Development of a Hybrid Powertrain System Using CVT in a Minivan

Oba, Hidehiro; Yamanaka, Akihiro; Katsuta, Hiroshi; Kamichi, Kensuke

doi:10.4271/2002-01-0991

Cited by 9 publications

(8 citation statements)

References 1 publication

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“…A hybrid transmission mechanism named CCB2020 is introduced here as an FPG demonstration (Figure 2(a) and (b)). This hypothetical transmission that is created by the authors is based on THS 18 but has some extra configurations similar to THS-C. 5–7 The standard procedure to transform a transmission mechanism into an FPG is as follows: (1) Identify the power units (ICE, MG, and OUT (power output)), transmission units (G), clutching units (C and B), and the multi-DOF unit (PG) in the schematic diagram. (2) Use connection lines and couplers to present the relationships between all units.…”

Section: Methodsmentioning

confidence: 99%

“…Grounds and ordinary bonds appear in existing PGbased transmission mechanisms, such as the Toyota THS-C, [5][6][7] GM input-split system with two fixed transmission ratios, 22 and a Hyundai THS-like system with a fixed transmission ratio. 11 Grounds and ordinary bonds construct configurations other than power-split in these mechanisms.…”

Section: Elements To Construct New Configurationsmentioning

confidence: 99%

“…There are hybrid transmission cases that achieve several hybrid architectures, such as the two-mode hybrid 2MT70 transmission of General Motors (GM) 2 and the first-and second-generation GM Voltec hybrid transmissions (4ET50 and 5ET50). 3,4 In addition to GM, Toyota, [5][6][7][8][9][10] Hyundai, 11 and AVL 12 also proposed their hybrid transmissions. The publicly available information on the transmissions of GM and other companies explains their characteristics and features, but their mechanism design method and procedure are less mentioned.…”

Section: Introductionmentioning

confidence: 99%

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A design approach for multi-configuration hybrid transmission mechanisms

Chen

Liu

2020

Proceedings of the Institution of Mechanical Engineers, Part D:

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Several hybrid architectures have been widely used in hybrid electric vehicles. For example, power-split architecture brings seamless operation, while parallel architecture makes the internal combustion engine directly drive the wheel. To combine the advantages of various architectures, this study aims to develop a design approach to create a transmission mechanism that has multiple configurations and uses these configurations to achieve several hybrid architectures. First, this study standardized hybrid transmission mechanisms using the Function Power Graph; this powerful and intuitive tool inspired several elements and an element layout for the new mechanisms. Then, several configurations with up to five elements were enumerated and organized into the databases. Next, the mechanisms with multiple configurations and a limited number of clutching units (clutches or brakes) were evaluated, 10 of which were identified as the best group that provided five parallel configurations, two 2-motor electric vehicle configurations, and a power-split configuration. At the end of this paper, a novel hybrid transmission mechanism was developed as a demonstration. It provides higher power and torque at the output but there is no need to use the larger internal combustion engine or motor-generators. This mechanism also enables the internal combustion engine to drive in overdrive parallel architectures to avoid the loss in energy conversion when the power-split architecture is not required. As a result, after a designer specifies the desired hybrid configurations, follows the procedure, and uses the configuration databases built in this study, a novel hybrid transmission mechanism will be created.

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Section: Methodsmentioning

confidence: 99%

Section: Elements To Construct New Configurationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A design approach for multi-configuration hybrid transmission mechanisms

Chen

Liu

2020

Proceedings of the Institution of Mechanical Engineers, Part D:

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“…According to the combination of three powertrain components with four ports, there are four common types of connection: type-I, type-II, type-III and type-IV, as shown in Figure 12 To further improve the comprehensive operating performance of this architecture, Hu et al explored a single motor hybrid powertrain configuration with dual planetary gears based on Arrizo 7e by increasing the number of PG to two, details can be found in [37]. In addition, Toyota corporation launched their THS-C system in 2001 [73], consisting of THS and CVT. The THS-C system has a special single PG with two rows of planets sharing the same planetary carrier, and it is excluded from consideration of this paper.…”

Section: Type-c: Sem-phps With Compound Planetary Gears and No Other mentioning

confidence: 99%

Architectures of Planetary Hybrid Powertrain System: Review, Classification and Comparison

et al. 2020

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Increasing environmental issues and energy crises led to rapid developments of hybrid electric vehicles, especially the planetary hybrid powertrain system (PHPS). This paper presents a comprehensive review of the PHPS, focusing primarily on contributions in the aspect of configuration, classification and comparison. In this work, a new classification method for PHPS architectures is proposed according to the number of electric motors (EMs). In addition, two kinds of PHPS, in the new classification framework, are extensively emphasized in terms of its architectures, advantages and disadvantages. Furthermore, the port diagrams of representative architectures are presented to provide an intuitive method for power flow representation. Finally, a conclusion is made to provide an insight for developing PHPS as well.

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“…The control of the dynamic mode-switch process of hybrid electric vehicles (HEVs) has attracted extensive development interests in the automotive industry in recent years. [1][2][3][4][5] If the process is not controlled suitably, the power interruption or much fluctuation of the output torque may occur, which will finally affect the dynamic performance and ride comfort of the vehicle. [6][7][8][9] Currently, there are many valuable researches on the process of mode-switch about HEV around the world.…”

Section: Introductionmentioning

confidence: 99%

Control strategy for all the mode-switches of hybrid electric vehicle

Yang

Qin

Liu

et al. 2016

Advances in Mechanical Engineering

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This article focuses on the mode-switch control of a new type of full hybrid electric vehicle with a torque-limiting clutch and an overrunning clutch. The working mode regions of hybrid electric vehicle are divided according to the characteristics of the engine and motor. The target-required torque of the power source in each working mode is determined by a rule-based control strategy for optimal system efficiency. To reduce the torque fluctuation and improve the ride comfort of the vehicle, the coordinated torque control strategy has been proposed during the mode-switch process. The fuzzy control strategy of the oil pressure loaded on the torque-limiting clutch has been put forward. To improve the ride comfort during the mode-switch, the motor has been used for compensation of the rest of the vehicle-required torque according to the clutch-transmitted torque and the output torque of the engine. The dynamic model of the system in each mode-switch has also been established. The simulation has been conducted using MATLAB/Simulink platform for all the mode-switches. Furthermore, the experiment of the motor-assisted engine starting process with the proposed control strategy has been carried out. The result of the experiment is consistent with that of the simulation, and the control strategy proposed in this article is effective for the mode-switch control.

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Development of a Hybrid Powertrain System Using CVT in a Minivan

Cited by 9 publications

References 1 publication

A design approach for multi-configuration hybrid transmission mechanisms

A design approach for multi-configuration hybrid transmission mechanisms

Architectures of Planetary Hybrid Powertrain System: Review, Classification and Comparison

Control strategy for all the mode-switches of hybrid electric vehicle

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