Sylvie Willis
The size of a school bus fuel tank varies depending on the model and specifications of the bus. There is no standard size, and the fuel tank capacity can range from less than 30 gallons to over 200 gallons. Some common fuel tank capacities for school buses include 50 gallons, 60 gallons, and 65 gallons. The location of the fuel tank can also vary, with some older buses having the fuel tank mounted behind the stairs on the passenger side, while newer buses may have the fuel tank mounted behind the rear axle between the frame rails.
| Characteristics | Values |
|---|---|
| Standard fuel tank size | There is no standard size tank. It could be anywhere from less than 30 gallons usable to over 200 gallons usable. |
| Fuel tank capacity in some states | In Washington, the minimum capacity for a full-size bus is 60 gallons. |
| Fuel tank capacity in some bus models | A 1966 Chevy with a Wayne body has a tank capacity of 25 gallons. |
| Fuel tank capacity in some bus brands | International, Thomas, and Bluebird School Buses have a 65-gallon fuel tank. |
| Fuel tank location | Most older buses have the fuel tank mounted just behind the stairs on the passenger side. Newer buses have the fuel tanks mounted behind the rear axle between the frame rails. |
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What You'll Learn
Fuel tank sizes vary
The location of the fuel tank also varies, with older buses typically having the tank mounted behind the stairs on the passenger side, while newer buses may have the tank located behind the rear axle between the frame rails. The size and location of the fuel tank can impact the fuel economy of the bus, along with factors such as engine type, transmissions, rear end gearing, and speed.
Some common fuel tank sizes for school buses include 50-gallon and 60-gallon tanks, with some buses even having tanks as large as 65 gallons. The choice between a 50-gallon and a 60-gallon tank may depend on factors such as fuel economy and the desired range between refills. Additionally, the usable fuel in the tank can be impacted by the design of the fuel pickup tube, as some buses with 60-gallon tanks may not be able to utilize all the fuel due to a shorter tube.
When determining the size of a fuel tank, it is important to consider factors such as the intended use of the bus, the distance to be travelled, and the frequency of refills. By taking into account these factors, bus owners can make informed decisions about the appropriate fuel tank size for their needs. Additionally, it is worth noting that fuel tanks can be customized or replaced to better suit an individual's requirements.
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Gas vs diesel tanks
The fuel tank size of a school bus varies and there is no standard size. It could be anywhere from less than 30 gallons to over 200 gallons, depending on the original order from the factory. Some states mandate a minimum number of gallons. For example, Washington requires a minimum of 60 gallons for full-size buses.
School buses can be powered by diesel, gasoline, electric, or propane. Diesel school buses are the most traditional option and are widely available. However, there are several alternative fuel options available that offer different advantages.
Propane school buses, for example, have lower emissions than diesel buses, emitting fewer greenhouse gases, hydrocarbons, and particulate matter. They emit less nitrogen oxide (NOx), a harmful pollutant that can aggravate asthma and harm the environment. Propane is also non-toxic and will not harm the soil or water if accidentally released. Propane costs less per gallon than diesel, resulting in significant fuel savings over time. Additionally, propane burns cleaner than diesel, leading to reduced maintenance costs, extended engine life, and fewer oil changes. Propane buses also have a faster startup, even in harsh weather conditions, and operate more quietly, reducing noise pollution.
Electric school buses are another alternative fuel option, but they may be more challenging to find compared to the readily available diesel buses or the growing popularity of propane buses.
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Tank placement
The placement of a school bus fuel tank depends on several factors, including the bus model, manufacturer specifications, and local regulations. While there is no standard size or placement for school bus fuel tanks, here are some general guidelines and considerations for tank placement:
The size and shape of the fuel tank also influence its placement. School bus fuel tanks can range from less than 30 gallons to over 200 gallons in capacity. The physical dimensions of the tank, such as length, width, and height, will determine the available space for installation. Some tanks may be rectangular, while others may have a more customized shape to fit the contours of the bus.
Additionally, the fuel tank placement must comply with local regulations and safety standards. Certain states, such as Washington, may have minimum fuel capacity requirements for full-size buses. The placement of the tank should also consider safety features, such as easy accessibility for fuel fill-ups and proper ventilation to prevent fuel vapors from building up inside the bus.
