Ignition type engine directly burning methanol cracking product and control method thereof
A methanol cracking and engine technology, applied in engine control, combustion engine, internal combustion piston engine, etc., can solve problems such as large latent heat of vaporization, high aldehyde emissions, incomplete methanol combustion, etc., to eliminate aldehyde emissions, improve thermal efficiency, The effect of improving power
Inactive Publication Date: 2010-09-15
TIANJIN UNIV
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Problems solved by technology
Due to the large latent heat of vaporization of methanol, a large amount of heat is absorbed during the vaporization process, resulting in low temperature of the intake pipe and fuel injector, resulting in poor vaporization of methanol and incomplete combustion of methanol, resulting in high aldehyde emissions
In addition, the consumption of methanol fuel is also higher
Method used
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Embodiment
[0054] The main technical parameters of the original gasoline engine of the engine are shown in Table 1; the performance comparison of the engine directly burning methanol cracking products and the original gasoline engine is shown in Table 2; the emission comparison of the engine directly burning methanol cracking products and the original gasoline engine is shown in Table 3.
[0055] Table 1:
[0056]
[0057] Table 2:
[0058] Rotating speed
(rpm)
torque
(N·m)
power
(kW)
Pure burning methanol consumption
(kg / h)
Pure gasoline consumption
(kg / h)
replacement ratio
2000
111.2
23.3
9.2
5.7
1.614
2500
118.42
31
12.87
7.8
1.65
[0059] table 3:
[0060]
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The present invention relates to one kind of ignition type engine burning methane cracking product directly and its control method. The engine includes one gasoline engine system, one methane cracking set, one methane fuel tank, one cracked gas conveying pipe with one normally closed solenoid valve, and one electrical control unit connected to the methane cracking set. The control process of the engine includes the following steps: 1. starting the engine in gasoline work mode; 2. detecting the exhaust temperature; 3. continuing the gasoline work mode when the exhaust temperature is lower than320 deg.c; and 4. entering to the transition gasoline-methane work mode when the exhaust temperature is not lower than 320 deg.c, and further entering to the methane work mode. The present invention has the advantages of over 20 % raised heat efficiency, capacity of eliminating the aldehyde exhaust caused by burning methane fuel, etc.
Description
technical field [0001] The invention relates to an engine using methanol as fuel, and further relates to an ignition type engine directly burning methanol cracking products and a control method thereof. Background technique [0002] At present, the traditional engine can directly burn methanol fuel after some improvements. The fuel injector is arranged in the intake manifold. The fuel comes from the fuel tank and enters the combustion chamber for combustion under the action of the fuel pump. Due to the large latent heat of vaporization of methanol, a large amount of heat is absorbed during the vaporization process, resulting in low temperature of the intake pipe and fuel injector, resulting in poor vaporization of methanol, incomplete combustion of methanol, and high aldehyde emissions. In addition, the consumption of methanol fuel is also high. Contents of the invention [0003] The object of the present invention is to provide an ignition type engine that directly burns...
Claims
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IPC IPC(8): F02D19/06
CPCY02T10/36Y02T10/30
Inventor 姚春德黄钰徐元利刘小平张志辉
Owner TIANJIN UNIV