SAE Powertrain & Energy - Prototype Issue - 7

Layout of the traction equipment on the tractor. An alternative to EMD is a hydraulic drivetrain (HDT), which comes in various types. However, they require very precise mechanical machining during manufacture and use of high-quality oil. In addition,

HDT efficiency is lower than that of the EMD, and service life is short. In comparison to a conventional tractor, the prototype tractor equipped with EDM technology has additional advantages beyond better fuel consumption and improved implement efficiency. Among them are reduced dynamic loads on the tractor and diesel units; reduced wheel slippage; continuous variation of speed of the tractor and aggregated implements; reduced expenses on maintenance, repair, and spare parts; and increased total reliability, controllability, and comfort. The tractor can be used as a power source.
This article is based on a technical paper jointly published by SAE International (2011-01-2296) and AVL List GmbH (ICPC 2011 – 3.3) by Alexey A. Puhovoy and Ivan N. Uss of Production Association Minsk Tractor Works; and Stanislav N. Florentsev, Dmitry B. Izosimov, and Lev N. Makarov of Ruselprom-ElectricDrive Ltd.

Recovering exhaust heat to generate electricity and boost efficiency
Despite the unprecedented technical sophistication of today’s cars, automotive engineers can never really overlook the fact that those same vehicles waste more than two-thirds of the energy that is in the gasoline they burn. Most of that— around 40%—is squandered out the exhaust system as hot gases exit at a temperature from 300 If perfected, GM’s engineering prototype energy-harvesting technology could boost fuel economy by 5 to 10%. to 700°C (570 to 1300°F). Facing the prospect of high fuel prices, automakers have long considered how their vehicles might squeeze out even a few percent more useful energy from fuel, but nothing practical has yet emerged. That may be changing, however. Recent improvements in the performance of thermoelectric (TE)

SAE Powertrain & Energy

Coming Jan. 25, 2012

SAE Powertrain & Energy - Prototype Issue

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