Intelligent automatic stoppage and restart of motor vehicle engine

摘要

An automatic stoppage and restart of a motor vehicle engine is conducted when the vehicle is standstill in normal traffic for fuel conservation and reduction of toxic emissions. In bumper-to-bumper traffic, the automatic stoppage of the engine is prohibited for vehicle battery energy conservation to avoid occurrence of situation where repeated engine stoppage and restart might cause a considerable reduction in the charging level of the vehicle battery. According to the first preferred implementation of the present invention, traffic information obtained through vehicle navigation system is used to determine whether a vehicle is on a congested roadway. According to the second preferred implementation of the present invention, vehicle speed is used to evaluate the pattern of traveling of a vehicle to determine whether or not the vehicle is in bumper-to-bumper traffic.