TY - JOUR
T1 - Shifting control strategy of deceleration braking for automated mechanical transmission vehicle
AU - Zhu, Min
AU - Liu, Haiou
AU - Wang, Erlie
AU - Chen, Huiyan
N1 - Publisher Copyright:
© 2015 Journal of Mechanical Engineering.
PY - 2015/1/20
Y1 - 2015/1/20
N2 - Braking conditions are divided into three categories: ordinary braking, emergency braking and inertia braking, then a research about the characteristics of manual transmission(MT) vehicle excellent drivers' manipulation in different braking conditions is made. The conditions of ordinary braking and emergency braking are classified as deceleration braking, and then begin the study of the automated mechanical transmission(AMT) vehicle. Combined with a heavy off-road vehicle's parameters and test data, a detailed analysis of the characteristics of Position-type electronically controlled diesel engine is carried out. Then the concept of the natural descending rate of engine speed when throttle is closed is put forward, to slow down or speed up the rate due to external reasons, the engine will produce torque to hinder this movement trends. On the basis of a detailed analysis of the drive system dynamics model of the braking process, the role of engine in different braking conditions is discussed. According to the engine speed and the rate of its decline, the transmission output shaft speed and the rate of its decline, the current gear, clutch state and brake signal, ordinary braking and emergency braking is distinguished, and a shifting control strategy for AMT vehicle in deceleration braking conditions is established. It's verified by road test in finally.
AB - Braking conditions are divided into three categories: ordinary braking, emergency braking and inertia braking, then a research about the characteristics of manual transmission(MT) vehicle excellent drivers' manipulation in different braking conditions is made. The conditions of ordinary braking and emergency braking are classified as deceleration braking, and then begin the study of the automated mechanical transmission(AMT) vehicle. Combined with a heavy off-road vehicle's parameters and test data, a detailed analysis of the characteristics of Position-type electronically controlled diesel engine is carried out. Then the concept of the natural descending rate of engine speed when throttle is closed is put forward, to slow down or speed up the rate due to external reasons, the engine will produce torque to hinder this movement trends. On the basis of a detailed analysis of the drive system dynamics model of the braking process, the role of engine in different braking conditions is discussed. According to the engine speed and the rate of its decline, the transmission output shaft speed and the rate of its decline, the current gear, clutch state and brake signal, ordinary braking and emergency braking is distinguished, and a shifting control strategy for AMT vehicle in deceleration braking conditions is established. It's verified by road test in finally.
KW - Automated mechanical transmission
KW - Brake conditions
KW - Emergency braking
KW - Ordinary braking
KW - Shifting control strategy
UR - http://www.scopus.com/inward/record.url?scp=84924756045&partnerID=8YFLogxK
U2 - 10.3901/JME.2015.02.110
DO - 10.3901/JME.2015.02.110
M3 - Article
AN - SCOPUS:84924756045
SN - 0577-6686
VL - 51
SP - 110
EP - 116
JO - Jixie Gongcheng Xuebao/Chinese Journal of Mechanical Engineering
JF - Jixie Gongcheng Xuebao/Chinese Journal of Mechanical Engineering
IS - 2
ER -