Among the fuel injection systems that have the most significant improvement in combustion effects, 'high-pressure injection' and 'injection freedom' have become important means in current fuel injection systems.The common rail injection system has entered the second generation, and can achieve an injection pressure of 160-180MPa and five multi-stage injections within the variable range of the injection period above 180°C.In the future, through measures such as improving the strength of each part of the common rail injection system and reducing oil leakage, it is expected to achieve high-pressure injection above 200MPa.In the future, there are methods to improve combustion such as premixed combustion and low NOx combustion. In order to achieve premixed combustion, measures such as multi-stage injection and switching combustion methods that can promote premixing are adopted, which requires a higher degree of injection freedom.In addition, due to high EGR and low NOx combustion, it is necessary to consider further increasing the injection pressure as a black smoke countermeasure when the O2 concentration in the intake air is greatly reduced.On the other hand, the combination of fuel injection system and after-treatment technology is also very important.

one. What are the conditions for parallel operation of generator sets? The whole process of putting generator sets into parallel operation is called paralleling. One generator set is run first to send the voltage to the bus, and after the other generator set is started, it is parallel to the previous generator set. At the moment of closing, the generator set should not have harmful inrush current, and the rotating shaft Not subject to sudden shocks. After closing, the rotor should be quickly pulled into synchronization.

The current diesel generator industry is such that investing in diesel generator fields will result in no return or even loss of money. However, some people still invest, and there is a huge demand for diesel generator equipment.Where opportunities exist in the market, competition exists where opportunities exist. Where competition exists, there is no way to escape the natural law of 'big waves wash away the sand, and the survival of the fittest'.Currently, 1/3 of the wind turbines are basking in the sun because the grid connection problem has not been solved.The entry barrier for the fan manufacturing industry is low, and 80% of the more than 70 complete machine manufacturing companies are simple assembly plants.Blades, generators, gearboxes, etc. are purchased from upstream parts companies, assembled and sold in various specifications, causing difficulties in grid connection.A few months ago, a new fan installed by a fan manufacturing company fell from the air and was damaged.It’s time for the market, which is a mixed bag of good and bad, to be cleaned up.Policies are becoming more and more standardized, the need for the introduction of standards is becoming more and more urgent, and competition is becoming more and more fierce. After the golden years of explosive growth, diesel in the post-'golden era'

Electricity shortages and frequent power outages have greatly affected people's lives and industrial production. They also once caused diesel shortages and even partial out-of-stock in Zhejiang, Jiangsu and other regions, because the company's own diesel generator sets consumed a large amount of diesel. This year's power shortage has come unexpectedly. According to data, except for Heilongjiang, Jilin, Liaoning and Xinjiang, all other regions in the country have experienced power cuts to varying degrees. Similarly, Zhejiang, Jiangsu, Shanghai, Guangdong and other places are still the most popular. In view of last year's experience and lessons, more companies, especially foreign trade processing companies, have to purchase diesel generator sets to cope with power shortages in order to complete foreign orders and deliver goods on time. Some diesel generator manufacturers have issued 'out of stock' signs, and the large demand has brought some diesel engine manufacturers that were originally 'in dire straits' back to life. The price of diesel generator sets has also risen. The price of a 200KW diesel generator has increased from 120,000 to 130,000 yuan to 200,000 yuan.

The Development of China's Ultra-Large Displacement Diesel Engines my country's automotive diesel engine market has gone through several important time points from the quasi-heavy-duty stage to the super-heavy-duty stage of more than 10L.Among them: 2003 was the period of intensive launch of quasi-heavy-duty diesel engines, and the displacement was concentrated at 7L; 2005 was the first stage of heavy-duty diesel engines, and the displacement was concentrated at more than 8L; 2006 was the second stage of heavy-duty diesel engines, and the displacement was between 9 and 10L ; From the second half of 2008 to the present, major manufacturers have begun to focus on the launch or mass production of diesel engines above 10L, and vehicle diesel engines have entered a period of super heavy-duty and large displacement above 10L.The characteristic of this period is that it is based on 11L and aims at the next displacement range-12~13L.The current situation of supporting extra-large displacement diesel engines and complete vehicles. Since 2008, some new 12L and 13L extra-large displacement diesel engines have been launched by various diesel engine factories one after another, thus making my country's extra-large displacement heavy-duty engines above 10L

