Biogas - Modification and Use of Diesel Dual Fuel Single-cylinder Diesel Engine
Every cubic meter of biogas is equivalent to the low calorific value of 0.91 kg of agricultural diesel. Biogas is used as a fuel for internal combustion engines and is characterized by smoke-free, ash-free, low pollution, and good anti-knocking properties. Therefore, the same working volume of the internal combustion engine, the power obtained when using biogas will not be lower than when using diesel power. First, the conversion method The small horsepower single-cylinder diesel engine was converted to a biogas-diesel dual-fuel engine. In the case of dual-fuel work, biogas is actually the main component and only a small amount of diesel is used to ignite the compressed biogas and air mixture. When the diesel engine was changed to a biogas-diesel dual-fuel engine, the original engine compression ratio (18:22) and advanced injection angle remained unchanged. The air intake system was mainly modified, and a biogas and air were added after the original air filter. Mixer device. The mixer consists of a manual valve that controls the supply of biogas and a tee. Second, the use of methods and precautions (1) Biogas-diesel dual-fuel engine operation method. 1 start. Close the biogas valve. Start the diesel engine according to the start method of the diesel engine. The operation method is the same as before the unmodified. 2 operation. After the start, bring the load, place the throttle of the diesel engine at a suitable position (usually at a lower position in the middle). After the engine is running normally, slowly open the biogas valve and input the biogas. After the biogas is input, the fuel supply under the governor is automatically reduced, and the engine speed is stable. If you enter too much biogas, the engine will interrupt the instantaneous oil supply and generate intermittent operating noise. In this case, the biogas valve should be turned down slightly until normal operation. In the process of running, the method of adjusting the speed is the same as before the conversion, by changing the throttle grip position. With the change of the speed or load of the dual-fuel engine, the biogas valve should be opened or closed accordingly to ensure the normal operation of the dual-fuel engine and better fuel economy. When the dual-fuel engine cooling water temperature and low-load operation, the fuel-saving effect is poor. 3 parking. Close the biogas valve first, then close the throttle. (2) Biogas-diesel dual-fuel engine operation precautions. 1 Regularly inspect the biogas valves, gas pipelines, and joints for leaks, so as to avoid fire or even explosion. 2 Operate the biogas valve to be steady, and do not ignore the big or small, so as not to cause the engine to work abnormally due to the sudden increase in the amount of biogas. 3 During the operation of the dual-fuel engine, attention should be paid to changes in the load and the pressure of the biogas. The operator can adjust the biogas valve at any time based on experience and feeling, and stabilize the rotation speed to achieve the desired fuel-saving effect. A good operator can save 80-90% of fuel, and the poor fuel economy is only 50-60%. (4) When the complete combustion of diesel is required due to insufficient gas supply from the biogas or other reasons, the engine does not have to be stopped. It is only necessary to close the biogas valve and use it according to the general diesel engine operation method. (Jiangxi Chen Honglong) Foot of ningxia hong xingda incense Organic Apple fruit suborbicular, fruit surface color yellow green, most with orange chardonnay fruit surface, covered with bright red stripes, pulp yellow-white, succulent crisp, sweet, rich fragrance, quality first-class; The fruit has a sugar content of over 15%, more than 4% of the national average, and the flesh is tight and crisp and sweet, which is widely loved by consumers all over the world. There is a longer optimal consumption date than any other apple, not even refrigerated. It can be kept for 4 months at normal temperature. If refrigerated, Fuji can be kept for 5--7 months. Red Fuji Apple,Red Fuji Selenium Apple,Thin Skin Apple,Fresh Red Fuji Fruit Ningxia hongxingda fruit industry , http://www.hxdfruit.com
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Humidity environment: moderate amount of rainfall provides necessary conditions for apple's growth. The annual rainfall in the central health region is 186 millimeters. The fruit is slow to grow and the fruit is hard and hard, which fully guarantees the fruit's sugar content and the relatively average size of apples.
Sunshine condition: apple is the fruit tree, the central health area of the whole year is nearly 3,800 hours, is beneficial to the Apple Fruit coloring. The piedmont apples are red and bright.
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