Electric Solar Vehicle Championship-esvc19 Test

The minimum ground clearance allowed for a vehicle of ESVC19 is 6 inches. Ground clearance refers to the distance between the lowest point of the vehicle and the ground. A higher ground clearance is important for off-road vehicles or vehicles that may encounter uneven terrain. 6 inches is a reasonable minimum ground clearance that allows the vehicle to navigate over bumps, potholes, and other obstacles without damaging the undercarriage. It strikes a balance between stability and maneuverability.

Teams are not allowed to place panels on the roof or over the head of the driver for adventure class ESVC.

The correct answer is behind the firewall/Main roll hoop only. This positioning ensures that the battery pack is securely placed and protected from potential damage in case of an accident. Placing it under the driver seat or in front of the front roll hoop could expose it to greater risk. Additionally, positioning it in the side pods may affect the balance and stability of the vehicle. Therefore, behind the firewall/Main roll hoop is the most suitable and safe location for the battery pack.

The correct answer is 180kg because it is the weight limit that the adventure class esvc must be under. This means that the weight of the esvc should not exceed 180kg in order to be considered within the weight limit.

A battery level indicator is necessary to be placed in front of the driver on the dashboard because it allows the driver to monitor the battery's charge level while driving. This information is important as it helps the driver to know if the battery needs to be charged or replaced. Having the indicator in front of the driver ensures that it is easily visible and accessible, allowing for quick and convenient monitoring of the battery level.

Teams are allowed to provide passage/slots for air to get in so that cooling of the battery and motor can take place. This is important because during operation, batteries and motors generate heat that needs to be dissipated to prevent overheating and potential damage. Allowing air to flow through the vehicle helps in cooling these components, ensuring their optimal performance and longevity.

The picture is an example of node to node triangulation. Node to node triangulation refers to the method of connecting nodes or points in a triangular pattern to strengthen and stabilize a structure. In this picture, it appears that the nodes are connected in a triangular pattern, which is a common technique used in engineering and construction to enhance the structural integrity of various objects such as buildings, bridges, and frameworks.

Teams can use a separate battery of max 12V for all the mentioned options, including the horn, battery level indicator, and brake light. This means that each of these components can be powered by a separate battery with a maximum voltage of 12V.

The driver must have a vision range of 200°. This means that the driver should be able to see objects or obstacles within a 200° field of view. Having a larger vision range allows the driver to have a better awareness of their surroundings and potential hazards. A vision range of 200° is wide enough to provide a good level of visibility without being too overwhelming or distracting for the driver.

The correct answer is Aluminium/steel. This is because floor close out panels need to be made of materials that are strong, durable, and resistant to damage. Aluminium and steel are both known for their high strength and durability, making them suitable choices for these panels. Using only steel or only aluminium may not provide the desired level of strength and durability, hence a combination of both materials is preferred. Wooden ply, on the other hand, may not have the necessary strength and durability required for floor close out panels.

The correct answer is 2 because each team must have at least one fire extinguisher, as stated in the question. Since each fire extinguisher weighs 1 kg, the team must have 2 fire extinguishers, each weighing 1 kg.

The correct answer is SAE 95th percentile Male and 5th percentile Female. This means that the teams are required to provide ergonomics that accommodate the body dimensions and anthropometric measurements of the 95th percentile male and the 5th percentile female according to the SAE (Society of Automotive Engineers) standards. These percentiles represent the range of body sizes and proportions that are considered typical for the respective genders. By designing for these percentiles, the teams can ensure that the ergonomics of their products are suitable for a wide range of users.

The range of wheel size in ESVC 2019 is 12inch-14inch.

The main roll hoop needs to be a single piece and continuous in order to provide maximum structural integrity and safety. If the roll hoop is cut into pieces or has gaps, it may compromise its ability to withstand impact and protect the occupants in case of a rollover accident. A single piece and continuous roll hoop ensures that there are no weak points or areas where the structure can fail, providing a strong and reliable safety feature for the vehicle.

The distance from the hip point to the top of the head restraint must be at least 800 mm. This is because the head restraint is designed to provide support and protection for the head and neck during a collision or sudden stop. A minimum distance of 800 mm ensures that the head restraint is positioned at an appropriate height to effectively support the head and reduce the risk of whiplash injuries.

The tip of the main roll hoop must be 4 inches away from the driver's helmet. This is a safety requirement to ensure that there is enough space between the driver's head and the roll hoop in the event of a crash or rollover. By maintaining this distance, it helps to minimize the risk of injury to the driver's head.

Jack Point should be positioned at each end, both in the front and rear of the object being lifted. This is important for maintaining balance and stability while lifting heavy objects. Having a jack point at each end ensures that the weight is evenly distributed and prevents the object from tipping or causing damage.

