Regan Brown
The High Mobility Multipurpose Wheeled Vehicle (HMMWV), more commonly known as the Humvee, is a light, four-wheel-drive military truck. The Humvee has a fuel capacity of 25 gallons, which is equivalent to approximately 350 miles on the highway. However, some sources suggest that the fuel capacity of the Humvee can be increased to up to 40 gallons through modifications. The Humvee has seen widespread use, particularly during the Gulf War of 1991, and has also inspired civilian Hummer versions.
| Characteristics | Values |
|---|---|
| Fuel Tank Capacity | 25 gallons |
| Fuel Capacity | 27-40 gallons |
| Engine | General Motors, Diesel, 8-cyl, 6.2 L, Naturally Aspirated |
| General Motors, Diesel, 8-cyl, 6.5 L, Naturally Aspirated | |
| General Motors, Diesel, 8-cyl, 6.5 L Turbocharged | |
| Cooling | Water, Radiator Fan: Engine-Driven |
| Transmission Options | GM 3L80 3 Speeds Forward / 1 Reverse Speeds |
| GM 4L80E 4 Speeds Forward / 1 Reverse | |
| Electrical System | 12/24-volt |
| Brakes | Hydraulic, 4-wheeled disc |
| Range | 250-350 miles |
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What You'll Learn
The standard fuel capacity of a Humvee is 25 gallons
The Humvee's fuel capacity is an important consideration for its users, and while the standard capacity is 25 gallons, there are variants with different fuel capacities. The Survivable Combat Tactical Vehicle (SCTV) modification, for example, increases the fuel capacity to 40 gallons. This variant also features a more powerful engine, improved suspension, and better brakes.
The Humvee has a range of around 250-350 miles on a tank of fuel, depending on the variant and driving conditions. Its fuel consumption is around 10 miles per gallon, although this can vary depending on driving style and conditions.
Upgrades to the standard Humvee have been made over the years to improve fuel efficiency, suspension, and engine performance. The US Marine Corps, for instance, has sought to upgrade its fleet of Humvees with more efficient engines and improved suspension, among other modifications. These improvements aim to enhance the vehicle's performance, durability, and fuel economy.
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Fuel consumption is 10 miles per gallon
The fuel consumption of a Humvee is highly dependent on the variant of the vehicle in question. The fuel capacity of a Humvee ranges from 25 gallons to 40 gallons. The standard variant of the Humvee, the M1123, has a fuel capacity of 25 gallons, giving it an effective fuel consumption of 10 miles per gallon, not accounting for idling time. This is in line with the fuel consumption of a 1990s General Motors pickup with an almost identical engine and transmission.
The NXT 360 Humvee, which has been available as an independent vehicle or as an upgrade for the M1100 Humvee series since June 2018, features a diesel-series hybrid engine with an all-electric drivetrain. This vehicle has a 6-mile full-electric range for silent operations, which may save fuel in the battlefield.
The M998 A0 series has a curb weight of approximately 5,200 lbs, a payload of 2,500 lbs, and a 6.2-liter V-8 diesel engine with a three-speed automatic transmission. The M1097A2, the current comparable model, weighs only 700 lbs more but can carry almost twice the payload at 4,400 lbs. It has a 6.5-liter V-8 diesel engine with a four-speed automatic transmission.
The current production Expanded Capacity Vehicle (ECV) model M1113 has a payload of 5,100 lbs, a turbocharged 6.5-liter V-8 diesel engine, and a curb weight of 6,400 lbs. The up-armored variant M1114 is produced by AM General with an armor package installed by O'Gara Hess and Eisenhart. The M1114 meets Army requirements for a scout, military, police, and explosive ordnance disposal vehicle with improved ballistic protection levels, including protection against 7.62mm armor-piercing projectiles, 155mm artillery air bursts, and 12-pound anti-tank mine blasts.
Textron's Survivable Combat Tactical Vehicle (SCTV) is a protective capsule that can increase Humvee survivability while improving mobility. The vehicle features a monocoque V-shaped hull and angled sides to help deflect rocket-propelled grenades (RPGs) with scalable levels of protection. It has greater engine power, with a Cummins 6.7-liter diesel engine and Allison 6-speed transmission, as well as a stronger suspension, improved brakes, higher ground clearance, and new onboard instrumentation. The fuel capacity of the SCTV is increased to 40 gallons, and the battery and fuel cells are moved from under the rear seat to the rear of the vehicle.
