Current internal combustion engine technology for road vehicles allows us to meet the existing and planned future standards for emission. However, the motion of a moving vehicle used in real operating conditions is frequent changes of the values of power in the powertrain. The analysis of the results of the road test through a measurement of parameters of engine in a passenger car proves, that ...

Newton's laws describe some very general principles of the motion of an automobile car and their quantitative relations but do not prescribe its design. For instance, a vehicle does not necessarily have four wheels, but based on Newton’s second law it should have an engine that provides a force. Once a design has been made, theory helps in the analysis of the performance of this new design (as ...

OBJECTIVE To assess differences between the risk of injury for motorcycle riders before and after the passing of a law allowing licenced car drivers to drive light motorcycles without having to take a special motorcycle driving test. METHODS We carried out a quasi-experimental study involving comparison groups, and a time-series analysis from 1 January 2002 to 30 April 2008. The study group w...

In this paper, a new subspace-based speech enhancement algorithm for in-car human computer speech interaction is presented. We first incorporate a perceptual filterbank which is derived from psycho-acoustic model with signal subspace approach to effectively suppress in-car noises of engine. Second, for real-time applications, a new subspace tracking algorithm is derived by modifying PASTd algor...

Car-to-car and Car-to-Infrastructure messages exchanged in Intelligent Transportation Systems can reach reception rates up to and over 1000 messages per second. As these messages contain ECDSA signatures this puts a very heavy load onto the verification hardware. In fact the load is so high that currently it can only be achieved by implementations running on high end CPUs and FPGAs. These imple...

In a modern small sized passenger car fitted with a common rail diesel engine, turbo-lag is an important factor which hampers its performance. This paper discusses the basics of turbo-charger and VGT and some of the methods employed to reduce the turbo-lag in CRDI diesel engine. A novel turbocharger concept, approach to design, the control strategy and advantages of the concept are explained.

With rapidly changing computer and IT and much of the technology finding way into cars, cars are undergoing histrionic changes in their ability. Although some cars have provisions for deciding to either generate warnings for the human driver or control the car free, they usually must make these decisions in real time with only incomplete information. So, it is important that human drivers still...

Diesel engines with direct injection have become very important in recent years. Because of flexible injection curves, the energy conversion can be manipulated during operation. To examine how the pressure inside the combustion chamber is influenced new engine models are necessary. The engine model introduced in this paper can be used in the development process of engine control units and as a ...

Quality investigations and design of interior car sounds constitute an important challenge for the car industry. Such sounds are complex and time-varying, inducing considerable timbre variations depending on the driving conditions. An interior car sound is indeed a mixture between several sound sources, with two main contributions, i.e. the engine noise, the aerodynamic and tire-road noise. Tha...