Cold testing
Cold testing is the current state of the art and has largely replaced hot testing for quality and functional testing due to its high environmental compatibility. The cold test is used within an assembly line to test whether the previous assembly step has been correctly carried out and whether the engine is functionally capable. In doing so the engine need not be fired up but rather can be turned over with an electric motor in passive operation. As with the leak test, we determine the limits for the OK and NOK window together with our customers.
In doing so, we use our in-house developed, high-resolution Ethernet measurement technology and our own cold test software. This is distinguished by its low-maintenance and user-friendly nature and which allows individual database analysis. In addition, JW FROEHLICH cold test stands have a reputation for low-maintenance drive heads, specific measurement and control software, a highly flexible modular construction, potential separation for all measurement and control signals as well as a common vibration-insulated machine base, allowing sensitive and dynamic measurements.
JW Froehlich Maschinenfabrik GmbH
Team Combustion Engines
sales@jwf.com
+49 711 79766-752
Measurement system, actuator/sensor test
JWF have developed high resolution measurement systems and analysis software for a variety of applications. For example, readings from noise analysis and turbocharger tests can be assessed in addition to mechanical, sensor and actuator test data.
As a supplement to the cold test within the assembly line, or as an individual station beside the line, we also offer modular test stations for engine production, which can be used to measure, control and regulate engine components.
Hot test stand
We have developed hot test stands for quality assurance sample testing of engines over the last forty years. The combustion engine is fired up and runs autonomously in the hot test stand, which is in contrast to the cold test whereby the engine is not fired.
Engine data is measured at varying levels of load and a short performance test is carried out to complete the hot test.
JW Froehlich software, incorporating menu-led parameter setting, enhances the testing process and a high level of automation of the media supply simplifies the operation of our hot test stand.
