Browse Topic: Recreational vehicles and equipment
This SAE Standard establishes the test procedures, performance requirements, and criteria necessary to evaluate minimum safety and reliability requirements of a children’s snowmobile as identified in 1.2
This SAE Recommended Practice establishes the method to determine Sound Level of a snowmobile under typical trail operating conditions. Snowmobiles have different engine power levels that depends on the model
This SAE Standard provides minimum requirements and performance criteria for devices to prevent runaway snowmobiles due to malfunction of the speed control system
ABSTRACT This paper contains descriptions and demonstrations of automated test drivers (ATDs) for several different style off-road vehicles. These robotic ATDs can be used without a human operator, to drive vehicles in scenarios that are unsafe for human drivers. Full-scale vehicle tests including rollovers, pitchovers, and crashes involving Recreational Off-Highway Vehicles (ROVs), All-Terrain Vehicles (ATVs), and Zero-Turn Riding Mowers (ZTMs) are included in the paper. The mechanical actuators used to control steering, throttle, and braking differ for the different ATDs. However, they use similar control strategies, network architecture, and electronics. Using these similar items as a starting point would be beneficial for developing ATDs for different styles of military vehicles. Citation: G. Heydinger, S. Zagorski, D. Andreatta, M. Bartholomew, “Development and Use of Driving Robots for Conducting Unmanned Tests of Off-Road Vehicles,” In Proceedings of the Ground Vehicle Systems
This SAE Standard is applicable to snowmobiles as defined in SAE J33
This SAE Standard provides a test method, an evaluation method, and a performance criterion for shock-absorbing characteristics of a general foam-type snowmobile seat. This SAE Standard applies to seats that are similar in design, dimensions, construction, and/or intended usage as described and illustrated in SAE J33
This SAE Standard provides test methods, performance requirements, installation requirements, and guidelines for snowmobile headlamps
This SAE Standard provides the minimum requirements for automotive or RV, seven position, self-draining trailer tow connector interface. The procedures included within this specification are intended to cover the test methods, design, and performance requirements of the electrical interface of the seven-position trailer tow connector in low voltage (0 to 20) road vehicle applications
This SAE Recommended Practice establishes a uniform test procedure for determining the maximum velocity of a personal watercraft
This SAE Standard establishes the test equipment, procedure, and acceptance criteria necessary to determine the location of power driven components that could—upon inadvertent contact by an operator, passenger, or bystander—inflict injury
An all-terrain vehicle (ATV) is capable of traveling on any kind of surface or terrain. It is built especially for extreme road conditions. High ground clearance and soft suspension springs are some of the characteristics of an ATV. The use of a four-wheel-drive (4WD) transmission in a light ATV is in high demand. Power on all four tires provides better traction and increases the off-roading capabilities of the ATV. The methodology described in the paper discusses the design and validation of a four-wheel driveline for a light ATV using various modeling and simulation software. Briggs and Stratton engine is coupled with a continuously variable transmission (CVT) to provide infinite ratios within its tuned range to deliver effortless shifting. A two-stage reduction gearbox is used to multiply the torque received from the CVT to provide sufficient traction to the tires. Power is transferred to the front differential via a propeller shaft. A shifting mechanism is installed for shifting
Choice of suspension geometry is an integral part of an ATV design. It has a direct role in ride comfort and vehicle-dynamic characteristics, the most prominent one being the unsprung mass. In the rear vehicle suspension, teams often face the decision to select either a Trailing-Arm suspension design or an H-Arm design. Teams must take into account their existing parameters to rightly decide which geometry is suitable for their application. In this paper, a concept selection strategy is proposed. This strategy combines the conventional way of analyzing mechanical systems and machines with product design aspects. We analyze several characteristics of the geometry and assign a criteria weight to each of these. These criteria include the cost to manufacture, unsprung mass, load handling capacity, acceleration gain ratio during bumps, ease of manufacturing, and ergonomics of the design. Further, we arrive at the suitable geometry for our team using concept selection methods such as
