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3.0 System Overview
3.1 Overview
The WinDyn dynamometer software system is an instrumentation package designed for complete test
control and data acquisition of an engine or chassis dynamometer. Typical applications include:
• Research and development (R&D)
• Performance testing
• Durability and quality control testing
• Fuel consumption and emissions testing
• Education
• Certication testing
You can congure WinDyn for your specic testing needs and can expand it with additional data acquisition
capabilities and interfaces as needed. For highest productivity, you can share test data over a facility
computer network.
A dynamometer system consists primarily of two major components: the Power Absorption Unit (PAU) on a
stand with its associated equipment, and the Data Acquisition and Control (DAC) system with its associated
accessories.
• The absorber stand also holds auxiliary equipment such as a ow measurement system, and an engine
cooling system.
• The DAC system is made of the Central Processing Unit (CPU), an operator control interface, a device
to control the load applied to the absorber, and a network of sensors to collect data from the absorber
and the engine. The WinDyn software on a stand-alone Personal Computer (PC) allows users to
display and analyze the data during and after a test.
The purpose of using a dynamometer is to test the performance of an engine prior to putting it back in
service. It allows for the break-in of a new or newly rebuilt engine in a controllable environment. Typically
the SF-902S system is distributed to racing engine manufactures or rebuilders. They have proven this type
of break-in procedure through many years of experience. Properly run-in engines last longer, run better and
cost less to maintain.
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