摘要:
A system for maintaining hydraulic pressure in a vehicle hydraulic system when the vehicle is stopped or idling. A hydraulic pressure reserve system includes a primary hydraulic circuit that includes a hydraulic pump and a hydraulic sump and that provides hydraulic pressure to at least a hydraulically actuated transmission and an accumulator tank and control valve connected from the primary hydraulic circuit for storing a reserve of hydraulic fluid at an accumulator pressure. An accumulator control valve, such as a bi-directional valve, allows a flow of hydraulic fluid between the primary circuit and the accumulator tank according to the primary circuit pressure to raise the primary circuit pressure towards a desired pressure. The hydraulic pressure reserve system may include a primary gear connected from a primary drive and driving an auxiliary secondary gear with a primary drive clutch for connecting the secondary gear to drive the hydraulic pump and an auxiliary drive clutch for connecting the auxiliary secondary gear or a drive chain to drive the hydraulic pump.
摘要:
A system for maintaining hydraulic pressure in a vehicle hydraulic system when the vehicle is stopped or idling. A hydraulic pressure reserve system includes a primary hydraulic circuit that includes a hydraulic pump and a hydraulic sump and that provides hydraulic pressure to at least a hydraulically actuated transmission and an accumulator tank and control valve connected from the primary hydraulic circuit for storing a reserve of hydraulic fluid at an accumulator pressure. An accumulator control valve, such as a bi-directional valve, allows a flow of hydraulic fluid between the primary circuit and the accumulator tank according to the primary circuit pressure to raise the primary circuit pressure towards a desired pressure. The hydraulic pressure reserve system may include a primary gear connected from a primary drive and driving an auxiliary secondary gear with a primary drive clutch for connecting the secondary gear to drive the hydraulic pump and an auxiliary drive clutch for connecting the auxiliary secondary gear or a drive chain to drive the hydraulic pump.
摘要:
The invention relates to a thermocouple for sensing the temperature at a measurement point, comprising a first conductor that has a first end and a first terminal, and a second conductor that has a second end and a second terminal. The first end of the first conductor and the second end of the second conductor are in electric contact with one another at the measurement point, while the first terminal of the first conductor and the second terminal of the second conductor can each be connected to a terminal line. The first conductor and the second conductor are applied to a substrate using thick-film technology, the first end of the first conductor and the second end of the second conductor overlapping in at least some sections at the measurement point. A hot runner nozzle has a heater and a thermocouple according to the invention.
摘要:
The present invention relates to radiation-curable, aqueous dispersions based on polyurethane acrylates (i), which are characterized in that the polyurethane acrylate (i) comprises as builder components A) one or more aromatic polyepoxy(meth)acrylates with an OH number of from 20 to 300 mg of KOH/g of substance, C) one or more oligo- or polyesters containing unsaturated fatty acids with an OH number of from 15 to 300 mg of KOH/g of substance and an iodine number of greater than 50 g of I2/100 g of substance, E) one or more compounds with at least one group which is reactive towards isocyanate and additionally at least one group having a hydrophilizing action and F) one or more organic polyisocyanates, a process for the preparation thereof, the use of the coating compositions as lacquers and/or adhesives, and objects and substrates provided with these lacquers and/or adhesives.
摘要:
The present invention relates to radiation-curable coating compositions based on tin-free aqueous polyurethane dispersions based on polyurethane acrylates (i), characterized in that the polyurethane acrylate (i) comprises as builder componentsA) one or more compounds with at least one group which is reactive towards isocyanate and at least one unsaturated group which can undergo free radical polymerization,B) one or more compounds which differ from A) and have at least one group which is reactive towards isocyanate,C) one or more compounds with at least one group which is reactive towards isocyanate and additionally at least one group having a hydrophilizing action,D) one or more organic polyisocyanates,which are reacted in the presence ofF) bismuth(III) salt(s) andG) an acid having a pKa of
摘要:
Aqueous UV-hardenable dispersions are provided, as well as their use for the production of coating agents, in particular coatings for ligneous substrates. The dispersions comprise the reaction product of a) one or more polyisocyanates of which at least one polyisocyanate is an oligomeric polyisocyanate of hexamethylene diisocyanate with urethane, biuret, iminooxadiazindione and/or isocyanurate structural units, b) one or more monohydroxy-functional compounds containing (meth)acryloyl groups, c) at least one component c1), which has a hydrophilising effect on the basis of incorporated (potentially) ionic groups and comprises at least one further isocyanate-reactive group and/or at least one component c2) which contains non-ionically hydrophilically acting groups and comprises at least one further isocyanate-reactive group, d) one or more difunctional and/or polyfunctional amines or hydroxyamines as chain extender, and e) optionally other monomeric, oligomeric and/or polymeric substances, which may optionally also contain further unsaturated groups.
摘要:
For testing or for characterizing output drivers of output circuits of high-speed semiconductor memory devices under conditions close to an application, scan elements are provided at the inputs of the output circuits. The scan elements in each case have a register function and are cascaded to form a scan chain. Via the scan chain, test data signals are applied to the inputs of the output circuits whilst bypassing a memory cell array of the semiconductor memory devices. The characterization of data signals of the high-speed semiconductor memory devices that are output by the output circuits requires only a test memory controller not connected to the data signal terminals and a passive load simulation of the application memory controller.
摘要:
The invention describes a method and a device for controlling a drive train of a motor vehicle with a drive assembly and a continuously variable automatic transmission with a variable speed gear, wherein an electronic control unit for controlling at least the continuously variable automatic transmission and an emergency device are provided, with this unit being activated in the event of failure of the electronic control unit and a constant pressure/force ratio being established in the variable speed gear. Pursuant to the invention, in the event of failure of the electronic control unit the frictional connection between the drive assembly and the continuously variable automatic transmission is interrupted before the emergency driving mode is made available through the emergency device by re-establishing the frictional connection.
摘要:
The invention is directed to a level control system for a motor vehicle wherein the controllable valves (8a to 8d and 10) are controlled by a first control unit (24). The first control unit (24) transmits a signal to a second control unit (36) at time intervals. If the second control unit (36) does not receive the signal expected from the first control unit, then the second control unit (36) assumes the control of the valves (8a to 8d and 10) in such a manner that the motor vehicle is transferred into a dynamically safe driving condition.
摘要:
The invention relates to a thermocouple for sensing the temperature at a measurement point, comprising a first conductor that has a first end and a first terminal, and a second conductor that has a second end and a second terminal. The first end of the first conductor and the second end of the second conductor are in electric contact with one another at the measurement point, while the first terminal of the first conductor and the second terminal of the second conductor can each be connected to a terminal line. The first conductor and the second conductor are applied to a substrate using thick-film technology, the first end of the first conductor and the second end of the second conductor overlapping in at least some sections at the measurement point. A hot runner nozzle has a heater and a thermocouple according to the invention.