Gas inlet method and device of gas fuel internal combustion engine
A technology for internal combustion engines and gaseous fuels, applied in the direction of internal combustion piston engines, combustion engines, fuel air inlets, etc., can solve the problems of fuel waste, pollutant emissions, intake manifold explosion, etc., to reduce pollutant emissions and avoid mixing The effect of preventing gas residue and preventing fuel from escaping
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Embodiment 1
[0024] Embodiment 1: In order to ensure that gas and air cannot be mixed outside the cylinder, the air intake method provided by the engine cylinder head is as follows figure 1 As shown, an intake device of a gas fuel internal combustion engine includes a cylinder head 100, an intake manifold 200 and a gas main pipe 300, the cylinder head 100 is connected to the intake manifold 200 and the connecting end of the cylinder head 100 and the intake manifold 200 To connect the end face 106, the cylinder head 100 is provided with a first exhaust valve 105a and a second exhaust valve 105b, and the cylinder head 100 is connected with an air channel 101 and a gas channel 102, and the air channel 101 is provided with a corresponding valve on the cylinder head 100. The air intake valve 103 of the gas channel 102 is provided with a corresponding gas intake valve 104 on the cylinder head 100, so that the air channel 101 on the cylinder head 100 can only enter air, and the gas channel 102 can...
Embodiment 2
[0045] Embodiment 2: The difference from Embodiment 1 is that the gas injection generator 400 uses a plug-in gas injection valve. In order to facilitate the installation of the plug-in gas injection valve, image 3 The gas main pipe 300 in the middle can be provided with the second air channel 201A on the intake manifold 200, and the gas manifold 204 is the second gas channel 202B arranged on the intake manifold 200, forming an integral isolation structure intake manifold 200 such as Figure 4 As shown, the multi-channel second gas channel 202B is correspondingly equipped with multiple plug-in gas injection valves, the front of the injection valve in one plug-in gas injection valve is connected with the gas main pipe 300, and the front of the injection valve in multiple plug-in gas injection valves It communicates with the gas main pipe 300, and further, after the connecting surface 106 of the cylinder head 100 is connected with the intake manifold 200, the air channel 101 comm...
Embodiment 3
[0046] Embodiment 3: The difference from Embodiment 1 is that, in order to avoid setting the intake valves that are opened asynchronously and cause the engine structure to be complicated, and to ensure that the drive mechanism of the intake and exhaust valves of the engine is simple and easy to implement, preferably, the air on the engine cylinder head 100 The intake valve 103 and the gas intake valve 104 use a mechanical drive mechanism to realize phase angle synchronous control. Optionally, using a hydraulic mechanism to complete the phase angle opening and closing of the intake and exhaust valves has the same effect. Using a mechanical drive mechanism to achieve air When the phase angle of the opening and closing of the intake valve 103 and the gas intake valve 104 is controlled, in order to ensure that the opening and closing phase angle of the gas injection valve 400 is accurately completed within the phase angle from the opening to closing of the gas intake valve 104, the ...
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