Vehicle idling start and stop control system and method

By designing a vehicle idle start-stop control system in commercial vehicles that monitors multiple signals and combines an enhanced starter and engine flywheel ring gear, the problems of high idle speed fuel consumption and large exhaust emissions of commercial vehicles are solved, and safe and reliable idle speed control is achieved , reducing fuel consumption and emissions.

CN108622068AInactive Publication Date: 2018-10-09SHAANXI AUTOMOBILE GROUP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHAANXI AUTOMOBILE GROUP
Filing Date
2017-03-15
Publication Date
2018-10-09
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The commercial vehicle field lacks an effective idle start-stop control system, resulting in high idle speed fuel consumption and increased exhaust emissions, and the risk of battery loss is difficult to control.

Method used

A vehicle idle start-stop control system is designed to identify the driver's control intention by monitoring multiple signals of the vehicle (such as engine water temperature, battery capacity, air conditioning operating signal, vehicle speed, clutch, brake pressure, etc.) and use the hand brake The signal is used as the idle stop triggering condition, and the clutch release signal is used as the initial starting triggering condition. Combined with the enhanced starter and engine flywheel ring gear, it ensures the safety and reliability of the system.

Benefits of technology

It achieves low-cost, safe and reliable idling start-stop control for commercial vehicles, significantly reduces idling running time, reduces fuel consumption and emissions, and has significant economic and environmental benefits.

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Abstract

The invention discloses a vehicle idling start and stop control system and method. The control system judges whether a vehicle has idling start and stop conditions by monitoring the water temperatureof an engine, the capacity of a storage battery, a safety belt and other information, judges whether the vehicle has conditions of stopping the engine by monitoring the rotating speed of the engine, the speed of the vehicle, the brake air pressure and other conditions, and judges whether the vehicle has conditions of starting the engine by monitoring the gear of a gearbox, the speed of the vehicle, a hand brake and other information. When the relevant conditions are met, start and stop work signals are sent to the engine though a CAN bus. In order to guarantee the reliability of frequent startand stop of the engine, the system strengthens flywheel gear rings of a starter and the engine. In order to ensure that the battery does not lose power, a storage battery capacity sensor is added tothe system on the basis of increasing the capacity of the storage battery, and the idling start and stop are allowed when the state of charge (SOC) of the storage battery satisfies a safe starting threshold. The idling start and stop control system has advantages of low cost and high reliability, and is especially suitable for commercial vehicles.
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