Abstract
Frequent stops and starts for the traffic lights as well as acceleration/deceleration, rather than at constant speed, are the most common transient operating conditions. Consequently, understanding the dynamic characteristics of the powertrain system is vitally important in designing an efficient and fresh vehicle. To investigate the dynamic characteristics of the road vehicle performance, apart from a real road testing, it is necessary to set up a numerical test bed for dynamic performance simulation. The latter is even more convenient, costless and data repeatable. However, the aim of the present paper is to establish a computer simulation package by which the road vehicle power-train system design is developed for a small passenger vehicle based on fuel economy and performance. Furthermore, a proposed professional computer program of Automated Manual Transmission (AMT) system related to organizer algorithm of attractive gearshift requests is also introduced. The result of the proposed AMT ensures that the drive wheels force balance in order to keep gear shift, to kick down or up not only shift feel but also the fuel consumption, and to alarm by near a specific failure or to get back system performance.
Highlights
The aim of the present paper is to establish a computer simulation package by which the road vehicle power-train system design is developed for a small passenger vehicle based on fuel economy and performance
A proposed professional computer program of Automated Manual Transmission (AMT) system related to organizer algorithm of attractive gearshift requests is introduced
To develop the road vehicle power-train system design based on fuel economy and performance a computer simulation package was established for a small passenger vehicle
Summary
To develop the road vehicle power-train system design based on fuel economy and performance a computer simulation package was established for a small passenger vehicle. The developed vehicle power-train system is included automated manual transmission (AMT). AMT has additional advantage rather than the manual transmission (MT) in which the clutch works by an actuator are controlled by number of solenoids instead of manual operation. The transmission select and shift speeds are achieved by actuators and valves. The program is based on calculation difference between vehicle tractive effort Ft and total resistance; predict by near a specific failure and control it by get back system performance modification. It is well understood that for the vehicle power train design, the targets are always to achieve minimum fuel consumption, best derivability and acceptable air pollution. The main cause of unwanted emissions and bad fuel economy is the transient operation conditions [1]
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