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“MBE 4000-A New Engine for the US Class 8 Truck Market”
ISSN: 0148-7191, e-ISSN: 2688-3627
Published December 04, 2000 by SAE International in United States
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Due to ever soaring fuel costs and even more stringent emission regulations which require more elaborate technical efforts and unfortunately lead to a negative trend on fuel economy as well, todays and future trucking business is extremely challenged.
These facts create an urgent requirement for the engine manufacturer to offer an engine with an optimized cost-benefit-ratio for the trucking business.
Mercedes-Benz, as the leader in the European commercial vehicle market - of which e. g. high fuel costs, long maintenance intervals and high engine power-to-weight ratios have always been key characteristics - has developed a new class 8 engine for the US market.
The MBE 4000 is a 6 cylinder inline engine in the compact size and low weight category, but due to its displacement of 12,8 liters it offers high performance characteristics like heavier big block engines.
The engine is equipped with electronic unit injection pumps which offer advantages for installation requirements being mounted in the block.
A highlight is the new Turbobrake, an engine brake, which provides increased engine braking power while operating at a very low noise level.
The technology is based on highly efficient turbocharging in braking conditions, combined with the Mercedes-Benz constant throttle valve.
The engine has been intensively tested in Freightliner trucks in the US, Brazil and South Africa under normal as well as extreme load conditions and is scheduled to be launched in the US now.