What is the difference between each type of the marine engines?

When we purchase a marine engine, we can find that there are many types of the diesel engine. Each type has different characteristics. So we have to know what is the difference between each type of the marine engine.

Here is the content list:

What are the characteristics of marine engines?

What are the types of marine engines?

What is the difference between each type of marine engines?

What is the application of marine engines?

What are the characteristics of marine engines?

1. Fishing boats need to navigate and operate in rough environment, so the basic characteristics of marine engines are reliable operation, good economy and convenient maintenance and management

2. Marine diesel engine starts quickly and reliably.

3. The main diesel engine has a good low speed performance because of the changeable situation of fishing boats at sea.

4. The marine engine has reliable governor and overspeed protection device.

What are the types of marine engines?

Marine diesel engines are generally divided into low speed, medium speed and high speed diesel engines. It can be divided into main engine and auxiliary engine according to its operation in ship. The main engine is used as the propulsion power of the ship, and the auxiliary engine is used to drive the generator, air compressor or water pump.

What is the difference between each type of the marine engines?

1. Low speed marine engines are mostly two-stroke engines, medium speed diesel engines are mostly four stroke engines, while high-speed diesel engines have both. The scavenging modes of two-stroke marine engine include backflow scavenging, port valve scavenging and opposed piston scavenging. Heavy oil is widely used as fuel in high-power medium and low-speed diesel engines, while light diesel is still widely used in high-speed diesel engines.

2. Low speed diesel engine drives the propeller directly. In order to make the propeller have high propulsion efficiency, low speed is required. In general, the marine engine can be driven by the propeller and the gearbox, but it can also be reversed by the propeller and the gearbox. Medium and high speed diesel engines are also driven by generators, motors and propellers.

What is the application of marine engines?

The diesel engine has good thermal efficiency, economy and adaptability to all kinds of ships. It soon replaced steam engine and has been the power plant of conventional submarines, civil ships, small and medium-sized ships.

The main development trend of marine diesel engines is as follows:

1. Improve the supercharging Technology (two-stage supercharging, ultra-high supercharging and afterburning supercharging) to increase the power of single unit;

2. Improve the combustion process, use low quality fuel and waste heat to improve economy, reliability and service life;

3. Fault prediction and monitoring are adopted to realize automatic remote control of the diesel engine.

When purchasing the marine engine, we have other information needed to know. Our company has a great variety of diesel engines and we are happy to serve you. Please contact us.