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Jernbro’s laboratory and equipment for engine testing is located in an anonymous room in their unit in Skövde. It is used for development and testing but in point of fact, engine testing should be integrated with manufacturing as much as possible.

One type of engine testing is IPV (In Process Verification) where you verify the engine in stages during the assembly process.

“It is mainly connected with the production of engines for trucks. The concept comprises a number of stations where testing takes place after a critical operation, which either verifies the function or sounds the alarm if there are any shortcomings,” says Rickard Lundquist, project manager at Jernbro.

The basic principle of IPV is therefore very simple; you could say that a co-worker checking the equipment with a caliper is an example of IPV. The purpose is to verify and control the process, and the outcome of production, as soon as possible.

“What makes our process extra valuable to the customer is precision in combination with automation, that is you automatically get an analysis of the test result.”


“This engine testing has several benefits for the customer,” says Rickard Lundquist. “To begin with you can replace part of the earlier hot test with cold tests followed by a short hot test. For example, a truck engine was previously run in a separate engine testing room for about 20 minutes. With IPV equipment from Jernbro, a hot testing of between two to three minutes is enough.”

“This of course contributes to shorter lead times and reduced fuel consumption, which in turn saves both money and the environment,” he says

With more precise control and faster feedback, the customer also gets increased quality assurance in their production. This means that maintenance and warranty issues are significantly reduced.


Jernbro has been testing engines since 1998 and has delivered a series of test equipment mainly for the manufacturing of truck engines. Since then, we have refined our methods and also started engine testing for passenger cars. In this case, it is End-of-Line testing, where the engine is tested in the absolute final stage. The engine is started and driven for several minutes to test for, among other things, leak tests.

“In this way, it is possible to do inspection tests on noise and leakage when temperatures change,” says Rickard Lundquist.

During the years, we have developed a sophisticated emulation engine management system, giving customers flexibility. The equipment is not tied to the product but can be adapted to future product changes.


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Pär Knutsson, Skövde (Southwest) Sales Manager Automation +46104831184 Email

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