Oil and gas mixed burning question and answer

1. The pure natural gas engine converted model than the engine of blending modification of oil and gas engine is easier to calculate what is bad?

Pure natural gas engine converted patterns more easily than engine oil and gas of blending modification model engine bad reason mainly has two aspects: 1, relative to the oil and gas mixing engine burning, pure natural gas engine device used in the relatively more, complicated structure, need to be modified the internal structure of engine, need to replace the piston and cylinder head, so pure natural gas engine converted model engine failure rate is higher than the blending modification of oil and gas mode, more easily damaged. 2, generally there are two main types of internal combustion engine, we use the petrol engine and diesel engine, and respectively corresponding to two different ways of burning. Light gasoline engine is homogeneous mixture, flame propagation combustion, close to the constant volume combustion heat process, the maximum combustion temperature in cylinder is high; Diesel engine is a combustion pressure, fuel mixing and diffusion combustion, thermodynamic process including constant volume and constant pressure, maximum combustion temperature in cylinder is lower than gasoline engines. Oil-gas mixing burning engine and diesel engine combustion way similar to that of pure natural gas engines use gasoline engine combustion mode, so in cylinder temperature than oil and gas with high temperature burning, pure natural gas engine under the condition of high temperature damage more easily than oil and gas mixed burning engine.

2. The characteristics and advantages of mixed burning engine

2.1, engine modification is convenient and fast.

Compared with a modified single fuel engine, the mixed burning engine modified do not need to change the internal structure of the engine, do not need to change for the piston and cylinder head, all the modification is done in the periphery of the engine, after some training most special car works or repair station can be modified. Compared with the single fuel engine, do not need the spark plug, high pressure cylinder line device, oxygen sensor, parts number. High-tech products is to do change numerous for brief.

2.2, low failure rate

Compared with the single fuel engine, due to the large number of reducing device, simple structure, without the internal structure of modified engine profile control, is not to replace the piston and cylinder head, so a substantial reduction in point of failure, there will be no more difficult start, idle instability and failure, all engine failure rate will be greatly reduced, even failure is trying to solve easily.

2.3, the modified engine noise is decreased obviously.

Compared with the pure diesel engine, the combustion process of blending more smooth, maximum explosion pressure is reduced.

2.4 and good dynamic performance

According to our in yingkou converted 290 horsepower weichai engine, users reflect the dynamic performance is better than that of the original diesel engine.

2.5 and long range

When filled with fuel, the longest can travel 1500 km or so, is twice as common single fuel, basic don't have to worry about can't find the user in the process of moving stations and broke down, even if can't find the LPG stations, also can through go to, can meet the demand of individual long-distance vehicles refitted completely.

2.6.1, due to the blending of engine exhaust temperature and the original diesel engine are basically the same, same combustion mode. So it has no effect on the reliability of the engine basic.

2.6.2, has modified engine, running stability.

2.6.3, we did three months in the laboratory experiment, after dismantling without exception.

3. What models of blending mode to apply?

1, mechanical pump series: sinotruk, weichai WD615 (WP10, WP12); Tin firewood CA6DL (faw).

Blending models: long-distance freight vehicles, achieve reduce diesel economic cost, more equipped with weichai, tin, wood series freight vehicle replacement rate above 70%.

2, high pressure common rail series: sinotruk, weichai WP10 (336, 375); Yuchai series of 4 g.

Blending models: long-distance freight trucks, buses, To achieve reduce diesel economic cost, more equipped with weichai, yuchai series vehicle replacement rate of 70% - 80%

4. The modified vehicles will be what?

Modified dual fuel vehicle, engine power loss in principle within 10%, the average of blending than 3:7 (30% or 30% diesel, natural gas), oil and gas substitution ratio of 1:1. 2 (i.e., 1 liter diesel material 1.2 cubic meters) of less than, according to the original car shape, load, speed, driving habits, such as actual situation specific indicators will be different.

5. What are the main types of provincial natural gas vehicle gas way?

1, don't feet step on, step by step acceleration off the gas, fierce drive are sometimes contradictory, the pursuit of speed, save gas will have to put the pedal to avoid started heavy weight than normal speed on the accelerator, gas consumption will increase from 2 to 3 times. Actually step on the gas and accelerated gradually, to achieve 60 kilometers per hour, two kind of accident) on the time, only less than 10 seconds to 20 seconds to save gas, don't get the more than ten seconds of pleasant sensation.

2, keep distance and frequency on the brakes, save more gas

If you don't keep, you need to trample brake easily on the road, when you trample brake, gear car will decline, the car will have to again from low gear up, still start off or low speed gear, engine must eat high volume.

Next, the driving method is very important, we all know, between two points a straight line distance is the shortest, if you often change lanes, distance is long, that will also consume more gas, and often change lanes to pass, must step on the gas, natural gas consumption will increase.

3, don't speed is too high, too high and cost of gas. High speed run, in addition to security, now most of China's highway speed limit is 120. The higher the speed of gas consumption, consumption is very big. The car is in square resistance and speed of the relationship, is not proportional. The higher the speed, the greater the wind resistance, the greater the driving resistance. If often drive to run long distance, there is an experience, if you are in the 100 s and 120 km, save gas, if really run very fast, will be more oil. It think you need power, the engine has oil supply, but also high speed for fuel consumption. If the vehicle speed as the abscissa, fuel consumption as the ordinate, it is a fishing hook curve. Low speed is also more cost of gas, high speed is also a fee for gas.

4, vehicle running deviation is for one of the main causes of gas, four-wheel imbalance will lead to eat into the more power engine.

5, if all of a sudden gas consumption increased, mostly a joint looseness or leakage caused by untight seal, should be timely to professional maintenance site inspection, to avoid air leakage cause more accidents.