Which two-stroke and four-stroke machine is better?

Since 1896 , outriggers have emerged, and it has been very easy to configure small vessels from point A to point B with simple efficiency . Over time, the ease of these hanging planes has gradually diminished as technology has advanced. Followed by greater power, faster speed and efficiency, more complicated components and systems for the complex hanging machine. Today's outboard boat is a high-tech product. It is a computer-driven engine. Its fuel efficiency is greatly improved, its speed is faster, its response is better, its power is greater, its reliability is higher, and it is more suitable for the environment.

Demonstration with two-stroke or four-stroke methods is very subjective. All the major manufacturers claim that their hanging planes are superior, and each brand has unique technology that enables it to surpass the competition. If you are in a new engine market, how do you know which one is right for you? With the advancement of technology, more products than ever before. From a small 2.5 hp hanging machine to a 557 hp hanging machine, the choice seems to be endless. Should you use a two-stroke or four-stroke machine? What kind of horsepower can make your inflatable boat have the best performance? Which brand is best for you? Should you use a single engine, a twin engine, or a triple engine? With all the options and possibilities, choosing a machine to hang can be a daunting task. This series of articles will try to help you choose by taking some of these mysterious modern technologies, explaining the techniques behind them and the strengths and weaknesses they provide.

Petrol pitchers are generally divided into two strokes and four strokes. This term refers to the number of strokes the piston needs to complete a single power cycle. Two-stroke and four-stroke engines are based on the same principle of an internal combustion engine, but the design is very different. Each has its advantages and disadvantages. It is said that the two strokes are noisy, perform poorly at or near idle speed, have low fuel efficiency, and have high emissions. However, the response is very fast, fast, powerful, and easy to maintain. The four-stroke is heavier than the two-stroke, the offline reaction is poor, and the maintenance cost is also high. Four-stroke is also considered quieter than two-stroke, fuel and emissions are more effective. All of these statements may be true to some extent, but today these two types of engines in the market are blurring their respective "traditional" advantages and disadvantages.

In the early twentieth century, the first externally-built engine that was commercialized was actually a four-stroke propeller, because the existing hanging-pitcher had already been retrofitted. However, over time, the two-stroke machine we know today has become the mainstream hanging machine in the market and has become the preferred external engine. Its mechanical properties make it very versatile in small, compact packages. Because of this, its popularity is getting higher and higher. Back on the day, four strokes may not output the same volume of two strokes of the same power. Seemingly at the time, two strokes were the perfect solution. Recent technology has arrived to more effectively design more complex and complex four strokes for the marine environment, producing the results demanded by demanding shipowners. Four-stroke engines have a higher tendency due to cleaner emission requirements and higher fuel cost requirements for fuel efficiency. With the progress and progress of these two aspects, the differences and deficiencies of the two are increasingly blurred, making it more and more difficult to choose one.

To understand the characteristics and deficiencies of each brand's hanging machine, we must first understand the basic principles of their work.

The two-stroke gearing machine completes a power cycle (intake, compression, power, and exhaust) with one revolution of the crankshaft and produces two piston strokes. The air intake and exhaust ports are on both sides of the cylinder, which are opened and closed by the movement of the piston. In a full power cycle, several events occur in each stroke ; as a result, the engine tends to respond faster. Since the ports on both sides of the cylinder have no valves, the use of two-stroke engines has fewer mechanical parts and therefore fewer moving parts (without valves, valve springs or cams). This leads to lighter weight than comparable 4-stroke engines. When the piston moves up, the fuel enters the cylinder and burns when it is ignited by the spark plug. The resulting controlled explosion causes expansion and pushes the cylinder back down. When the cylinder is raised again, gas is exhausted through the exhaust port.

This is an inefficient old-fashioned two-stroke operation. At this point in the power cycle, the air inlet (position of the gas into the chamber) is open, and the air outlet (position of the air outlet from the motor) is also open. This allows unburned fuel to remain in the chamber, and also exhausts exhaust gas without being combusted, reducing fuel efficiency and increasing hydrocarbon emissions. This process is called cleanup. The newer two-stroke has already begun to solve this problem, but we will explain in detail later in this series. These engines are lubricated by mixing oil with gas, which also leads to higher emissions and smoke engines at low speeds. The new direct-injection engine solves many of these problems, and the improved technology makes two-stroke a viable option in today's world.

The mechanical properties of a four-stroke engine have certain advantages and disadvantages. The combustion process is very similar to the two-stroke combustion process. However, unlike two-stroke propellers, the new four-stroke engine must perform two complete rotations to complete a power stroke. It is for this reason that their response to throttle and acceleration is not as good as one revolution per two-stroke engine. The combustion process is very similar to two strokes. However, each cylinder of a four-stroke hangs pitcher has valves that are held closed by springs and opened at appropriate times by crankshaft driven camshafts. Because they have this system, the valve remains closed when needed, so unburned fuel cannot be exhausted through the exhaust chamber, and exhaust gas is not left indoors. This usually translates into a cleaner, more fuel-efficient engine. This extra component increases the weight and size of the engine, which may eventually become a disadvantage. However, these motors are extremely reliable, easy to start and enjoy a reputation for quietness and quietness at idle or at low speeds. Their emissions are in line with the increasing environmental and environmental protection policies and are particularly welcomed in certain bodies of water due to their environmental friendliness. All of this comes at a price, but four-stroke propellers are often more expensive than two-stroke propellers.

With the advent of new technologies, the boundaries between the new two-stroke motors and the four-stroke propeller machines have become blurred. In many cases, the arguments of this or the other party can be refuted by the new technology being used. In the following article, we will dig deeper into what new technologies are used by each major propeller machine manufacturer to improve the range of its engines, and will try to inspire new buyers, which will be the most suitable for their application. Best choice. We will communicate with experts in the field and will explain how to produce the advanced technology of the state-of-the-art machine. These technologies will be suitable for you. So, stick with it, technology will ensure you have a relaxed life.

The information in this article comes from the Internet and was reorganized and edited by China Rescue Equipment Network.