An automatic transmission oil composition improving frictional property and fuel economy and a clutch for automatic transmission comprising the same
A technology of automatic transmission oil and fuel economy, applied in friction clutches, mechanical drive clutches, fluid drive clutches, etc., can solve problems such as metal wear, ineffective transmission of power, poor durability, etc., to improve wear resistance, improve Effect of improving fuel economy and durability
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Embodiment 1 to 5 and comparative Embodiment 1 to 3
[0090] Automatic transmission oil compositions were prepared by stirring and mixing the compositions listed in Table 1 below.
[0091] Table 1
[0092]
[0093] The compositions of Examples 1 to 5 included 5% to 15% by weight polyalkylene glycol oil and 1.5% by weight succinic anhydride derivative. On the other hand, the composition of Comparative Example 1 did not contain polyalkylene glycol oil, the composition of Comparative Example 2 included less than 5% by weight of polyalkylene glycol oil, and the composition of Comparative Example 3 included More than 15% by weight polyalkylene glycol oil.
[0094] The compositions according to Examples 1 to 5 and Comparative Examples 1 to 3 were evaluated for dynamic friction coefficient, incombustible friction torque improvement rate, fuel economy improvement rate, and iron (Fe) wear amount after driving durability by the following methods.
[0095] Coefficient of dynamic friction: evaluated by JASOM348 test method. Specificall...
Embodiment 6 to 9 and comparative Embodiment 4 to 5
[0104] Automatic transmission oil compositions were prepared by stirring and mixing the compositions listed in Table 3 below.
[0105] table 3
[0106]
[0107] The compositions of Examples 6 to 9 included 10% by weight polyalkylene glycol oil and 3% to 10% by weight succinic anhydride derivative. On the other hand, the composition of Comparative Example 4 included less than 3% by weight of the succinic anhydride derivative, and the composition of Comparative Example 5 included more than 10% by weight of the succinic anhydride derivative.
[0108] The compositions according to Examples 6 to 9 and Comparative Examples 4 to 5 were evaluated for dynamic friction coefficient, incombustible friction torque improvement rate, fuel economy improvement rate, and iron (Fe) wear amount after driving durability by the above methods. The results are shown in Table 4 below.
[0109] Table 4
[0110]
[0111] Referring to Table 4, compared with Comparative Examples 4 to 5, in Exampl...
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