When designing the placement of the fuel tank, manufacturers and bus companies should also consider the overall weight distribution of the vehicle. A heavier fuel tank placed too far back or too high up may impact the bus's center of gravity, affecting its stability and handling. Therefore, the fuel tank is typically placed relatively low to the ground and closer to the front or middle of the bus to maintain a lower center of gravity.
Lastly, the fuel tank placement should be easily accessible for inspections and maintenance. This accessibility ensures that any potential leaks, clogs, or other issues can be identified and addressed promptly. In some cases, the fuel tank may be partially enclosed or covered to protect it from the elements and road debris, but there should still be adequate access for maintenance purposes.
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Refuelling frequency
The refuelling frequency of a school bus depends on several factors, including the size of the fuel tank, the fuel economy of the engine, the driving speed, and the distance travelled. School bus fuel tanks can vary significantly in size, with no standard capacity. They can range from less than 30 gallons to over 200 gallons, depending on the specific requirements of the purchaser and the state regulations. For example, in Washington, the minimum capacity for a full-size bus fuel tank is 60 gallons.
To determine the refuelling frequency, one must consider the fuel economy of the bus. The fuel mileage varies depending on the engine type, transmission, rear end gearing, and driving speed. For instance, a bus owner reported achieving an average of 8.2 miles per gallon during a 500-mile trip with a 50-gallon tank. By calculating the fuel economy, one can estimate the distance the bus can travel on a full tank.
Additionally, it is essential to maintain a safe fuel level to avoid running out of fuel, which can be a challenging situation. Some bus owners suggest filling up the tank every 500 miles or when it reaches a quarter full. Another approach is to determine the miles per gallon and set a buffer to start looking for refuelling options before the tank runs out. For example, if a bus can travel 300 miles on a full tank, one should consider refuelling when they near 250 miles.
The refuelling frequency can also be influenced by the location of the fuel tank. Most older buses have their fuel tanks mounted just behind the stairs on the passenger side, while newer buses may have the tanks mounted behind the rear axle between the frame rails. The tank location may impact the accessibility and convenience of refuelling. It is worth noting that some buses have a tag that indicates the tank size, which can help in planning refuelling stops.
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Fuel efficiency
The fuel tank size of a school bus can vary, with no standard size or tank. It can range from less than 30 gallons to over 200 gallons, depending on the original order from the factory. Some states mandate a minimum number of gallons. For example, Washington requires a 60-gallon minimum for full-size buses.
Innovations in routing and idling technology can also improve fuel efficiency. Bus routing software helps plan efficient routes, avoiding congestion and reducing idle time. Intelligent routing and efficient driving behaviours, such as smooth acceleration and proper gear shifting, play a significant role in fuel efficiency. Additionally, proper maintenance, including axle alignment and tire inflation, can increase fuel economy.
One notable example of improving fuel efficiency is the GreenShield invention by Jonny Cohen. GreenShield is a ski-jump-shaped hat installed on the roof of a bus, reducing drag and improving fuel economy by 10 to 20%. This simple innovation not only saves money but also helps reduce greenhouse gas emissions, inspiring other teenagers to create change.
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Frequently asked questions
There is no standard size for a school bus fuel tank. It depends on the model of the bus and what the original purchaser ordered from the factory. The fuel tank capacity of school buses can vary from less than 30 gallons to over 200 gallons. Some states require a minimum number of gallons. For example, in Washington, full-size buses are required to have a 60-gallon fuel tank.
The fuel tank capacity of a school bus depends on various factors, including the engine type, transmissions, rear end gearing, and speed. Additionally, the location of the fuel tank on the bus can vary, with some older buses having the tank mounted behind the stairs on the passenger side, while newer buses may have the tank mounted behind the rear axle between the frame rails.
Yes, certain school bus models may have standard fuel tank sizes. For example, International, Thomas, and Bluebird school buses typically have a 65-gallon fuel tank. Additionally, some bus models may have fuel tanks ranging from 50 to 60 gallons. However, it is always a good idea to refer to the specific bus model and its specifications to determine the exact fuel tank capacity.
