H同學愛用 台灣石油?!
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https://www.lubrizoladditives360 ... spi-drain-interval/
“We thought it was important to go beyond standard tests to fully understand LSPI propensity and durability in both fresh and used oils. This helps us formulate a solution that we are confident can truly mitigate harmful LSPI in TGDI engines throughout the oil drain interval,” says Alex Michlberger, lead technologist for passenger car engine oil testing at Lubrizol.
A total of four oils were tested: a baseline oil – all calcium detergentA substance added to a fuel or lubricant to keep engine parts clean. In motor oil formulations, the most commonly used detergents are metallic soaps with a reserve of basicity to neutralize acids formed during combustion. system (poor LSPI performance); Formulating solution 1 – calcium is reduced and magnesium is added; Formulating solution 2 – molybdenum dialkyldithiocarbamate (MoDTC) is added; and finally Formulating solution 3 – the addition of titanium. The results of the tests found that all three formulation strategies were successful at mitigating LSPI in fresh oil; however, following the aging process, the propensity of LSPI was observed to be very different. Both formulation 2 and 3 showed very poor LSPI durability, while formulation 1 was the only
oil to continue to mitigate LSPI when aged. “This is an important finding – that not all oils which pass a fresh oil certification test may mitigate LSPI over the full oil drain interval,” concludes Michlberger.
本文最後由 pompom 於 2018-10-2 01:55 編輯
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