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A variety of tests are conducted in our own laboratory, including
the JASO TD25 detergency test (JASO M336), the JASO 4D34 valve train wear test (JASO M354) and
other critical performance evaluations. The absolute accuracy of testing
is made possible through the use of various types of control instruments,
including a system that delivers a stable supply of intake air at a specific
temperature and humidity. For the measurement of parts before and after
testing we employ a laser-micro tester, surface-roughness tester and
various other precision instruments. Moreover, our JPI engine-test evaluation
staff conducts test rating following each bench test.
Feature Activities
Main Facilities
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TD25 test bench |
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4D34T test bench |
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Surface-roughness tester |
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Laser-micro tester |
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