公开(公告)号：US5162235A

公开(公告)日：1992-11-10

申请号：US371782

申请日：1989-06-27

申请人： Dennis R. Hardy ,  Erna J. Beal ,  Jack C. Burnett

发明人： Dennis R. Hardy ,  Erna J. Beal ,  Jack C. Burnett

IPC分类号： G01N5/00 ,  G01N33/28

CPC分类号： G01N5/00 ,  G01N33/2805 ,  Y10S44/903 ,  Y10T436/21 ,  Y10T436/214 ,  Y10T436/25375

摘要： Reactions leading to insoluble sediments formation in distillate fuel are accelerated by forcing oxygen into solution in the fuel at pressures of between about 90 and 110 psig and then stressing the fuel under conditions of accelerated storage at temperatures of between about 40.degree. C. to 100.degree. C. The method then makes use of gravimetric determination of the total insolubles formed. The stability of the fuel over a period of time as well as its comparative stability to other fuels can then be predicted from the amount of insolubles formed. The method can be carried out by using a specialized pressure vessel.

摘要翻译： 导致在馏出燃料中形成不溶性沉积物的反应通过在大约90-110psig的压力下迫使氧气在燃料中溶解，然后在加速储存的条件下在约40℃至100℃的温度下加压燃料而加速 然后，该方法利用形成的总不溶物的重量测定。 然后可以从形成的不溶物的量来预测燃料在一段时间内的稳定性以及其对其他燃料的比较稳定性。 该方法可以通过使用专门的压力容器进行。

公开(公告)号：US5299449A

公开(公告)日：1994-04-05

申请号：US875955

申请日：1992-04-30

申请人： Dennis R. Hardy ,  Erna J. Beal ,  Jack C. Burnett

发明人： Dennis R. Hardy ,  Erna J. Beal ,  Jack C. Burnett

IPC分类号： F02B3/06 ,  G01N5/02 ,  G01N33/28 ,  G01N5/00

CPC分类号： G01N33/2805 ,  G01N5/02 ,  F02B3/06

摘要： The tendency of liquid hydrocarbon-based fuels, such as kerosene, diesel l, and jet fuel toward the formation of fuel-insoluble solids during thermal stress in an aircraft fuel system is assessed by an accelerated test method comprising passing a predetermined quantity of a sample of fuel through a heated test section maintained at a predetermined temperature, at a predetermined fuel flow rate. A metal test strip, weighed before the test, is clamped in the heated test section during the test. It is weighed again after the test and the weight of solids buildup during the test is determined. It is related directly to the tendency of the fuel to form fuel-insoluble solids during thermal stress. A filter is weighed before the test. It is then connected to the outlet of the test section, and liquid fuel leaving the test section during the test is passed through it. The filter is then weighed a second time and the weight increase of the filter due to its capture of fuel-insoluble solids is calculated. It also is directly related to the tendency of the fuel to form fuel-insoluble solids during thermal stress.

摘要翻译： 通过加速测试方法来评估液体烃类燃料（例如煤油，柴油燃料和喷气燃料）在飞机燃料系统的热应力期间形成燃料不溶性固体的趋势，包括使预定量的样品 的燃料通过保持在预定温度的预定燃料流量的加热测试部分。 在测试之前称重的金属测试条在测试期间被夹紧在加热的测试部分中。 在测试之后再次称重，并且确定测试期间固体积聚的重量。 它直接与燃料在热应力期间形成燃料不溶性固体的趋势有关。 在测试之前称重过滤器。 然后将其连接到测试部分的出口，并且在测试期间离开测试部分的液体燃料通过它。 然后再次称重过滤器，并计算由于其捕获不溶于燃料的固体产生的过滤器的重量增加。 它也直接与燃料在热应力期间形成燃料不溶性固体的趋势有关。