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The range is 250-350 miles
The High Mobility Multipurpose Wheeled Vehicle (HMMWV), or Humvee, is a highly adaptable military vehicle with a fuel capacity of 25 gallons. This gives the Humvee a range of around 250-350 miles, depending on the model and terrain.
The Humvee's fuel efficiency is estimated at 10 miles per gallon, excluding idling time. This means that with a full tank of fuel, the Humvee can travel approximately 250 miles before refuelling. This range may be impacted by various factors, including the weight of any armour plating and the terrain being traversed.
Upgraded Humvees, featuring improved suspension, engines, and transmission for better fuel efficiency, may have a longer range. The Survivable Combat Tactical Vehicle (SCTV) modification, for example, increases the fuel capacity to 40 gallons, which would extend the range of the vehicle.
The Humvee's range of 250-350 miles is a critical factor in its operational capacity. With this range, the Humvee can navigate diverse terrain and support a variety of military operations. The vehicle's adaptability and durability make it a versatile asset for military forces worldwide.
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Fuel efficiency upgrades are available
The fuel capacity of a Humvee is 25 gallons, according to Military.com. However, Textron's Survivable Combat Tactical Vehicle (SCTV) has increased fuel capacity, holding 40 gallons of fuel.
Fuel Efficiency Upgrades
Several companies are offering Humvee upgrades, including Oshkosh Corporation and Northrop Grumman. Upgrades to the suspension, engine, and transmission can improve fuel efficiency, while also enhancing performance and durability. For example, the TAK-4 independent suspension system offered by Oshkosh Corporation improves off-road capability, ride quality, maximum speed, and durability.
Upgrades to the powertrain and chassis can also improve fuel efficiency. Northrop Grumman has developed a new chassis and powertrain that maintain the protection levels of up-armored versions while improving mobility and payload capabilities.
Another approach to improving fuel efficiency is reducing weight. The Fuel Efficient Demonstrator (FED) program has resulted in the FED Alpha, which uses lightweight materials such as aluminum and aluminum alloys to minimize excess weight. The FED Alpha also includes a custom engine and transmission, as well as lightweight, high-performance brakes, resulting in 70% better mileage than the M1114 Hummer.
Other fuel efficiency upgrades include the XM1124 hybrid-electric Humvee, which has a full-electric range of 6 miles and may reduce fuel consumption and emissions. Upgrades to the tire inflation system and improvements in vehicle survivability can also contribute to overall fuel efficiency by reducing the weight and improving the performance of the vehicle.
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Fuel cells are located under the rear seat
The High Mobility Multipurpose Wheeled Vehicle (HMMWV), more commonly known as the Humvee, is a highly adaptable light military truck. It has a fuel capacity of 25 gallons, with a range of around 250-350 miles.
The fuel cells of the Humvee are located under the rear seat. This was a design choice made to keep the centre of gravity low, allowing for better handling and manoeuvrability. The location of the fuel cells also provides some protection in the event of an explosion or attack, as the fuel is less likely to be ignited by a blast from the side or rear of the vehicle.
However, this design has come under scrutiny in recent years, particularly following the Iraq War, where Humvees were found to be vulnerable to improvised explosive devices (IEDs). To address this issue, Textron developed the Survivable Combat Tactical Vehicle (SCTV) modification kits, which include moving the fuel cells and battery from under the rear seat to the rear of the vehicle. This change improves vehicle survivability and protects against rocket-propelled grenades (RPGs).
The Humvee's fuel efficiency is estimated at 10 miles per gallon, excluding idling time. Upgrades to the engine and transmission have been implemented to improve fuel efficiency and enhance the cooling system, preventing overheating. These improvements are part of the U.S. Marine Corps' sustainment modification initiative to upgrade their fleet of expanded capacity vehicles (ECVs).
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Frequently asked questions
A standard Humvee has a fuel capacity of 25 gallons.
After being modified with a SCTV kit, a Humvee's fuel capacity is increased to 40 gallons.
A Humvee's range is approximately 350 miles on the highway, giving it an effective fuel consumption of 10 miles per gallon.
The fuel capacity of a Humvee is less than that of a PLS (palletized load system), which has a fuel capacity of 100 gallons, but greater than that of a Black Hawk helicopter, which holds only enough fuel for a few hours of flight time.
