Inertial Continuously Variable Transmissions and Ways to Improve Their Performance

Aliukov, Sergei; Keller, Andrei; Alyukov, Alexander

doi:10.4271/2018-01-1059

Cited by 6 publications

(3 citation statements)

References 19 publications

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“…Figure (9) illustrates the angular speed output of the output axis when the grooved wheels are connected via the ratchets to the axis. The figure demonstrates that the angular speed of the output is almost consistent at the conclusion of the raised wheel peed period with tiny fluctuating values.…”

Section: Figure (3): Grooved Wheelmentioning

confidence: 99%

“…Raja Ramanujam states: [7] Innovated with the CVT (Continuously Variable Transmission), a transmission that does not use friction as a means of transmitting power. Aliukov et al (2017) [8] and Aliukov et al (2018) [9] presented a CVT-type transmitter device and compared it to a mathematical model. while Benitez and Madrigal (2004) [10] The following results provide significant evidence of a CVT-type transmission device being realistically implemented and an established mathematical model that correlates theoretical and simulation results in this device.…”

Section: Introductionmentioning

confidence: 99%

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Cam based Infinitely Variable Transmission Theoretic Modelling

Faleh

Al-Hamood

Majeed

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Infinitely variable transmission (IVT) is a system which delivers the ratio between two turning elements to a continuous (non-discrete) variation (including zero). This article uses Solidworks software to build and simulate a cam-based IVT system. There are two identical units in the system under examination. Each unit comprises a cam with an oscillating slot connection that swings on a hinge and can be vertically shifted by changing the transmission rate. This modifier can be a power screw or a hydraulic ram. In addition, a grooved wheel and followers or an actuator are included in the system units. The raised wheels swing rotating movement, such that they are coupled by a single-way clutch to the output shaft (ratchet) to move the output shaft one way. During the performance research, cam shapes are considered and examined inside the mechanism. a mixture of the unchanging speed and 1-5 polynomial shapes, used for the current investigation and tailored for The results produced from the simulation generally reveal the theoretical results expected in accordance with the layout of the current IVT system. For all parts in these units, the findings imply a uniform velocity while each unit is powered. In this investigation, nevertheless, the ratchets used cause remarkable fluctuations in the angular speed of the output axis. Further research is therefore urgently needed in the choice and investigation of more efficient ratchets.

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Section: Figure (3): Grooved Wheelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Cam based Infinitely Variable Transmission Theoretic Modelling

Faleh

Al-Hamood

Majeed

2022

IOP Conf. Ser.: Earth Environ. Sci.

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“…Another type of ratcheting CVT is the inertial system that was introduced and studied in [14,15]. This type of CVT is based on the principle of inertia, which has many advantages, like compactness and minimum friction losses, in addition to its ability to protect the engine during overload.…”

Section: Introductionmentioning

confidence: 99%

Modeling and theoretical analysis of a novel ratcheting-type cam-based infinitely variable transmission system

Al-Hamood

Jamalia

Imran

et al. 2019

Comptes Rendus. Mécanique

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An infinitely variable transmission (IVT) is a system that allows for a continuous (nondiscrete) variation (including zero) in transmission ratio between two rotating elements. In this paper, a novel ratcheting-type IVT mechanism is presented and its geometrical design and kinematic analysis are studied in details. The proposed system contains two identical units. Each unit includes a cam with a follower, oscillatory slotted links pivoted at a shaft that can be moved vertically by a hydraulic ram (alterable transmission ratio), and a grooved wheel with an actuating rod. The input rotational motion is converted through each unit to an oscillatory angular motion of controlled amplitude. This resulting motion is rectified using a ratchet to get a unidirectional output rotational motion. Therefore, the system output motion will have a different velocity and acceleration than those of the system input. The kinematic analysis revealed that the transmission ratio can be varied continuously in a range from zero to infinity. The analysis also showed that, for particular transmission ratios, the system gives uniform output (angular velocity and acceleration) for a corresponding uniform input.

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Considerations on the operation of inertial continuous variable transmissions

Morales

Benítez

2020

Mechanism and Machine Theory

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Inertial Continuously Variable Transmissions and Ways to Improve Their Performance

Cited by 6 publications

References 19 publications

Cam based Infinitely Variable Transmission Theoretic Modelling

Cam based Infinitely Variable Transmission Theoretic Modelling

Modeling and theoretical analysis of a novel ratcheting-type cam-based infinitely variable transmission system

Considerations on the operation of inertial continuous variable transmissions

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