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The 118cc engine, also known as the 118 cubic centimeter engine, refers to the size or capacity of the engine. It is a small engine often used in lawn equipment, chainsaws, and other small motorized equipment. There are various types of 118cc engines, and they include:
118 cc 2-stroke engines:
Two-stroke engines complete a power cycle in two strokes of the piston, which allows them to fire once every revolution. This means that they have a high power-to-weight ratio and are suitable for applications where high power is required from a lightweight source. 118 cc 2-stroke engines are widely used in handheld tools such as leaf blowers and chainsaws. These engines also have a simple design with fewer moving parts, which allows for easy maintenance and reliability.
118cc 4-stroke engines:
Four-stroke engines complete a power cycle in four strokes of the piston. These engines are known for their fuel efficiency and lower emissions compared to their counterparts. The 118cc 4-stroke engines are mainly used in applications where fuel efficiency is important, such as in small mowers and in some outboard engines. Additionally, these engines produce torque at lower speeds, making them suitable for tasks that require consistent power delivery.
118cc petrol engines:
The 118cc petrol engines use gasoline as fuel. These engines are commonly found in various small equipment used for outdoor activities, such as lawn mowers and string trimmers. 118cc petrol engines are praised for their quick start and smooth operation. They are also designed to meet emission standards, thanks to advancements in engine technology.
118cc 4-stroke OHV engines:
The 118cc 4-stroke OHV (Overhead Valve) engines are a subset of the 4-stroke engine. In this engine, the valves are located above the cylinder, which reduces the engine's height. This design minimizes the distance that the valves move, which enhances the engine's efficiency and performance. The 118cc 4-stroke OHV engines are used in applications that require reliable performance, such as in garden equipment and some generators.
Various 118cc engine specifications suit different needs and tastes. Here are some of them:
Cylinder arrangement
The 118cc engine has a single-cylinder layout. However, other arrangements, such as V8 and V12, are also available.
Engine configuration
This engine features a transverse layout. It is also configured to have a dual overhead camshaft.
Fuel type
The 118cc engines use standard unleaded gasoline as fuel. However, they can also run on alternative fuels such as compressed natural gas and hydrogen.
Lubrication type
The 118cc engine uses regular engine oil as a lubricant. The oil is circulated through the engine using a pump.
Cooling system
The 118cc engines are water-cooled. They have radiators that help to remove heat from the engine.
Ignition system
This engine features an electronic ignition system. The system ensures that the engine gets a consistent spark to ignite the fuel-air mixture.
Fuel system
The 118cc engine has a fuel injection system. The system ensures that fuel is injected into the engine with pressure.
Engine timing
The timing of the 118cc engine is set using a timing belt. The belt ensures that the engine's valves open and close at the right time.
To keep the 118cc engine running smoothly, regular maintenance is critical. Here are some of the maintenance tips for the 118cc engine.
Choosing an appropriate 118 cc engine requires consideration of several factors:
Engine type:
There are two main types of 118 cc engines: four-stroke and two-stroke engines. Four-stroke engines complete four strokes in a cycle: intake, compression, power, and exhaust. They are more fuel-efficient and quieter than their counterparts. On the other hand, two-stroke engines are more powerful and have a higher RPM. They are mostly used when high power is needed, such as in chainsaws and lawnmowers.
Fuel type:
Most 118 cc engines use gasoline as their fuel source. However, some are designed to run on alternative fuels like propane or ethanol. When choosing an engine, consider the availability of the fuel type in the target market.
Cooling system:
118 cc engine can either be air cooled or liquid cooled. Liquid cooling is more efficient than air cooling. However, liquid cooling requires a more complex engine design, which increases the engine's price.
Engine characteristics:
When choosing an engine, consider its torque and power output. Depending on the application, the engine should have a power output and torque suitable for the task at hand. For instance, if the engine is to be used in a vehicle, the power output should be sufficient to move the vehicle without straining.
Emission regulations:
Depending on the region, there are regulations that govern the amount of emissions that an engine can produce. Before choosing an engine, ensure that it meets the emission standards of the target region.
Engine configuration:
The 118 cc engine can have different configurations, such as inline or V-type engines. Inline engines are more common and less expensive compared to V-type engines. The latter have a higher power output but are more expensive and complex.
Engine applications:
Choose an engine suitable for the intended application. For instance, if the engine is to be used in a generator, it should be designed for continuous operation. On the other hand, if it's used in a vehicle, it should have smooth operation and low vibrations.
Replacement of the 118cc engine can be very technical, and it is important to have mechanical knowledge before attempting to replace it by oneself. Here are some steps to follow:
Gather the necessary tools
Before starting the replacement, make sure to have all the necessary tools needed for the replacement. Some of these tools are wrenches, screwdrivers, pliers, sockets, and ratchets. It is also important to have the new engine replacement ready before starting the process.
Remove the old engine
To remove the old engine, first, disconnect the battery and all the electrical connections. After that, drain all the fluids in the engine, including oil and fuel. Next, use the necessary tools to remove the engine from the vehicle's engine bay.
Install the new engine
To install the new engine, first, place the new engine in the engine bay and connect it to the mounting points. After that, connect all the electrical connections and fill the engine with the necessary fluids, such as oil and coolant.
Q1: How many cylinders does a 118cc engine have?
A1: The number of cylinders in a 118cc engine depends on its design. Most 118cc engines have 1 to 3 cylinders. However, some engines may have more, with each cylinder having a smaller capacity.
Q2: What is the horsepower of a 118cc engine?
A2: The horsepower of a 118cc engine varies based on its design and construction. Generally, a 118cc engine produces between 3 to 5 horsepower. Some engines may produce more or less horsepower.
Q3: What is the torque of a 118cc engine?
A3: The torque of a 118cc engine varies based on its design and construction. Generally, a 118cc engine produces torque in the range of 2 to 4 Nm. Some engines may produce more or less torque.
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