Analiza prekidača startera solenoida automobila

The purpose of this paper is to present an experimental study of simple geometries representing the electrical contact in automotive connectors when current passes through them.  The starting system is designed to provide the vehicle operator with a convenient, efficient and reliable means of cranking and starting the internal combustion engine used to power the vehicles and all of its accessory systems from within the safe and secure confines of the passenger compartment. The starting system consists of two separate circuits, high amperage circuit (150A - 350A) and low amperage circuit (< 20A). Since foresaid circuit involves high current low voltage system, the starter motor solenoid contact will observe high current at their contacts. So this high current makes pitting effect and lead to increase in solenoid contact resistance. Due to increased contact resistance the starter motor may not produce sufficient torque and leads to overloading of battery due to successive attempts. In order to overcome this problem, a new model for solenoid switch contact has been developed using finite element modelling method ANSYS Parametric Design Language to reduce the internal resistance of the battery due to overloading because of increased contact resistance at the solenoid contact points. The obtained results are useful for finding a compromise between the electrical and mechanical aspects for a power connector and to help manufacturers to decrease the weight and the electrical contact resistance of their connectors.U ovom članku namjera je prikazati jednostavnu eksperimentalnu analizu električnog kontakta u automobilskim kontaktima kada vode struju. Sustav za paljenje je dizajniran je kako bi osigurao vozaču praktičan, učinkovit i pouzdan način paljenja motora s unutarnjim izgaranjem. Sustav za paljenje sastoji se od dva odvojena kruga, krug s jakom strujom (150 A - 530 A) i slabom stujom (< 20A). Kako spomenuti krug podrazumijeva krug s jakim stujama i niskim naponom, kontakt solenoida će na krajevima davati velike iznose stuja. Ta će struja uzrokovati povećanje otpora kontakta. zbog povećanog otpora kontakta starter možda neće proizvesti dostatan moment što će dovesti do preopterećenja baterije. Kako bi se riješio navedeni problem, razvijen je novi model kontakta solenoida koristeći modeliranje konačnim elementima (ANSYS Parametric Design Language). Dobiveni rezultati korisni su kako bi se pronašao kompromis između električnih i mehaničkih aspekata i kako bi se pomoglo proizvođačima da smanje težinu i otpor konektora električnog kontakta