Mild Hybrid structure for car drive system

W artykule opisano początkowy etap konstrukcji napędu hybrydowego samochodu o strukturze Mild Hybryd. System ten pozwoli m.in. na automatyczne wyłączanie silnika spalinowego podczas postoju (w korku, na czerwonym świetle) a następnie ponowne szybkie załączenie. Zaprezentowano wybrane wyniki badań procentowych udziałów podstawowych faz cykli ruchu jazd testowych miastach śląska. Pomiary przeprowadzano na trasie Gliwice - Zabrze, w Zabrzu oraz Gliwicach. Przedstawiono badania superkondensatora w procesie rozruchu silnika spalinowego.The paper describes initial stages of Mild Hybrid drive system design. This type of drive uses a traditional electric unit consisting of a battery, a starter and an alternator. This system, appropriately adapted, for instance by increasing its overall rated power and supplementing it with novel energy control procedures, can operate in a manner similar to hybrid car drives. Mild Hybrid system utilises standard components used in cars - i.e. starter and alternator. A supercapacitor will be introduced as a new component. Its role is to operate as energy accumulator for IC engine start-ups. A traditional car battery will also assume a new function, that of heating IC engine. Automobile Stop & Go System makes it possible to switch off the IC engine automatically when a vehicle stops (e.g. at red light or in traffic hold-ups) and then to switch it on quickly again. This results in decreasing the fuel consumption and carbon dioxide emission, particularly in towns. Within the framework of this study, there were taken the road measurements whose aim was to determine the real driving cycles. The results of supercapacitor performance during IC engine start-ups are presented in the paper. Several tens of IC engines start-ups were conducted, with the starter supplied from a traditional standard lead-acid battery (Centra Futura 055 290, C20=55Ah); next, similar tests were run using the supercapacitor (MAXWELL BPAK 15V 58F). The energy consumption at start-up and the start-up time were calculated