Since its establishment, Haixing Company has gradually developed into a new modern and outstanding private enterprise in Taizhou City by focusing on the technology research and development of generator sets, the expansion of the production scale of generator sets, and the improvement of generator-set related services. The 'Haixing' brand diesel generator sets produced are widely used in shipping, petrochemical industry, highways, railways, water conservancy hubs, municipal engineering, postal and telecommunications, industrial and mining enterprises, hotels and other fields. Based on years of production and sales experience, Haixing has summarized the advantages and strengths of diesel generator sets and shares with you the advantages of diesel generator sets (1), fuel economy, high thermal efficiency, and when working conditions change, the fuel consumption rate curve changes relatively flat. It is also economical under low load (2), reliable and durable. Because there is no ignition system, the fault is low (3), reliable and durable. Because there is no ignition system, there are fewer malfunctions (4), lower harmful emissions (5), and fire safety.

1. Structure The basic structure of a diesel generator set is composed of a diesel engine and a generator. The diesel engine drives the generator to generate electricity. Let’s talk about the basic structure of a diesel engine first: it consists of cylinders, piston, cylinder head, intake valves, exhaust valves, piston pins, connecting rods, crankshaft, bearings and flywheels. The diesel engine of a diesel generator is generally a single-cylinder or multi-cylinder four-stroke diesel engine. Let’s just talk about the basic working principle of a single-cylinder four-stroke diesel engine: the starting of the diesel engine is to turn the diesel engine crankshaft by manpower or other power to make the piston in the top-sealed cylinder. Make up and down reciprocating motion. The piston completes four strokes in motion: intake stroke, compression stroke, combustion and power (expansion) stroke, and exhaust stroke. When the piston moves from up to down, the intake valve opens, and the fresh air filtered by the air filter enters the cylinder to complete the intake stroke. The piston moves upward, the intake and exhaust valves are closed, the air is compressed, the temperature and pressure increase, and the compression process is completed. live

Diesel generator set refers to a power machine that uses diesel as fuel and a diesel engine as the prime mover to drive a generator to generate electricity. The diesel engine converts the heat energy released by the combustion of diesel into kinetic energy, and the generator converts the kinetic energy into electrical energy! However, some energy is lost during each conversion! The converted energy is always only a part of the total energy released by combustion, and its percentage is called the thermal efficiency of the diesel engine. In order to describe the thermal efficiency practically, diesel generator manufacturers mostly use the G/KW.H parameter, which means how many grams of oil a kilowatt consumes per hour. If you change this unit into liters, you can immediately know how many liters you have consumed. of fuel, so you can clearly understand how much you spend per hour; some manufacturers also directly tell L/H, which means how many liters of fuel are consumed per hour. Method for calculating fuel consumption: 1. Generally, a high-horsepower diesel engine with more than 100 horsepower consumes

Regarding whether the generator set is operating normally, Haixing Generator Set technicians remind you that you need to pay attention to several points at all times: 1. AC ammeter: whether the needle indication is normal, switch the current switch, and measure the phase current value between each phase sequence. , the difference between each phase sequence should not exceed 10%. 2. AC voltmeter: Is the voltage indicated by the meter needle normal? 3. Check whether the oil pressure indicated by the oil pressure gauge is within the normal range. 4. Charging meter: whether the pointer is in the (+) direction. 5. Whether the water temperature indicated by the water temperature meter is within the normal range of 65℃ ~ 93℃. 6. Tachometer: Whether the engine speed is appropriate. (60Hz is 1800 rpm) 7. Is there any abnormal sound or vibration in the generator engine?

Diesel generator set is a type of AC power supply equipment for self-contained power stations. It is a small independent power generation equipment that uses an internal combustion engine as power to drive a synchronous alternator to generate electricity. Modern diesel generator sets are composed of a diesel engine, a three-phase AC brushless synchronous generator, a control box (screen), a radiator tank, a coupling, a fuel tank, a muffler and a common base. The flywheel housing of the diesel engine and the front end cover of the generator are directly connected in the axial direction using shoulder positioning to form an integrated body. A cylindrical elastic coupling is used to directly drive the rotation of the generator from the flywheel. The connection method is fixed together by screws so that the two The two are connected into a steel body to ensure that the concentricity of the crankshaft of the diesel engine and the rotor of the generator is within the specified range. The diesel generator set is composed of an internal combustion engine and a synchronous generator. The maximum power of the internal combustion engine is limited by the mechanical load and thermal load of the components, which is called the rated power. The rated power of the AC synchronous generator