Approaches are presented for calculating carbon dioxide (CO 2 ) emissions generated by the use of exhaust gas purification technology based on urea catalysts. To reduce harmful substances in gases diesel-fueled automobile engines, need SCR is justified. It shown that main source diesel freight transport, while it advisable to carry out calculations from 2010, and not 2005, as a number foreign e...

We report improved sensitivity to NO, NO₂ and NH₃ gas with specially-designed AlGaN/GaN high electron mobility transistors (HEMT) that are suitable for operation in the harsh environment of diesel exhaust systems. The gate of the HEMT device is functionalized using a Pt catalyst for gas detection. We found that the performance of the sensors is enhanced at a temperature of 600 °C, and the measu...

Soot particulates are sampled from a EURO-IV standards diesel engine and investigated by high-resolution electron microscopy (HRTEM) and thermal gravimetry (TG). The experiments reveal a drastic reduction of primary particle size down to less than 20 nm, much smaller than that emitted by earlier diesel engines (EURO I-III). HRTEM reveals primary particles with deformed fullerenoid structures. T...

This study describes the development of a semi-physical, real-time nitric oxide (NO) prediction model that is capable of cycle-by-cycle prediction in a light-duty diesel engine. The model utilizes the measured in-cylinder pressure and information obtained from the engine control unit (ECU). From the inputs, the model takes into account the pilot injection burning and mixing, which affects the i...

Antipollution legislation in automotive internal combustion engines requires active control of pollutant formation and emissions. In addition to new technologies, like selective catalyst systems or diesel particulate filters, predictive emission models are needed. These models are of great use in the system calibration phase, and also can be integrated for the engine control and on-board diagno...

Yann Guezennec, Shawn Midlam-Mohler, Makoto Tateno and Mike Hopka Center for automotive Research and Intelligent Transportation Ohio State University 930 Kinnear Road Columbus, OH 43212 USA Abstract: A two-stage approach to Diesel emission management in Diesel Hybrid Electric Vehicles is presented. The first aspect of this work focuses on a supervisory control strategy for charge-sustaining, ...

In automotive applications large-scale nonlinear dynamical models are utilized for hardware-in-the-loop simulations and model-based controller design. A projection-based order reduction of these models, on the one hand, yields substantial advantages in computational speed and on the other hand, simplifies the controller design procedure. In this work a mathematical-empirical approach is chosen ...

Although the compatibility of biodiesel with the key components of automobile engine such as cylinder, pistons, piston rings, connecting rods, bearings, etc. have posed a big challenge to tribologists, they have yet to come up with a solution to reduce tribological degradation of different metals as well as the used fuel. Some efforts have already been given to understand the corrosion and wear...

This paper addresses the application of high exhaust gas recirculation (EGR) for reduced nitrogen oxide emissions from diesel engines. The research objective is to develop fundamental information about the relationship between EGR parameters and diesel combustion instability and particulate formation so that options can be explored for maximizing the practical EGR limit, thereby further reducin...

Exhaust noise in engines has always been a major source of automotive noise. Challenges for muffler design have been constraints on size, back pressure, and, of course, the cost. Designing for sufficient insertion loss at the engine firing frequency and the first few harmonics has been the biggest challenge. Most advances in the design of efficient mufflers have resulted from linear plane wave ...