Optimal matching between a diesel engine and a PRHTS transmission

Wang, Huan; Sun, Dongye

doi:10.1007/s40430-017-0741-9

Cited by 14 publications

(13 citation statements)

References 22 publications

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“…The solution c has an advantage of energy saving over the schemes proposed in [7,12]. Although the optimal solution c is only verified in the typical operating mode, it can provide an energy saving advantage over the prototype TC in other operating modes as well.…”

Section: Discussionmentioning

confidence: 97%

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Achievement of Fuel Savings in Wheel Loader by Applying Hydrodynamic Mechanical Power Split Transmissions

et al. 2017

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Abstract:The fuel economy of wheel loaders is deeply affected by the efficiency of their propelling transmissions, however, the torque converter (TC) in existing propelling transmissions is a low-efficiency component and leads to excessive energy consumption. Accordingly, this paper replaces the TC with a hydrodynamic mechanical power split transmission (HMPST) for improving the fuel economy of wheel loader. Based on probability similarity theory, the typical operating mode for the vehicles is constructed, which is used to evaluate the energy consumption performance of the selected solutions. The four reasonable solutions, which can be initially applied to wheel loaders, are selected from among the HMPSTs using the lever diagram. Furthermore, the comparisons on efficiency and loading characteristics between these four solutions and a prototype TC are conducted. The design optimization for all the four solutions is implemented, in order to find the optimal fuel saving solution relative to the prototype TC, and only one solution with pure power split can meet the constraints. Finally, a simulation model of the wheel loader powertrain is established for validating the effectiveness of this optimal solution. The results show that the optimized solution can effectively improve the fuel economy of wheel loaders compared to the prototype TC and provides a novel substitute for current technology.

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Section: Discussionmentioning

confidence: 97%

“…However, a simulation model for the wheel loader powertrain system was not constructed, so whether the performance of the vehicle is increased needs to be justified. Moreover, such a transmission is only one type of HMPST and its rationality relative to other schemes requires to be verified as well [12].…”

Section: Introductionmentioning

confidence: 99%

Achievement of Fuel Savings in Wheel Loader by Applying Hydrodynamic Mechanical Power Split Transmissions

et al. 2017

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“…The motor control system is made up of electronic devices. Its main function is to manage the flow of electric power [8].…”

Section: Theory Of Power Machine Step Less Transmissionmentioning

confidence: 99%

Control Strategy of Electric Machinery Stepless Transmission System

2018

IJOMAM

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In order to solve the problem of the dynamic matching of the step less transmission system, the power machine step less transmission on the electric vehicle was studied. The double motor was used as the power source. The main motor M1 mainly provided the driving force. The speed regulating motor M2 was used to adjust the output speed. The speed range was wide, and the quality was light. The system flexibility was high. The basic performance of the permanent magnet synchronous motor for vehicle was introduced. According to the actual design requirements, the transmission scheme was selected, and the transmission principle was designed. The corresponding characteristic parameters of the transmission system were calculated. According to the driving demand under different working conditions, the control structure of the step less transmission system was designed. The test bench was built to test the power machine step less transmission. According to the working point and resistance load at different speed, the test bench was driven and loaded. The characteristic data of the transmission system in the stable running state were collected and analyzed. The results showed that the step less transmission system had stable step less speed regulation. Therefore, the method provides high transmission efficiency.

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“…For a single Belleville spring, the extent of pre-compression is conveyed in relation (21) and the constraint for the extent of compression is conveyed in relation (22). The ratio of the external diameter to the thickness should satisfy relation (23), and the ratio of the external diameter and the internal diameter should satisfy relation Eq. (24).…”

Section: Constraintsmentioning

confidence: 99%

“…The genetic algorithm is used in this study to optimize the parameters of the Belleville springs. The basic steps of the genetic algorithm are described as follows [23]. First, the range of the optimization variables is bounded, and 80 groups of optimization variables are randomly selected from the bounded range to form an initial population, which usually includes 20-100 individuals.…”

Section: Optimization Algorithmmentioning

confidence: 99%

Forward parameter optimization design for actuator of electromechanical continuously variable transmission

Sun

Liu

2018

J Braz. Soc. Mech. Sci. Eng.

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An electromechanical continuously variable transmission (EMCVT) with an actuator containing two direct current (DC) motors is proposed to improve the transmission efficiency of a continuously variable transmission (CVT) by reducing the power consumed by the CVT actuator. To enhance the EMCVT efficiency, the ratio and driven pulley clamping force are adjusted using an electromechanical actuator. It is required that the adjustable range of the driven pulley clamping force of the EMCVT is maximized and the operating power of the DC motors in the actuator is minimized. However, this adjustable range is limited when the actuator is designed for the maximum required driven pulley clamping force. To ameliorate this issue, the electromechanical actuator is optimized in this paper. The structure and operating principles of the EMCVT are illustrated, and the main actuator part models are built. Accordingly, the design principle of the main actuator parts is determined. The required clamping force for four standard driving cycles is considered, and the structural parameters of Belleville springs in the actuator are optimized using a genetic algorithm. Two DC motors are suitably selected, and the mechanical transmission system of the actuator is determined. The optimization results show that the adjustable range of the driven pulley clamping force is increased by over 80% for a high CVT ratio and that the energy consumed by the actuator is reduced for ECE and EUDC driving cycles by ~ 56% and ~ 28%, respectively, as compared to the energy consumed by the actuator before optimization.

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Optimal matching between a diesel engine and a PRHTS transmission

Cited by 14 publications

References 22 publications

Achievement of Fuel Savings in Wheel Loader by Applying Hydrodynamic Mechanical Power Split Transmissions

Achievement of Fuel Savings in Wheel Loader by Applying Hydrodynamic Mechanical Power Split Transmissions

Control Strategy of Electric Machinery Stepless Transmission System

Forward parameter optimization design for actuator of electromechanical continuously variable transmission

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