摘要:
A sensor element that may include a contamination-resistant coating on at least a portion thereof. The coating may include gamma alumina and a high temperature binder such as magnesium titanate. A sensor element that may include a contamination-resistant coating on at least a portion thereof. The coating may include gamma alumina, a high temperature binder such as magnesium titanate, and boehmite alumina. A method of making a contamination-resistant sensor element that may include mixing gamma alumina and a high temperature binder such as magnesium titanate to form a mixture, applying the mixture to at least a portion of a sensor element, and temperature treating the mixture to form a contamination-resistant coating on the sensor element.
摘要:
A measuring sensor is described for determining a physical property of a measured gas, especially for determining the oxygen concentration or the pollutant concentration in the exhaust gas of internal combustion engines, which has a sensor element that is exposable to the measured gas which is at least partially coated with a protective layer that protects against harmful components in the measured gas. In order to achieve producing a “contamination protection”, that is cost-effective from a manufacturing technology point of view, particularly against silicon compounds and phosphorus compounds, the protective layer (26) is made of highly active γ- or δ-aluminum oxide (Al2O3) having additives of compounds of the alkaline metals group, the alkaline earths group, the IV B subgroup or the lanthanides group.
摘要翻译:描述了测量传感器,用于确定测量的气体的物理性质,特别是用于确定内燃机排气中的氧浓度或污染物浓度,其具有可暴露于测量气体的传感器元件,该传感器元件至少为 部分涂覆有保护层,防止测量气体中的有害成分。 为了实现生产“污染防护”,从制造技术的观点来看,特别是硅化合物和磷化合物是成本有效的,保护层(26)由高活性的γ-或δ-氧化铝 (Al 2 O 3),其具有碱金属基团,碱土金属组,IVB族或镧系元素族的化合物的添加剂。
摘要:
A sensor element that may include a contamination-resistant coating on at least a portion thereof. The coating may include gamma alumina and a high temperature binder such as magnesium titanate. A sensor element that may include a contamination-resistant coating on at least a portion thereof. The coating may include gamma alumina, a high temperature binder such as magnesium titanate, and boehmite alumina. A method of making a contamination-resistant sensor element that may include mixing gamma alumina and a high temperature binder such as magnesium titanate to form a mixture, applying the mixture to at least a portion of a sensor element, and temperature treating the mixture to form a contamination-resistant coating on the sensor element.
摘要:
A contamination-resistant sensor element and methods for making the same are provided. A sensor element may include a contamination-resistant coating on at least a portion thereof. The coating may comprise gamma-delta alumina and lithium oxide and may have a thickness of about 100 to about 600 microns and a porosity of about 20 to about 70 percent. The method may include using gamma-delta alumina and lithium oxide to form a mixture, applying the mixture to at least a portion of a sensor element, and temperature treated the mixture to form a contamination-resistant coating on the surface of the measuring cell.
摘要:
A system for recovering and utilizing vapor from a source of vapor has a vapor holder for storing a quantity of vapor from the source of vapor. Also included is a condenser coupled to the vapor holder for receiving and condensing at least partially, vapor from the vapor holder. The system also has an engine and a generator driven by the engine for generating electrical power. The engine has an engine intake coupled to the condenser and an exhaust outlet. This engine is powered at least partially, by output from the condensing apparatus. The system also has a fuel adjustment apparatus and a fuel sensor apparatus. The fuel adjustment apparatus has a control input and is coupled between the engine and the condensing apparatus for adjusting fuel concentration into the engine intake in response to a signal on the control input. The fuel sensor apparatus is coupled to the engine intake (a) for sensing concentration of at least some constituents of vapor at the engine intake, and (b) for applying a signal to the control input of the fuel adjustment apparatus corresponding thereto. The system also includes an exhaust sensor apparatus coupled to the exhaust outlet for providing an exhaust signal signifying concentration of at least some constituents of the exhaust at the exhaust outlet.
摘要:
A thermal shock resistant sensor element that includes a sensor element having a gamma alumina coating on at least a portion thereof. The thermal shock resistant sensor element may be thermal shock resistant at temperatures greater than about 600° C. A method of making a thermal shock resistant element that includes plasma spraying gamma alumina onto a sensor element to form a thermal shock resistant element. The thermal shock resistant sensor element may be thermal shock resistant at temperatures greater than about 500° C. A thermal shock resistant sensor element that includes a sensor element having an alumina coating on at least a portion thereof. The thermal shock resistant sensor element may be thermal shock resistant at temperatures greater than about 500° C. and may demonstrate a Si poisoning resistance after exposure to the Gas Burner Test (850° C.) for at least about 60 hours.
摘要:
A contamination-resistant sensor element and methods for making the same are provided. A sensor element may include a contamination-resistant coating on at least a portion thereof. The coating may comprise gamma-delta alumina and lithium oxide and may have a thickness of about 100 to about 600 microns and a porosity of about 20 to about 70 percent. The method may include using gamma-delta alumina and lithium oxide to form a mixture, applying the mixture to at least a portion of a sensor element, and temperature treated the mixture to form a contamination-resistant coating on the surface of the measuring cell.
摘要:
A measuring sensor is described for determining a physical property of a measured gas, especially for determining the oxygen concentration or the pollutant concentration in the exhaust gas of internal combustion engines, which has a sensor element that is exposable to the measured gas which is at least partially coated with a protective layer that protects against harmful components in the measured gas. In order to achieve producing a “contamination protection”, that is cost-effective from a manufacturing technology point of view, particularly against silicon compounds and phosphorus compounds, the protective layer (26) is made of highly active γ- or δ-aluminum oxide (Al2O3) having additives of compounds of the alkaline metals group, the alkaline earths group, the IV B subgroup or the lanthanides group.
摘要翻译:描述了测量传感器,用于确定测量的气体的物理性质,特别是用于确定内燃机排气中的氧浓度或污染物浓度,其具有可暴露于测量气体的传感器元件,该传感器元件至少为 部分涂覆有保护层,防止测量气体中的有害成分。 为了实现生产“污染防护”,从制造技术的观点来看,特别是针对硅化合物和磷化合物是有成本效益的,保护层(26)由高活性的γ或δ-氧化铝 (Al 2 O 3 3),其具有碱金属组,碱土金属组,IVB族或镧系元素基的化合物的添加剂。
摘要:
An unheated planar sensor element for determining the concentration of a gas component in a gas mixture, in particular the oxygen concentration in the exhaust gas of an internal combustion engine, has a sensor foil made of a solid electrolyte with an outer electrode exposed to the measuring gas, and an inner electrode exposed to a reference gas, as well as a reference-gas channel, which is covered by the sensor foil on one side and accommodates the inner electrode. To produce a small-volume, cost-effective unheated sensor element for use in small combustion engines having low power output yet sufficiently satisfactory measuring accuracy, the reference-gas channel is sealed on the underside by an additional sensor foil made of a solid electrolyte, and covered by an inner electrode lying inside the reference-gas channel and an outer electrode exposed to the measuring gas.
摘要:
A vapor recovery apparatus consumes a source of liquified gas to condense vapors in a source of vapors. The apparatus includes an economizing heat exchanger and a finishing heat exchanger. The economizing heat exchanger has a vapor path adapted to be connected to the source of vapors, and a recovery path for exchanging heat with, and cooling vapors in, the vapor path. The finishing heat exchanger has a finishing path connected downstream of the vapor path of the economizing heat exchanger, and a coolant path adapted to be connected to the source of liquified gas for cooling and condensing vapors in the finishing path. The coolant path is isolated from the finishing path to avoid interpath mixing. The finishing path is connected to feed the recovery path of the economizing heat exchanger.