Reserve tank

Types of reserve tanks

A reserve tank can also be called a supplemental tank, and it is a part of the fuel system in a car. It is designed to hold extra fuel. It is also called a reserve fuel tank. The reserve fuel tank stores fuel that can be used when the primary fuel tank is empty. The supplemental tank ensures that the engine has enough fuel to run even when the driver forgets to refuel.

The reserve fuel tank can be used in two main ways. First, the fuel stored in the reserve tank can be transferred to the primary tank. Second, the fuel from the reserve tank can be used to power the engine directly.

• Fuel transfer:

  The fuel in the reserve tank is transferred to the primary tank using an electric pump. When the fuel level in the primary tank drops to a certain level, the pump will activate and start transferring fuel to the primary tank. The fuel is transferred to the primary tank through a fuel line. The fuel transfer system may have filters to remove impurities.

• Direct injection:

  The fuel from the reserve tank can be injected directly into the engine's combustion chamber. This helps to improve fuel efficiency and reduce emissions. The fuel from the reserve tank is injected into the engine using a fuel injector. The fuel injectors are controlled by the engine control unit. The engine control unit determines the amount of fuel to be injected based on various parameters, such as engine speed and load.

Besides, the reserve tank can also be called a coolant reservoir. It is a tank that holds extra coolant for the car. The coolant reservoir is made of plastic and has a level indicator. It is connected to the radiator and the reserve tank by hoses. It is filled with a coolant-water mixture. When the engine is running, the coolant reservoir is under pressure.

There are two main types of coolant reserve tanks: the expansion tank and the inverted bladder tank.

• Expansion tank:

  The expansion tank is the most common type. It is used in modern cars. The expansion tank is filled with water and coolant. When the engine is running, the water level in the tank rises and falls based on the temperature. The water level in the tank indicates the level of the coolant in the radiator. The expansion tank also has a pressure release valve. The valve opens when the pressure exceeds a certain level and releases excess pressure.

• Inverted bladder tank:

  The inverted bladder tank is used in older cars. The inverted bladder tank is filled with air. The water level in the tank does not change when the engine is running. The water level in the tank is an indication of the water level in the radiator.

Specification and maintenance of reserve tanks

Reserve tanks have different specifications depending on the manufacturer and the intended use. Here are some common specifications:

• Size and capacity:

  The size and capacity of the reserve tank are determined by the intended application. For example, a small car may have a reserve tank that holds 1-2 gallons of fuel, while larger trucks or buses may have a reserve tank that holds 5-10 gallons or more. Overall, the reserve tank size is smaller than the main tank.

• Location:

  Typically, the reserve tank is located within the main fuel tank. However, it can also be found in other locations, such as the fuel tank, under the car's trunk floor, or in the engine bay.

• Fuel type:

  The type of fuel stored in the reserve tank is specified, such as gasoline, diesel, or alternative fuels like ethanol or biodiesel. The fuel type must be compatible with the engine's requirements and the fuel system components.

• Materials:

  The materials used for the construction of reserve tanks are critical for durability and corrosion resistance. Common materials include steel, aluminum, and plastic composites. Each material has advantages and disadvantages regarding strength, weight, and resistance to chemical reactions with fuel.

• Pressure rating:

  Some reserve tanks are designed to hold fuel at higher pressures than others. The pressure rating is an important specification for the safety and integrity of the fuel system. Higher-pressure tanks must be constructed with thicker walls and stronger materials to withstand the increased stress.

• Emissions control features:

  Some reserve tanks have emissions control features, such as vapor recovery systems, to reduce environmental impact. These systems capture and store fuel vapors, preventing their release into the atmosphere.

