摘要:
A method for detecting an electrical fault in an electrical network of a motor vehicle, the network having at least one battery, at least one pulse-controlled inverter and at least one d.c. voltage converter, and an intermediate circuit current associated with the pulse-controlled inverter being detected with the aid of an intermediate circuit current sensor. A battery current associated with the battery is detected with the aid of a battery current sensor and a d.c. voltage converter current associated with the d.c. voltage converter is detected with the aid of a d.c. voltage converter current sensor, and the magnitude of the detected intermediate circuit current is compared with an intermediate circuit current determined by calculation with the aid of the battery current sensor and the d.c. voltage converter current sensor to check whether a specifiable deviation has been exceeded. A method for detecting an electrical fault in an electrical network of a vehicle that is not current-based, but rather voltage-based.
摘要:
The use of terpenes for reducing the pheromone action on Lepidoptera and a method which allows terpenes to act on the habitat of the Lepidoptera are described.
摘要:
A process for preparing a mixture of 8E,10E-dodecadienol (Ia), 8E,10Z-dodecadienol (Ib), 8Z,10E-dodecadienol (Ic) and 8Z,10Z-dodecadienol (Id),H.sub.3 C--CH.dbd.CH--CH.dbd.CH--(CH.sub.2).sub.6 --CH.sub.2 --OH(8E,10E=Ia)(8E,10Z=Ib)(8Z,10E=Ic)(8Z,10Z=Id)starting from 1,8-octanediol (II) which is converted with a halogenating agent into (III)Hal-CH.sub.2 --(CH.sub.2).sub.6 --CH.sub.2 --OH (III)where (III) is subsequently reacted with (IV),H.sub.2 C.dbd.CH--O--R (IV)to give (V)Hal-CH.sub.2 --(CH.sub.2).sub.6 --CH.sub.2 --O--CH(CH.sub.3)--OR(V),(V) is converted in the presence of magnesium and crotonaldehyde into (VI)H.sub.3 C--CH.dbd.CH--CH(OH)--(CH.sub.2).sub.8 --O--CH(CH.sub.3)--OR(VI)and the protective group R and the hydroxyl group are simultaneously eliminated from (VI) in the presence of acid, novel intermediates for this process, and methods for controlling the codling moth Cydia pomonella by interfering with mating using this mixture are described.