http://www.freepatentsonline.com/y2006/0105920.html
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The invention relates to lubricant compositions containing vegetable oil, and more specifically, to such compositions that exhibit enhanced performance characteristics while achieving excellent high temperature oxidative stability.
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Vegetable oils, such as soybean oil, canola oil, sunflower oil, and coconut oil, have been proposed for use as automotive engine oil, 2-cycle engine oils, total loss lubricants (such as for logging machines, dust suppressants, railroad flange oils, chain saw bar/chain lubricants) and marine lubricants. Vegetable oils exhibit some performance benefits for these uses, but have been promoted primarily because of their better biodegradability and lower toxicity than the mineral oil-based products used today. A few commercial vegetable oil-based lubricants have found market application primarily in small engines. Canola/soybean oil-based products aimed at the automotive engine oil market have been in development for several years. In addition to issues of biodegradability and toxicity, this oil is said to provide lower oil consumption, lower wear, lower volatility, improved fuel economy, cleaner burning, and cause lower harmful exhaust emissions. The United Soybean Board and USDA have actively supported the development of this oil. Automobiles have been successfully operated using this oil, and more recently several significant fleet trials, including those of the USDA in Michigan, Michigan State University, The United States Postal Service, and many farmers of the Thumb Oilseed Producers Cooperative (TOPC) are in progress.
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FIG. 3 is a graph showing a typical 4-ball test result for determining coefficient of friction as a function of load.
FIG. 4 is a graph showing the typical bulk oil temperature profile as measured during a 4-ball test.
FIG. 5 is a 4-ball plot of the coefficient of friction versus load to incipient seizure point for a commercially available engine oil (Valvoline HPO SAE 30).
FIG. 6 is a comparison of the 4-ball test result for a commercially available engine oil (Valvoline HPO SAE 30) versus deodorized corn oil.
Quote:
The invention relates to lubricant compositions containing vegetable oil, and more specifically, to such compositions that exhibit enhanced performance characteristics while achieving excellent high temperature oxidative stability.
Quote:
Vegetable oils, such as soybean oil, canola oil, sunflower oil, and coconut oil, have been proposed for use as automotive engine oil, 2-cycle engine oils, total loss lubricants (such as for logging machines, dust suppressants, railroad flange oils, chain saw bar/chain lubricants) and marine lubricants. Vegetable oils exhibit some performance benefits for these uses, but have been promoted primarily because of their better biodegradability and lower toxicity than the mineral oil-based products used today. A few commercial vegetable oil-based lubricants have found market application primarily in small engines. Canola/soybean oil-based products aimed at the automotive engine oil market have been in development for several years. In addition to issues of biodegradability and toxicity, this oil is said to provide lower oil consumption, lower wear, lower volatility, improved fuel economy, cleaner burning, and cause lower harmful exhaust emissions. The United Soybean Board and USDA have actively supported the development of this oil. Automobiles have been successfully operated using this oil, and more recently several significant fleet trials, including those of the USDA in Michigan, Michigan State University, The United States Postal Service, and many farmers of the Thumb Oilseed Producers Cooperative (TOPC) are in progress.
Quote:
FIG. 3 is a graph showing a typical 4-ball test result for determining coefficient of friction as a function of load.
FIG. 4 is a graph showing the typical bulk oil temperature profile as measured during a 4-ball test.
FIG. 5 is a 4-ball plot of the coefficient of friction versus load to incipient seizure point for a commercially available engine oil (Valvoline HPO SAE 30).
FIG. 6 is a comparison of the 4-ball test result for a commercially available engine oil (Valvoline HPO SAE 30) versus deodorized corn oil.