It is crucial to keep fuel reserve tanks well-maintained to ensure they work properly when needed. Here are some maintenance tips:

• Check for leaks and damage: Inspect the reserve tank regularly for signs of damage, such as cracks, dents, or leaks. If any issues are found, repair or replace the tank as soon as possible to prevent fuel loss and environmental contamination.
• Inspect fuel lines and connections: Check the fuel lines and connections between the reserve tank and the fuel system for wear, cracks, or leaks. Replace any damaged components and ensure all connections are tight and secure to prevent fuel leaks and vapor emissions.
• Replace the reserve fuel tank: Depending on the manufacturer's recommendation, users should replace the reserve tank after a certain mileage or period. Old tanks may degrade and cause fuel contamination or other issues.
• Clean the reserve tank: Over time, dirt, rust, and debris may build up in the reserve tank, affecting fuel quality. Therefore, cleaning the tank every few years or as needed is recommended. To do this, remove the tank from the fuel system and flush it with a suitable cleaning agent. After that, rinse thoroughly with clean water and allow it to dry completely before reassembling.
• Use high-quality fuel: Using good-quality fuel with the right octane or cetane rating for the engine can help keep the reserve tank and the fuel system in good condition. Avoid using low-quality fuels or additives that may damage the tank or other components.

How to Choose Reserve Tank

When looking to buy reserve fuel tanks for sale, here are some pointers that buyers should consider:

• Brand Reputation

  To get the best quality, buyers should research popular brands and their reputation. Well-known brands have built trust over the years and tend to offer quality products.

• Legal Compliance

  Buyers should ensure that the tank they choose is compliant with local regulations. Different areas have rules on emissions and safety standards that need to be followed.

• Installation

  Buyers should consider how easy or complicated it will be to install the reserve tank. An easily installed tank will save both time and money. Also, they should check if the kit comes with all necessary parts for installation.

• Safety Features

  Buyers should look for reserve tanks that have safety features such as pressure relief valves. These features protect the tank and reduce the risk of accidents or explosions.

• Material Durability

  Buyers should consider what material the tank is made of. A durable tank will last longer and be a better value for money. Tanks constructed from aluminum, steel, or high-density polyethylene have different benefits in terms of durability.

• Size and Capacity

  Buyers should choose a tank that is the right size for their needs. It should also fit well in the available space without crowding other parts. The capacity should be sufficient to hold the needed amount of fuel.

• Warranty

  Buyers should check if the manufacturer offers a warranty. A good warranty shows that the company stands behind its product. It also protects the buyer in case there are any defects.

How to DIY and Replace Reserve Tank

The good news is that the coolant reservoir replacement can be done as a DIY project. It is important to have mechanical knowledge and skills to undertake this project. Before starting, it is important to read the car’s manual to understand how the system works. Different cars have different designs and configurations for the reserve tank.

Here are the steps to follow:

• Gather the necessary tools: Get all the tools that will be needed for the project. This includes screwdrivers, pliers, wrenches, and a new coolant reservoir tank. Also, the car should be parked in a well-lit and ventilated place. The engine should be cooled down and the battery disconnected.
• Drain the coolant: Place a drain pan under the car to collect the coolant as the reservoir is being removed. Then, remove the hose clamps and use a screwdriver or pliers to loosen them. The old coolant tank should be removed and the new one installed.
• Reconnect the hoses: Reinstall the hose clamps and ensure there are no leaks. The tank should be filled with the recommended coolant and level checked.
• Reconnect the battery: After ensuring everything is in place and there are no leaks, the battery should be reconnected. Start the engine and let it run for a few minutes. The coolant level should be re-checked and topped up if necessary.

Q and A

Q1: How does one know there is a problem with the reserve tank?

A1: The first sign of an issue with the reserve tank is running out of fuel before reaching the destination. Other indicators include a check engine light and strange noises from the tank.

Q2: Can someone drive with a faulty reserve tank?

A2: It is not advisable to drive with a faulty reserve tank. It can cause the vehicle to run out of fuel unexpectedly, potentially damaging the engine.

Q3: How do people fix reserve tanks?

A3: Minor issues, such as a clogged siphon jet, can be fixed by cleaning. Other problems require replacing damaged parts, which a mechanic can do. They ensure all components are correctly fitted and functioning.

Q4: Does the reserve tank require maintenance?

A4: The reserve tank does not need much maintenance, but users should use fuel additives to clean it. They should also avoid using the reserve tank too often to prolong its life.