Traditional vehicle air conditioning systems condition the entire cabin to a comfortable range of temperature and humidity regardless of the number of passengers in the vehicle. The A/C system is designed to have enough capacity to provide comfort for transient periods when cooling down a soaked car. Similarly for heating, the entire cabin is typically warmed up to achieve comfort. Localized he...

To increase the efficiency and reduce emissions, the hybrid electric vehicle (HEV), fuel cell vehicle (FCV), and electric vehicle (EV) types were developed. All these vehicle types rely on power electronics (PEs) to function. Yet, the reliability and performance of PEs are directly related to the operating temperature. Therefore, cooling is considered an option to reduce the operating temperatu...

The launch of the new 1.8 l TFSI engine marks the third generation of the successful four-cylinder gasoline engine family from Audi. It has been completely revised in order to meet ambitious CO2 targets and ensure compliance with future Euro 6 emissions standards. The new generation features numerous innovative technologies, including an exhaust gas cooling system integrated into the cylinder h...

Hypersonic vehicles with single-stage-to-orbit (SSTO) capability present a major design challenge. Such vehicles reflect highly integrated airframe and propulsion systems and are also known to exhibit a large degree of interaction between the airframe and engine dynamics. Consequently, even simplified hypersonic models are characterized by tightly coupled nonlinear equations of motion. The vehi...

Drivability calibration of a vehicle’s engine and transmission controller largely defines the unique character of the vehicle. Today, calibration is mostly performed on the road and on test rigs. Recent advances regarding virtualisation of ECUs made it possible to establish Software-in-the-Loop simulation as a development tool as well. To this end, Daimler AG and QTronic GmbH jointly conducted ...

Trends Light fossil fuel vehicles are now turning to electricity. The electric vehicle transition begins with a hybrid car. Hybrid uses an internal combustion engine as generator. Controller systems, driving safety and entertain light growing so that they consume lot of electricity, Safe devices lifestyle support. An additional battery charging system for car is being developed by the automotiv...

globally excessive consumption of hydrocarbon fuel in transport sector is a serious threat to the civilization due to paucity of fuel in future. also this growing use of vehicles for transport is contributing about 70% of total air pollution and causing environmental and ecological imbalances. thus the worldwide fast depletion of conventional energy resources and impact of emissions on environm...

This paper describes the fundamental motivation and ideas surrounding current developments in available energy-based methods for vehicle design, which are a class of methods allowing direct estimation of the total cost chargeable to each loss mechanism in any general vehicle design (land, sea, air, or space). It is shown that losses can be expressed in terms of chargeable fuel weight. These are...