Topic
Automatic transmission fluid
About: Automatic transmission fluid is a research topic. Over the lifetime, 301 publications have been published within this topic receiving 2191 citations. The topic is also known as: transmission fluid.
Papers published on a yearly basis
1 / 2
Papers
Patent•
12 Feb 1999TL;DR: In this paper, an easily biodegradable low viscosity, low Noack volatility lube oil material has been proposed, which is produced by the isomerization of a wax feed having a viscosities of from 4 to 10 cSt at 100 °C and containing less than about 25 % oil in wax.
Abstract: The present invention is directed to an easily biodegradable low viscosity, low Noack volatility lube oil material having a viscosity index (VI) in the range of about 110-145, ⊃98 % saturates useful as lube oil basestock, automatic transmission fluid (ATF) basestock or blending stock. The lube oil material is produced by the isomerization of a wax feed having a viscosity of from 4 to 10 cSt at 100 °C and containing less than about 25 % oil in wax.
104 citations
TL;DR: In this paper, the effects of design factors of clutch packs on drag torque were investigated and it was shown that the design factors with a large effect were facing area and wave height, while automatic transmission fluid flow rates and the number of grooves also had a significant effect.
Abstract: Experiments were conducted to study the effects of design factors of clutch packs on drag torque. From the test results, the design factors with a large effect were facing area and wave height. At high rotational speeds,automatic transmission fluid (ATF) flow rates and the number of grooves also had a significant effect. At low rotational speeds, since drag torque increased linearly with increasing speed, the results were compared to calculated values using theoretical equations based on Newton's law of viscosity. Furthermore, it was confirmed through visualization experiments of ATF flow on the rotating facing surface that the ATF completely covered the surface at low rotational speeds and that air mixed with the ATF at high rotational speeds.
99 citations
Patent•
5 Nov 1973TL;DR: Automatic transmission fluid composition and concentrates thereof comprising of a major amount of a lubricating oil and a friction modifying amount of an N-(hydroxyalkyl) alkenyl succinamic acid or a mixture of N-(Hydroxy alkenyclic) succinamides and N(hydroxalkyl)-alkenyl precursors are discussed in this paper.
Abstract: Automatic transmission fluid composition and concentrates thereof comprising a major amount of a lubricating oil and a friction modifying amount of an N-(hydroxyalkyl) alkenyl succinamic acid or a mixture of N-(hydroxyalkyl) alkenyl succinamic acid and N-(hydroxyalkyl) alkenyl succinimide. In addition, a method of operating an automatic transmission having friction sensitive power transmitting means employing the aforedescribed automatic transmission fluid composition.
80 citations
TL;DR: An innovative technology using Colloidal Gas Aphrons (CGAs) is applied in this paper to flush residual levels of a light non-aqueous phase liquid (LNAPL) such as automatic transmission fluid (ATF) from a Superfund site soil.
71 citations
TL;DR: In this paper, the impact on wet clutch friction versus sliding speed properties of a range of additive solutions as well as a fully formulated automatic transmission fluid (ATF) was measured using a mini-traction machine.
Abstract: For a wet clutch in an automatic transmission to operate efficiently and smoothly, it is essential that the friction in the clutch contact be high over the whole sliding speed range and also increase with sliding speed. This is achieved by careful design, both of the friction disc material and morphology and of the automatic transmission fluid. This article describes the development and use of a new test rig, based on a mini-traction machine (MTM), to measure the impact on wet clutch friction versus sliding speed properties of a range of additive solutions as well as a fully formulated automatic transmission fluid (ATF). It is found that most organic friction modifiers reduce friction at low sliding speed, whereas succinimide dispersants and some sulfonate detergent additives raise friction over the whole speed range. Overbased and neutral detergents give almost identical friction curves, indicating that, although a calcium carbonate film is deposited on the steel ball when overbased detergent is present,...
65 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2021 | 2 |
| 2020 | 3 |
| 2019 | 4 |
| 2018 | 5 |
| 2017 | 11 |
| 2016 | 15 |