Designing the main controller of auxiliary braking systems for heavy-duty vehicles in nonemergency braking conditions

Zheng, Hongpeng; Lei, Yulong; Song, Panpan

doi:10.1177/0954406217706386

Cited by 9 publications

(6 citation statements)

References 10 publications

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“…2 When only the service brake is involved in braking conditions, long-term usage can lead to heat recession and significantly reduced braking capacity. [3][4][5][6] Auxiliary brake is an effective technology to improve the braking safety of vehicles. It has become standard equipment due to its ability to provide fade-free stopping ability while reducing the wear on wheel brakes in many markets around the word.…”

Section: Introductionmentioning

confidence: 99%

Development of a variable mode valve actuation system for a heavy-duty engine

Wang

Long

Cui

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part D:

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A new variable mode valve actuation system for a heavy-duty engine was proposed and designed in this paper. The variable mode valve actuation system can significantly enhance braking safety and improve fuel economy and emission of heavy-duty engines through flexible switching among four-stroke driving mode, two-stroke compression-release braking mode, and cylinder deactivation mode on a conventional four-stroke engine. The switching was controlled by four-stroke driving modules and two-stroke braking modules, both of which have two operation states: effective state and failure state. For the control of the multi-cylinder engine, all cylinders can be divided into several groups, and all the four-stroke driving modules in the same group were controlled by one solenoid valve, as well as all the two-stroke braking modules were controlled by another solenoid valve. A hydraulic-mechanical multi-body dynamics model was established to investigate the switching response of the variable mode valve actuation system. The results indicated that when the engine operated at 2000 r/min, the switching of the four-stroke driving module and the two-stroke braking module required 30 °CA and 101 °CA at most, respectively. In addition, to avoid the conflict between the four-stroke driving valve lift and the two-stroke braking valve lift, the switching between the four-stroke driving mode and the two-stroke compression-release braking mode must have a reasonable sequence. The variable mode valve actuation system has an excellent switching response and it is convenient for the control of the multi-cylinder engine. Therefore, the variable mode valve actuation system has a good application prospect for heavy-duty engines.

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Section: Introductionmentioning

confidence: 99%

Development of a variable mode valve actuation system for a heavy-duty engine

Wang

Long

Cui

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part D:

View full text Add to dashboard Cite

show abstract

“…7 Longer term use of service brake can easily lead to overheating and it will wear much faster once hot, which significantly reduced braking capacity. 8–11 Moreover, auxiliary brake is an effective technology to improve braking safety and productivity of vehicle, which can reduce the use of service brake on downhill grades as well as level land and reduce the cost of brake maintenance, repairs, and associated downtime. 12,13 In many markets around the world, auxiliary brake has become standard equipment due to its ability to provide fade-free stopping ability while reducing the wear on wheel brakes.…”

Section: Introductionmentioning

confidence: 99%

“…In general, auxiliary brake devices can be divided into two main categories: engine brake and engine accessories brake. 11 Engine accessories brake includes eddy current retarders, hydraulic retarders, and air brake systems. 17–21 These retarders can obtain high-peak braking power, but they have drawbacks including low reliability, large installation space, and braking power rapid attenuation with the increase in working time.…”

Section: Introductionmentioning

confidence: 99%

Research on two-stroke compression release braking performance of a variable mode valve actuation system

Wang

Long

Cui

et al. 2019

International Journal of Engine Research

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In order to enhance the braking safety and improve the fuel economy and emission of heavy-duty engines, a variable mode valve actuation system which can switch operation modes flexibly among four-stroke driving, two-stroke compression release braking, and cylinder deactivation modes on a four-stroke engine was developed in this article. The switching was controlled by the four-stroke driving module and the two-stroke braking module, both of which have two states: effective state and failure state. Besides, a full-cycle numerical model of a six-cylinder turbocharged engine was established for the performance analysis of two-stroke compression release braking mode. The orthogonal design method was introduced in the present study to obtain the optimum valve parameters which can result in high braking power and maintain the maximum cylinder pressure at a lower level at the same time. Then, the two-stroke compression release brake braking power with the optimum valve parameters was compared with four-stroke compression release braking power. Meanwhile, the two-stroke braking cam profile of the variable mode valve actuation system was designed according to the optimum valve parameters, and the two-stroke braking performance with the dynamic valve lift of the variable mode valve actuation system was validated by the numerical model including the hydraulic system. The results indicated that a higher engine speed leads to higher braking power at the same valve lift. Besides, two-stroke compression release brake braking power of the variable mode valve actuation system achieved 525.3 kW at 2600 r/min and 358.1 kW at 1900 r/min, 52.9% and 71.3% higher than four-stroke compression release braking power, respectively. Although the two-stroke compression release brake braking power with dynamic valve lift is slightly less than that with the optimum valve parameters, it is still much higher than that of the four-stroke compression release braking power. Therefore, it has a good application prospect for heavy-duty engines.

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“…Zheng et al. 11 introduced a novel auxiliary braking system involving a water medium retarder for heavy-duty vehicles. The control logic of the auxiliary braking system was assigned, and a main controller was designed to dynamically manage the entire braking process using MATLAB/Simulink.…”

Section: Introductionmentioning

confidence: 99%

“…Lei et al 10 established a theoretical model of a hydrodynamic retarder based on the dynamic analysis of vehicle driving downhill and adopted fuzzy control logic to control the braking torque of the vehicle with the proposed oil-charging ratio controller of hydrodynamic retarder. Zheng et al 11 introduced a novel auxiliary braking system involving a water medium retarder for heavy-duty vehicles. The control logic of the auxiliary braking system was assigned, and a main controller was designed to dynamically manage the entire braking process using MATLAB/ Simulink.…”

Section: Introductionmentioning

confidence: 99%

Braking characteristics integrating open working chamber model and hydraulic control system model in a hydrodynamic retarder

Wei

Kong

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part C:

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Hydraulic control system has important influence on the steady and transient braking performance of a hydrodynamic retarder. The braking characteristics of hydrodynamic retarder regulated by hydraulic control system should be investigated first, before designing and making the braking strategy and control method. The accurate and detailed braking characteristics models of open working chamber and hydraulic control system are established, integrated, and validated by steady and dynamic experimental data. Based on full factorial design experimental method, the influence of control parameters on braking performance achieving steady state is analyzed with parameter sensitivity, and the effect of control parameters on braking response characteristics is conducted. Then the influence of different tube lengths between working chamber and hydraulic control system on braking performance is discussed and analyzed. The results show the control pressure and rotor rotational speed both have significant impact on braking characteristics with obvious nonlinear, coupling, and interaction effect. The longer response time of hydraulic control system will be for the larger braking torque. Shortening the tube lengths as much as possible is needed to improve the braking torque, cooling flow rate, and system integration.

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Designing the main controller of auxiliary braking systems for heavy-duty vehicles in nonemergency braking conditions

Cited by 9 publications

References 10 publications

Development of a variable mode valve actuation system for a heavy-duty engine

Development of a variable mode valve actuation system for a heavy-duty engine

Research on two-stroke compression release braking performance of a variable mode valve actuation system

Braking characteristics integrating open working chamber model and hydraulic control system model in a hydrodynamic retarder

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