By Schaeffler Technologies GmbH & Co. KG
ISBN-10: 3658061944
ISBN-13: 9783658061944
ISBN-10: 3658064307
ISBN-13: 9783658064303
Every 4 years, Schaeffler presents an perception into its most modern advancements and applied sciences from the engine, transmission and chassis in addition to hybridization and electrical mobility sectors. In 2014 the Schaeffler Symposium with the motto “Solving the Powertrain Puzzle” came about from 3th to 4th of April in Baden-Baden. Mobility for day after today is the valuable topic of this continuing. The authors are discussing different standards, that are put on mobility in numerous areas of the realm. as well as the company's paintings in learn and improvement, a accomplished in-house mobility learn additionally presents a competent foundation for the dialogue. The authors are confident that there'll be a paradigm shift within the automobile undefined. matters reminiscent of expanding potency and advancing electrification of the powertrain, automated and semi-automatic riding, in addition to integration in details networks will outline the car destiny. additionally, the range of ideas on hand around the world becomes progressively more complicated and mobility styles also will swap quickly. although, this doesn't suggest that autos will force nearly sooner or later. Powertrains in line with inner combustion engines will nonetheless dominate for a long time and exhibit new strengths together with hybrid drives. Transmissions also will achieve in significance because the hyperlink among the inner combustion engine and electrical motor. The continuing “Solving the Powertrain Puzzle” comprises 34 technical papers from well known specialists and researchers within the box of car engineering.
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Example text
Losses for a typical cycle, in which the vehicle’s aerodynamics are not taken into account, can be seen in Figure 2. In modern powertrain concepts, the engine’s special operating states also play a vital role when it comes to standard and actual fuel consumption. This applies to transient states, such as increased acceleration. During acceleration, engines with high weight-to-power ratios and low displacement exhibit relatively high deviations from their optimum operating point. One of the reasons for this is “full-load enrichment”, which often needs to be applied at relatively low speeds to avoid knocking combustion and protect exhaust components from excessive temperatures.
On account of increasingly stringent CO2 legislation, all other sources of loss are now also being studied. This applies in particular to –– Crankshaft –– Valve train –– Balancer shafts –– Camshaft and auxiliary equipment drives –– Losses caused by operating the coolant and the oil pump In total, these friction values account for about 50 % of the friction losses of an average combustion engine (Figure 9). In addition, the engine heat-up process becomes more important due to the relationship between friction and oil temperature.
Engine warm up The high thermodynamic efficiency of modern engines also has its disadvantages: significantly less waste heat is produced, which is however needed to heat the engine, transmission and, depending on weather conditions, the vehicle interior. At the same 53 Figure 12 Structure of the Schaeffler thermomanagement module with integrated water pump 54 Compact designs for smaller engines and vehicles and further development of functional integration are the focus for future applications [8].
Solving the Powertrain Puzzle: 10th Schaeffler Symposium April 3/4, 2014 by Schaeffler Technologies GmbH & Co. KG
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