驻车系统关键参数分析及计算

Parking Lock System Key Performance Study and Analysis

驻车系统是自动变速器和新能源减速器中的安全装置,对保证整车安全起关键作用。文章以新能源减速器驻车系统设计为例,从驻车系统棘爪保持非P能力、棘爪防自锁、驻车安全锁止、最大出P力、"拒绝溜坡"车速及制动距离等方面提出了性能要求。作者根据自身经验,引入——防自锁系数、锁止系数等,优化了数学模型,希望为后续驻车系统开发提供一定指导。

The parking lock system is an important safety subsystem in both automatic transmission and electric vehicle. This purpose of this paper is to explain the requirements in the design phase, including anti-self lock of parking pawl, keeping NP capability of parking paw, safe parking, pull-out force. The paper introduces new concept--anti-self lock coefficient and lock-up coefficient, and optimizes the mathematical model, which could provide a reference for parking lock system analysis.