Hall's Automotive's    "Indoor Highway"

DRIVEABILITY DIAGNOSTIC ANALYSIS

We analyze vehicles by appointment ONLY! Because many driveability problems are time-consuming to analyze, we ask that all vehicles be dropped off with us in the morning with the understanding that we will have your vehicle for the entire day. During a normal week, we schedule vehicles on Monday, Tuesday, Wednesday and Thursday. When you schedule an appointment for analysis, you are essentially buying a block of our time during which we will analyze your problem using some of the most up-to-date tools that are available.

What is a chassis dynamometer? Certain engine or vehicle development tasks require testing the vehicle in similar conditions as on the road, but while remaining in the laboratory or workshop. A chassis dynamometer (also called "rolling road") is capable of simulating driving situations in a controlled environment. Chassis dynamometers typically consist of rolls driven by the wheels of the vehicle and connected to some type of power absorber capable of controlling the load applied to the rolls. Electronic instrumentation and computer control software is now common, and the operator usually has a hand-held device to control some of the dynamometer functions while driving the vehicle. The chassis dynamometer has distinct advantages, the most important of which is the possibility of testing complete vehicle performance or engine performance as installed. There is no requirement to take the engine out of the vehicle, which simplifies both the test procedure and the environment required to support the test. However, accurate and repeatable measurements are more difficult to make due to the large number of factors (such as driveline losses or tire wear, pressure and temperature) influencing the results. Access for the installation of sensors is also limited. Chassis dynamometers are typically used for: rapid power checks supplement to engine dynamometer testing measurement of driveline losses tests requiring accurate measurements of vehicle output tests requiring a complete vehicle for measurement of fuel consumption, noise, or exhaust emissions.