Diesel fuel composition
a technology of diesel fuel and composition, applied in the direction of liquid carbonaceous fuels, fuel additives, petroleum industry, etc., can solve the problems of reduced flow volume and spray pattern, reduced fuel injector nozzle tip carbon deposits, so as to reduce or eliminate the effect of diesel engine injector deposits
Inactive Publication Date: 2015-02-26
CHEVROU USA INC
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AI Technical Summary
Benefits of technology
The patent text describes a new method for improving the compatibility of a fuel additive composition by blending together the components of the composition. This method involves using a group of diesel additives that normally serve as diesel fuel stabilizers and antioxidants to control diesel fuel injector deposits. This approach eliminates or minimizes the use of higher cost detergent additives, resulting in cost savings and improved performance.
Problems solved by technology
These engines, unlike gasoline engines, lack an ignition source, (i.e., spark plug) to initiate combustion in the cylinder.
Diesel fuel has the tendency to form solid deposits in many engine applications at high temperature.
Carbon deposits, if not controlled, build up at the injector nozzle tip and lead to restricted flow volume and spray pattern.
Larger fuel droplets in the combustion chamber require more time to burn efficiently.
Lacking sufficient timing, fuel economy and emissions are affected adversely.
Method used
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examples
[0028]The following examples are intended to be non-limiting.
[0029]In one experiment, it was attempted to define the required amount of detergent additive for a fuel. This fuel was one that required a stability additive. The test matrix required testing the finished fuel (i.e., a fuel containing additives such cetane number improvers, lubricity additives and the like as listed herein above) both with and without detergent to establish a baseline and to demonstrate the benefit of using the detergent additive. Testing the stabilized finished fuel without detergent additive resulted in very little power loss in the DW-10 engine, indicating very little generation of carbon deposits. Power loss level was low and very similar, both with and without the detergent additive. It was surprising to observe that the stability additive worked to restore power without the use of the deposit control additive. Similar testing using the XUD-9 engine also resulted in a surprising benefit.
[0030]Based o...
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A fuel composition is disclosed comprising a major amount of hydrocarbons boiling in the diesel range and an effective deposit-controlling amount of at least one stability additive or at least one antioxidant additive or mixtures thereof, and wherein the fuel composition contains no more than 30 ppm of active detergent additive or active dispersant additive or mixtures thereof.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims benefit under 35 U.S.C. 119 of U.S. Provisional Patent Application No. 61 / 869,466 with a filing date of Aug. 23, 2013. This application claims priority to and benefits from the foregoing, the disclosure of which is incorporated herein by reference.FIELD OF THE INVENTION[0002]The present invention relates to fuel compositions. More specifically, it relates to diesel fuel compositions that contain no more than 30 ppm of active detergent additive or active dispersant additive or mixtures thereof.BACKGROUND[0003]Diesel engines have been used in applications such as stationary power generation, locomotives, ships, trucks, and automobiles. These engines, unlike gasoline engines, lack an ignition source, (i.e., spark plug) to initiate combustion in the cylinder. Air is compressed to high pressure resulting in sufficiently high temperature to cause auto-ignition when diesel fuel is introduced into the combustion chamber.[0...
Claims
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Patent Timeline
Login to View More IPC IPC(8): C10L10/04C10L1/222
CPCC10L1/2225C10L10/04C10L1/1824C10L1/238C10L2200/0446
Inventor NIKANJAM, MANUCHSMAGALA, THOMAS GREGORY
Owner CHEVROU USA INC