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Shift on the fly transmission

a transmission and fly technology, applied in mechanical equipment, transportation and packaging, gears, etc., can solve the problems of undesirable clunk, poor noise, vibration and harness (nvh) factors and durability, and the operator cannot come to a complete stop, so as to reduce friction

Active Publication Date: 2019-08-20
TEAM INDS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

Enables seamless shifting between low and high gear ranges without stopping, reducing noise and vibration, and maintaining engine power across a wide speed range, improving durability and responsiveness.

Problems solved by technology

However, it is not uncommon for operators to not come to a complete stop when shifting between low and high gear ranges.
Some newer systems allow for shifting from low to high at higher speeds however noise, vibration and harness (NVH) factors and durability are very poor.
The energy required to change the clutch RPM results in the undesirable clunk when making this shift.

Method used

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Examples

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Embodiment Construction

[0044]In the following detailed description, reference is made to the accompanying drawings, which form a part hereof, and in which is shown by way of illustration specific embodiments in which the inventions may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention, and it is to be understood that other embodiments may be utilized and that changes may be made without departing from the spirit and scope of the present invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is defined only by the claims and equivalents thereof.

[0045]Embodiments of the present invention provide a vehicle that allows an operator to shift from a high gear to a low gear or from a low gear to a high gear without having to stop. Embodiments take some of the functions of a manual transmission (i.e. smooth shifting between gears) and combines them with the...

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PUM

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Abstract

A shift on the fly transmission is provided. The shift on the fly transmission includes a continuously variable transmission portion, a discrete transmission portion, at least one input shaft and a disconnect clutch. The continuously variable transmission portion is operationally coupled to receive torque from an engine. The discrete transmission portion includes a gear assembly. The at least one input shaft is operationally coupled to an output of the continuously variable transmission portion. The disconnect clutch operationally couples the at least one input shaft to the discrete transmission portion. The disconnect clutch is further configured to selectively decouple torque from the at least one input shaft to the discrete transmission portion during a range ratio shift of the discrete transmission portion.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority to U.S. Provisional Application Ser. No. 62 / 255,965, same title herewith, filed on Nov. 16, 2015, which is incorporated in its entirety herein by reference.BACKGROUND[0002]Vehicles such as, but not limited to, recreational vehicles including all-terrain vehicles (ATVs) and utility task vehicles (UTVs) implement belt operated continuously variable transmission (CVT) or dual clutch transmissions. Vehicles that implement CVT typically require the vehicle to stop before shifting between low range and high gear range. However, it is not uncommon for operators to not come to a complete stop when shifting between low and high gear ranges. Some newer systems allow for shifting from low to high at higher speeds however noise, vibration and harness (NVH) factors and durability are very poor.[0003]In a typical CVT system, to make a shift from low to high, the throttle is let off and a shift handle is moved from low t...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): F16H37/02F16H3/00
CPCF16H37/021F16H3/001F16H2200/0034
Inventor HAMRIN, JOHN E.HAACK, JEFFREY JOSEPHYOUNGGREN, BRUCE H.LENK, BRANDON P.MAKI, GREGORY L.
Owner TEAM INDS