Preliminary studies on the braking efficiency of an engine working in combined Jake brake and exhaust brake regime

7th Modern Technologies in Industrial Engineering

工业技术（总论）

Manolache-Rusu, I.C.^1 ; Glovnea, M.^1 ; Suciu, C.^1

Stefan Cel Mare University, Faculty of Mechanical Engineering Mechatronics and Management, Department of Mechanics and Technologies, 13 University Street, Suceava

720229, Romania^1

关键词: Auxiliary braking;    Brake efficiencies;    Braking capacities;    Braking torque;    Heavy duty vehicles;    Reciprocating engines;    Simulation model;    Single cylinder engine;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/591/1/012056/pdf
DOI  :  10.1088/1757-899X/591/1/012056

学科分类：工业工程学

来源: IOP

【 摘 要 】

The improvements brought lately to heavy duty vehicles led to a decrease of their native retarding capacity. This difficulty is commonly compensated by the auxiliary braking systems such as the Jake brake or exhaust brake. The purpose of this study is to evaluate the behaviour of an auxiliary brake system consisting from a combination of an exhaust brake and a Jake brake. For this purpose, a simulation model was developed to evaluate the retarding power of a single-cylinder engine that works at the same time in Jake brake and exhaust brake mode respectively. The present article deals with five study cases, at constant engine speed, for a better comparison of the braking torques obtained for each operation mode of the I.C. engine. Simulations performed on the studied engine in Jake brake mode, provide an increase in braking efficiency, compared to the brake efficiency when it is used in exhaust brake mode. Obtained results show a significant increase in braking capacity for the case of a single cylinder engine, when the two auxiliary braking systems are simultaneously used. The proposed model can be used to optimize braking performance to the any reciprocating engines that presents an engine brake or an exhaust brake system.