The hitch point should be painted with yellow color. This is because yellow is a highly visible color, making it easier for people to see and locate the hitch point. Additionally, yellow is often used as a cautionary or warning color, which can help to alert individuals to the presence of the hitch point and promote safety.

The correct answer is "Separate entities" because bumper, hitch point, and jacking point are three different components of a vehicle and serve different purposes. The bumper is designed to absorb impact in a collision, the hitch point is used for towing or attaching accessories, and the jacking point is used for lifting the vehicle during maintenance or repairs. Therefore, they are separate entities and not linked to each other.

The use of a battery management system (BMS) with a battery pack is compulsory. A BMS is responsible for monitoring and controlling various aspects of the battery, such as temperature, voltage, and current. It ensures the safe and efficient operation of the battery pack by preventing overcharging, over-discharging, and overheating. Without a BMS, the battery pack could be at risk of damage or failure, leading to potential safety hazards. Therefore, it is necessary to have a BMS in place when using a battery pack.

All competition vehicles must have at least two braking hydraulic circuits. This is necessary for safety reasons, as having two separate circuits ensures that there is a backup in case one circuit fails. It provides redundancy and allows for better control and performance of the brakes. Having two circuits also helps to distribute the braking force evenly between the front and rear brakes, improving overall braking efficiency and stability.

The correct answer is 1500 Watt (minimum) to 2250 Watt (maximum). This range of power is required for an Adventure class ESVC. The minimum power of 1500 Watt ensures that the vehicle has enough power to operate efficiently, while the maximum power of 2250 Watt ensures that it does not exceed the power limit for this class. This range provides a suitable balance between power and energy efficiency for the ESVC.

The correct answer is 2000 N. The brake pedal needs to be able to withstand a force of 2000 N without any failure of the brake system or pedal box. This force is necessary to ensure that the brake pedal can effectively stop the vehicle and maintain the safety of the braking system.

The bumper should be able to bear front impact load, as well as vertical load up to 100 kg. This means that the bumper should be strong enough to withstand a force of 100 kg without breaking or getting damaged. It should be able to absorb and distribute the impact energy effectively to protect the vehicle and its occupants in the event of a collision.

The maximum voltage of an accumulator allowed for the Professional class is 72 V. This means that the voltage of the accumulator should not exceed 72 V. Additionally, the maximum energy capacity of the accumulator allowed is 38 MJ. This means that the accumulator should not have an energy capacity greater than 38 MJ.

The primary chassis members must have a circular cross section because circular shapes provide the highest strength and rigidity compared to other shapes. The circular shape evenly distributes stress and allows for efficient load-bearing capabilities. Additionally, circular cross sections are more resistant to bending and torsion forces, making them ideal for providing stability and structural integrity to the chassis.

The maximum voltage of the accumulator allowed for the Adventure class is 60 V. The given answer, 20 MJ and 60 V, is incorrect because it exceeds the allowed voltage limit. The answer combines a high energy value (20 MJ) with the correct voltage (60 V), but the energy value is not relevant to the maximum voltage allowed.

The correct answer is "Front and rear." This means that there should be an impact bumper on both the front and rear of the vehicle. Impact bumpers are designed to absorb the energy of a collision and help protect the vehicle's structure and occupants. Having impact bumpers on both the front and rear of the vehicle ensures that it is well-protected from potential impacts in any direction.

Teams should make sure that fluctuating Direct Current should not reach Battery Pack directly. Direct current is the flow of electric charge in one direction only. Fluctuating direct current can cause instability and damage to the battery pack. Therefore, teams should take precautions to prevent this fluctuating current from directly reaching the battery pack to ensure its proper functioning and longevity.

When a vehicle is braking, it should not experience excessive rotation around its vertical axis, which is known as yaw. Yawing can lead to instability and loss of control. Therefore, it is important for the vehicle to maintain stability and not yaw more than 30 degrees under braking.

In cockpit design, the angle between each occupant's shoulders, hips, and knees must be more than 90°. This is because a greater angle helps to ensure better ergonomics and comfort for the driver. A larger angle reduces strain on the body and allows for a more relaxed and natural sitting position, which is important for long periods of driving. Therefore, angles greater than 90° are preferred in order to optimize driver ergonomics.

When multiple panels are used for floor close-out, it is important to ensure that there are no excessive gaps between them. The correct answer is 3 mm, as this measurement ensures that the gaps between panels are kept to a minimum. This is important because larger gaps can lead to unevenness in the floor surface, compromising its strength and stability. Therefore, it is crucial to adhere to this maximum gap size to maintain the integrity and quality of the floor installation.

