摘要:
To improve uniformity of heating of a sensor element carried on a plate-like carrier, in which electrodes are applied to one or both of the major surfaces of a carrier plate to form the sensor element, the heater element is constructed in form of a zig-zag or meander track surrounding the flat electrodes and positioned adjacent the edge portion of the carrier plate, so that, in a direction transverse to the major plane of the carrier plate, the heater element will be positioned closely adjacent the electrode, and prevent the formation of temperature gradients which might lead to fissures or breaks in the elements of the sensor construction.
摘要:
A method and an electronic circuit for regenerating an electrical contact are provided in order to remedy the problem of electrical contacts becoming highly resistive over time. Electrical contacts become highly resistive over time, particularly when the contacts are thermally highly stressed and/or exposed to corrosive gases. To remedy this undesired effect and to reestablish the low resistance of the contacts, an electrical regenerating signal is applied to these contacts.
摘要:
There is provided a process for the continuous production of pentanediol-1,2 comprising epoxidizing pentene in a completely homogeneous phase with perpropionic acid in benzene to 1-pentene oxide and directly saponifying the pentene oxide-1 without isolation. High yields and a high degree of purity of pentanediol-1,2 are obtained.
摘要:
A control apparatus for a fuel supply system for mixture-compressing, externally ignited internal combustion engines is proposed, which serves to interrupt the fuel supply to the engine during overrunning. The control apparatus comprises sensors which furnish signals according to the attitude of the throttle valve, as well as the rpm of the internal combustion engine and the temperature of a catalytic converter situated in the exhaust pipe, and further comprises means for the evaluation of these signals as well as for the interruption of the fuel supply to the internal combustion engine and the introduction of supplementary air during overrunning at catalytic converter temperatures above the proper operating temperature for that device.