An active track-chain sag management system for usage in conjunction with crawler vehicles having tracked undercarriages includes a movable track-engaging member positioned for physical engagement into a track-chain of the tracked undercarriage, an electric drive assembly controllable to adjust a track-tensioning position of the movable track-engaging member relative to the track-chain, and a controller operatively coupled to the electric drive assembly. The controller is configured to command the electric drive assembly to repeatedly adjust the track-chain sag of the track-chain by varying the track-tensioning position of the movable track-engaging member during operation of the tracked undercarriage.

A track system for a vehicle on a ground, wherein the track system comprises a track and is designed to enhance how its track is tensioned, such as by including a plurality of tensioners that exert opposite forces on the track at its front and rear regions and/or lack hydraulic or pneumatic elements, allowing to reduce its dimensions (e.g., sizes of its components, packaging or envelope) and its weight, while protecting against ratcheting of the track, reducing its energy consumption, costs and/or maintenance requirements, increasing durability of the track, and/or improving other aspects of the track system and/or the vehicle.

A track running gear for a track chassis of a civilian tracked vehicle, having a rubber continuous track guided circumferentially over an end drive wheel, an opposite tension wheel and over a plurality of running wheels. Each of the running wheels touches a lower strand of the rubber continuous track. At least two of the running wheels touch an upper strand, which upper strand is located opposite the lower strand, of the rubber continuous track.

A track running gear for a track chassis of a civilian tracked vehicle, having a rubber continuous track guided circumferentially over an end drive wheel, an opposite tension wheel and over a plurality of running wheels. Each of the running wheels touches a lower strand of the rubber continuous track. At least two of the running wheels touch an upper strand, which upper strand is located opposite the lower strand, of the rubber continuous track.

A track system for traction of an off-road vehicle such as a snowmobile or an all-terrain vehicle (ATV). The track system comprises a track-engaging assembly and a track disposed around the track-engaging assembly. The track system may be configured to have a reduced noise profile so as to generate less noise, enhanced track rigidity characteristics to improve its traction and floatation, and/or other features improving use and performance of the off-road vehicle.

A method for managing a drive mode of a tracked vehicle, comprising the step of reading an output of a sensor and in response to the output of the sensor performing a control action to manage the drive mode of the vehicle.

A method for managing a drive mode of a tracked vehicle, comprising the step of reading an output of a sensor and in response to the output of the sensor performing a control action to manage the drive mode of the vehicle.

A track assembly is to be mounted on a drive axle of a vehicle. The track assembly has a frame, at least one leading idler wheel mounted to the front of the frame for rotation about a transverse leading idler wheel axis, at least one trailing idler wheel mounted to the rear of the frame for rotation about a traverse trailing idler wheel axis parallel to the leading idler wheel axis, a single drive wheel assembly, and at least two slide rails. The slide rails have corresponding forward-facing portions, central portions, and rearward-facing portions. The forward-facing portions project from the front ends of the central portions by a projection that is greater than a length of the central portions. A vehicle having the track assembly is also described.

A track assembly is to be mounted on a drive axle of a vehicle. The track assembly has a frame, at least one leading idler wheel mounted to the front of the frame for rotation about a transverse leading idler wheel axis, at least one trailing idler wheel mounted to the rear of the frame for rotation about a traverse trailing idler wheel axis parallel to the leading idler wheel axis, a single drive wheel assembly, and at least two slide rails. The slide rails have corresponding forward-facing portions, central portions, and rearward-facing portions. The forward-facing portions project from the front ends of the central portions by a projection that is greater than a length of the central portions. A vehicle having the track assembly is also described.

An undercarriage system for a track-type machine includes an idler height adjustment system having piston assemblies supported in a frame, in opposition to one another, to contact upper and lower sides of an idler support element or block. A conduit connects the piston assemblies and has therein a fluid exchange valve adjustable to an open position where a flowable material such as grease is exchanged through the conduit between the piston assemblies, and a closed position where fluid connection between the piston assemblies is blocked and idler height is fixed.