch hybrid diesel drive is available in a Peugeot 3008 series crossover passenger vehicle -- the 3008HYbrid4 -- sold in Europe. Peugeot media photo

The Bosch hybrid diesel system is already available in a Peugeot 3008 SUV crossover passenger vehicle (the 3008HYbrid4) sold in Europe.

Hoyler says the company sees its potential in the commercial vehicle market, too, in most any size, but with a sweet spot in light- and medium-duty applications. It’s up to the customer, he says.

“When customers approach us with their strategies, we support them with what we have.” Different customers have different demands, setups and architectures, he adds, noting that Bosch can provide a strong support role or simply deliver components.

Bosch is also working on waste heat recovery systems that turn high quality exhaust heat into usable power. Hoyler says such systems would make sense in class 8 trucks. Bosch is developing a compressed natural gas fuel injection system for commercial vehicle engines too.

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