A fuel closed-loop control method for a gas-fired power generation engine
A closed-loop control, gas-fired power generation technology, applied in engine control, combustion engine, fuel injection control, etc., can solve problems such as high maintenance costs, engine knocking, and large gas source differences, and achieve reduced maintenance costs and efficient fuel control. , Strengthen the effect of monitoring the combustion state
Active Publication Date: 2022-02-22
WEICHAI XIGANG NEW ENERGY POWER
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Problems solved by technology
[0002] The running speed of the gas-fired power generation engine is constant, and it is mainly used in areas with sufficient gas sources. In the application of low-quality gas such as biomass gas, the failure rate is very high, resulting in high maintenance costs. If the failure is not found in time, it may cause serious consequences such as engine knocking and cylinder scuffing.
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[0053] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0054] Such as figure 1 and figure 2 As shown, a gas-fired engine fuel closed-loop control method, comprising the following steps:
[0055] Step 1. Obtain the engine operating load pA_M and the exhaust temperature T1 of each cylinder;
[0056] Step 2. Search the exhaust temperature map table (T1_map) calibrated by the bench according to the operating load pA_M and the exhaust temperature T1 of each cylinder, and obtain the basic gas concentration ph_B;
[0057] Step 3. Find the gas concentration correction factor according to the engine operating conditions;
[0058] Step 4: Multiply the basic...
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The invention discloses a fuel closed-loop control method of a gas-fired power generation engine, which relates to the field of engines. The engine operating load and the exhaust temperature of each cylinder are obtained, and the exhaust temperature map table calibrated by the bench is searched according to the operating load and the exhaust temperature of each cylinder. , to obtain the basic gas concentration; then find the gas concentration correction factor according to the engine operating conditions, and then multiply the basic gas concentration and the gas concentration correction factor to calculate the gas concentration; let the real-time gas concentration take the preset gas concentration as the target, through Control the amount of gas entering the mixer to achieve closed-loop control of the amount of gas. It can be seen that the gas-fired engine fuel closed-loop control method of the present invention takes the engine reliable control index exhaust temperature as the collection object, effectively enhances the control accuracy of engine reliability, and realizes high-efficiency fuel efficiency of the engine without increasing the hardware structure. Control, strengthen the monitoring of engine combustion state, improve engine reliability and reduce maintenance cost.
Description
technical field [0001] The invention relates to the technical field of engines, in particular to a fuel closed-loop control method of a gas-fired power generation engine. Background technique [0002] The running speed of the gas-fired power generation engine is constant, and it is mainly used in areas with sufficient gas sources. In the application of low-quality gas such as biomass gas, the failure rate is very high, resulting in high maintenance costs. If the failure is not detected in time, it will easily cause engine knocking, cylinder scuffing and other serious consequences. Contents of the invention [0003] In view of the above deficiencies, the technical problem to be solved by the present invention is to provide a fuel closed-loop control method for a gas-fired power generation engine, which realizes high-efficiency fuel control of the engine, strengthens the monitoring of the combustion state of the engine, improves engine reliability and reduces maintenance cos...
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IPC IPC(8): F02D41/00F02D41/14F02D41/22
CPCF02D41/0027F02D41/1401F02D41/1446F02D41/1448F02D41/22F02D2200/0414Y02T10/40
Inventor 王增飞李春玺
Owner WEICHAI XIGANG NEW ENERGY POWER