Recreational vehicles have a lot of potential consumers in China, especially the type C recreational vehicle is popular among consumers due to its advantages, prompting an increase in the production and sales volumes. The type C vehicle usually has a higher air drag than the common commercial vehicles due to its unique appearance. It can be reduced by optimizing the structural parameters, thus the energy consumed by the vehicle can be decreased. The external flow field of a recreational vehicle is analyzed by establishing its computational fluid dynamic (CFD) model. The characteristic of the RV’s external flow field is identified based on the simulation result. The approximation models of the vehicle roof parameters and air drag and vehicle volume are established by the response surface method (RSM). The vehicle roof parameters are optimized by multi-objective particle swarm optimization (MO-PSO). According to the comparison, the air drag is reduced by 2.89% and the vehicle volume is
In this paper the multi-link suspension for an All-Terrain Vehicle is designed, modelled and simulated. The model was produced by defining the position of the hard point or coordinate before specifying the component characters and joint variety, then after for modelling of the multi-link suspension, CATIA 3D modelling approach is used, sequentially the MBD approach is adopted for full suspension model simulation. The same test was conducted for the base model (double wishbone suspension) which was holding same characteristics. The kinematics and compliance of the simulation are matched with the base model simulation data to verify the suspension design and the result from the simulation exposed a validated virtual suspension system model with a pretty minimal rate of error. The result of the simulation shows that the introduced suspension system increases the cornering stiffness and deceases the bump steer along with this it gives the quick cornering and straight-line stability
The Continuously Variable Transmission (CVT) is a widely adopted transmission system. The operation of a CVT is simple, but successfully foretelling the longitudinal motion of a vehicle that utilizes this transmission is sophisticated. As a result, different vehicles taking part in BAJA-SAE competitions were developed using various strategies to model the vehicle’s longitudinal dynamics and CVT operation. This article aims to provide a tool for obtaining a quantitative estimate of the longitudinal performance of a CVT equipped vehicle and for the selection of an optimal drive-train gear ratio for such a vehicle. To this end, this article proposes a novel, relatively simple, and reasonably accurate mathematical approach for modeling the longitudinal motion of a vehicle utilizing a CVT, which was developed by a novel integration of existing vehicle dynamics concepts. The proposed technique splits the longitudinal motion into three distinct phases - low ratio acceleration, shifting, and
This SAE Standard establishes a uniform procedure and performance requirements for snowmobile fuel tanks
This SAE Standard provides test procedures, performance requirements, design guidelines, and installation guidelines for snowmobile tail (rear position) lamp
This SAE Standard establishes the test procedure, environment, and instrumentation for determining the sound levels of snowmobiles in the stationary test mode. This test method is intended to provide an accurate measurement of exhaust and other engine noise and may be used to evaluate new and in-use snowmobiles to determine compliance with noise control regulations. Sound level measurements obtained with this test method are not intended as an engineering determination of overall machine noise. For this purpose, the use of SAE J192 is recommended
This SAE Standard establishes a uniform testing procedure and performance requirements for the level surface testing of hand-operated service brake systems on snowmobiles
This SAE Standard establishes a uniform test procedure for determining the exterior operational sound level for snowmobiles
This SAE Standard establishes the instrumentation, test site, and test procedure for determining the maximum exterior sound level for snowmobiles
Design and simulation analysis of braking system for ATV is carried out with the assistance of Ansys and MATLAB. Heat generated increases the temperature of the disc brake at the rubbing surface resulting in thermal stresses in the components of the braking system. Static, structural, thermal, computational flow dynamics, vibrational & fatigue behavior of ventilated brake disc rotor, hub and upright are analyzed. Stainless Steel, SS-410 material configuration has been considered for disc brake rotor and results obtained are analyzed in terms of performance, longevity and efficiency. Braking efficiency and stopping distance curve are analyzed from their characteristics plot. Vibrational behavior, structural behavior, thermal behavior, performance efficiency, flow behavior of ventilated disc brake rotor can be easily depicted with respect to bump and droop during acceleration, high climb and maneuverability. Ventilated disc brake Rotor with outer diameter of 220 mm is used. Comparison of
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