The steering wheel must have a continuous perimeter to ensure a smooth and uninterrupted grip around the entire circumference of the wheel. This allows for better control and maneuverability of the vehicle. A continuous perimeter also prevents any gaps or breaks in the wheel, which could lead to discomfort or difficulty in handling the steering.

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Solar panels that are overhanging need to be securely bolted to the bodywork in order to ensure their stability and prevent any potential damage or accidents. Without proper secure bolting, the panels may become loose or detached, posing a risk to both the vehicle and anyone in its vicinity. Therefore, it is essential to securely fasten overhanging solar panels to the bodywork to ensure their safe and effective operation.

The term "travel" refers to the distance that the suspension can move up and down. A minimum of 4 inches of travel is necessary to ensure that the suspension can effectively absorb bumps and shocks on the road, providing a smoother and more comfortable ride. With less than 4 inches of travel, the suspension may not be able to adequately absorb impacts, resulting in a harsher and less controlled ride. Therefore, having a minimum of 4 inches of travel is essential for optimal suspension performance.

The statement is false because the front roll hoop is not mandatory for the Professional class ESVC.

All vehicles must be equipped with SFI Specification 16.1, 5-point harness because it provides the highest level of safety and restraint for the occupants. A 5-point harness includes two shoulder straps, two lap belts, and a crotch strap, which distribute the force of impact more evenly across the body. This helps to prevent the occupant from being thrown forward or out of the vehicle in the event of a collision. SFI Specification 16.1 ensures that the harness meets the necessary safety standards and has been tested for durability and effectiveness.

The correct answer is "Horizontally between front roll hoop and steering wheel." This means that the distance between the front roll hoop and the steering wheel should be measured in a horizontal line. The measurement should not exceed 250 mm (9.8 inches) in front of the steering wheel.

A brake pedal over-travel switch must be installed on the car as part of the shutdown system and wired in series with the shutdown buttons. This means that the switch and the buttons are connected one after the other in a single path. In a series circuit, the current flows through each component in the same direction, and if any component fails or is open, the circuit will be broken and the shutdown system will be activated. Wiring the switch in series ensures that the shutdown buttons will only work if the brake pedal is pressed beyond its normal range, providing an additional safety measure.

A brake over-travel switch is a safety device used in braking systems to detect excessive brake pedal travel. It is designed to activate when the brake pedal is pressed beyond its normal range. The switch needs to have a single point, single throw configuration, meaning it has only one contact point and can only be in one position (on or off) at a time. This configuration ensures that the switch accurately detects over-travel and effectively triggers the necessary actions to prevent any potential brake system failures.

The statement "Welding of the firewall on the frame is acceptable" is true. Welding the firewall onto the frame is an acceptable method of joining the two components together. The firewall is an important part of a vehicle's structure, as it separates the engine compartment from the passenger compartment and provides protection in case of a fire. Welding ensures a strong and secure connection between the firewall and the frame, ensuring the safety and integrity of the vehicle.

The statement is true for the Brake over travel switch. This switch is designed to prevent power from being restored to the components even if it is repeatedly actuated. Additionally, it is designed in such a way that the driver cannot reset it. This ensures the safety and reliability of the braking system by preventing any accidental or unauthorized restoration of power to the components.

The statement is false because the rack and pinion type of steering system is not mandatory with a specific same steering ratio. The steering ratio can vary depending on the specific design and requirements of the vehicle. Other types of steering systems, such as recirculating ball or worm and sector, can also be used in vehicles.

The Main Hoop braces need to be attached close to the top of the Main Hoop, but not more than 160 mm below the top-most surface. This ensures that the braces provide maximum support and stability to the Main Hoop structure. Attaching the braces too far below the top surface may compromise the effectiveness of the braces in reinforcing the Main Hoop.

In the side view, the front roll hoop can be inclined more than 10 degrees.

The correct answer is Total vehicle length= 5000 mm. This is because the question states that a professional class ESVC must have a total vehicle length of 5000 mm.

The body works should cover the wheels in order to provide protection and enhance the overall appearance of the vehicle. By covering the wheels, it prevents dirt, debris, and other elements from damaging the wheels and also helps in maintaining the aerodynamics of the vehicle. Additionally, covering the wheels gives a streamlined and finished look to the vehicle, making it more visually appealing.

The front roll hoop should be made up of multiple pieces with gusseting. This means that it should be constructed using several separate components that are reinforced with additional triangular braces or plates called gussets. This design ensures greater strength and rigidity, as the gussets help distribute the forces and stresses more evenly throughout the structure. Using multiple pieces with gusseting also allows for easier assembly and maintenance, as individual sections can be replaced or repaired if necessary without having to replace the entire front roll hoop.

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