Cold start device and cold start method of M100 methanol engine
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A methanol engine and engine cooling technology, which is applied to engine starting, engine components, combustion engines, etc., can solve problems such as cold starting of methanol engines, and achieve the effect of improving economy and emissions
Inactive Publication Date: 2011-01-19
TAIYUAN UNIV OF TECH
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The methanol fuel injected during startup is heated by the methanol steam generator to generate methanol vapor, which increases the concentration of methanol vapor entering the cylinder, making the combustible mixture reach the ignition limit, and solves the problem of cold start of the M100 methanol engine when the ambient temperature is low
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specific Embodiment approach 1
[0017] as attached figure 1 , attached figure 2 , attached image 3 And attached Figure 4 As described above, a kind of M100 methanol engine cold start device claimed by the present invention includes a controller 1, a methanol steam generator 2, a water temperature sensor 3, an indicator light 4, a DC contactor 5, a methanol steam generator temperature sensor 6, and a storage battery Positive pole 7, battery negative pole 8, positive pole terminal 9, electronically controlled alcohol injector 10, alcohol injector seat 11, negative pole power cord 12, negative pole pole pole 13, positive pole power cord 14, spring leaf 15, PTC ceramic thermistor 16 , Electrode 17, shell 18, electronically controlled alcohol injector signal line 19, insulating block 20, evaporation chamber 21, connecting plate 22, throat 23, methanol vapor channel 24, annular evaporation column 25, signal line 26, intake manifold 27, throttle valve 28.
[0018] The methanol steam generator 2 is fixed betw...
specific Embodiment approach 2
[0021] as attached figure 1 , attached figure 2 , attached image 3 And attached Figure 4Said, implement the above-mentioned cold start method of a kind of M100 methanol engine cold start device of the present invention, this method is when the methanol engine starts, controller 1 detects engine cooling water temperature by engine water temperature sensor 3, and controller 1 passes water temperature sensor The temperature feedback signal of 3 judges whether the engine cooling water temperature is higher than the set value of 16°C. If the engine cooling water temperature is higher than 16°C, the methanol steam generator 2 does not work; otherwise, if the engine cooling water temperature is lower than 16°C, the controller 1 sends a signal, The DC contactor 5 connects the positive power line 14 and the battery positive circuit, and the current flows from the positive power line 14 of the battery through the positive power line 14, the terminal post 9, the electrode 17, the sp...
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Abstract
The invention relates to a cold start device and a cold start method of an M100 methanol engine. The device comprises a controller, a methanol steam generator, a water temperature sensor, a DC contactor and a temperature sensor of the methanol steam generator. The method comprises the following steps: the controller detects the cooling water temperature of the engine through the water temperaturesensor of the engine; when the water temperature is lower than 16 DEG C, the DC contactor is switched on, and a PTC ceramic thermistor is used for heating; when the temperature in an evaporation cavity is higher than 180 DEG C, an electrically-controlled methanol spraying device sprays methanol into the evaporation cavity, the methanol sprayed on an annular evaporation column is heated and evaporated into methanol steam, and the methanol steam enters an intake manifold of the engine through a methanol steam channel and a throat opening on a connecting plate; and after cold start of the engineis performed, the cold start device stops working. In the invention, when the engine is in the cold start, the concentration of the combustible gas mixture entering a cylinder reaches the firing limit, and the engine is started, thereby solving the problem of the cold start of the methanol engine.
Description
technical field [0001] The invention relates to an engine cold start device and a method thereof, in particular to a device and a cold start method for an M100 methanol engine cold start. Background technique [0002] For areas with scarce oil resources, using relatively abundant coal resources to develop coal-based methanol alternative fuels for vehicles is an important way to solve regional energy security problems. The production process of methanol is relatively simple, and the sources of raw materials are diverse. Methanol can be produced from coal, oil and natural gas. Methanol has good combustion performance, low emission, mature production process, low cost, convenient transportation and storage, and is regarded as the most promising alternative fuel for vehicles. [0003] However, the latent heat of vaporization of methanol is large (1101kJ·kg-1), which is 3.7 times that of gasoline (297kJ·kg-1). At the same temperature (20°C), the evaporation of methanol fuel is ...
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