A kind ofly be applied to piston-engined novel air inlet system and exhaust system
Technical field
The utility model relates to a kind of air inlet system and exhaust system, specifically is a kind of novel air inlet system and exhaust system that are applied on the piston engine.
Background technique
Piston-engined air inlet system and exhaust system are used for automatically, and the control fuel oil enters cylinder and waste gas discharge cylinder.Traditional air inlet system and exhaust system generally all are the unlatchings by cam control turnover valve, and the general using spring control valve stem of closing then of turnover valve automatically resets and closes.This design is used very extensive at present, and technology maturation and work are also reliable, the problem that when still existing valve stem to reset cylinder is impacted; In addition because valve stem needs regular hour and this time to regulate when utilizing spring reset to close, so engine speed to a certain degree the time, the situation that valve stem has little time to reset and closes can occur, limited the further raising of engine speed.
The model utility content
For solving the deficiencies in the prior art, the utility model provides a kind of air inlet system and exhaust system simple in structure, with low cost, good reliability when running up, the problem of bump cylinder head when having solved the ubiquitous valve-closing of existing air inlet system and exhaust system, the working life of having improved cylinder.
The utility model technological scheme that adopts of dealing with problems is:
A kind ofly be applied to piston-engined novel air inlet system and exhaust system, comprise the hollow cylindrical shell that is arranged on the cylinder upper-end surface, the inner headed face of described housing is provided with the port that connects to cylinder, the both ends of the surface of described housing are respectively arranged with air inlet duct and outgassing groove in the position near port, the rotatable cooperation of described enclosure interior is equipped with switch wheel, the periphery of this switch wheel is provided with first air drain that can be communicated with port and air inlet duct and second air drain that can be communicated with port and air vent, interval between described first air drain and second air drain is greater than the width of port, and described switch wheel is connected with power plant by rotating shaft.
Further, the center of described switch wheel is provided with diameter greater than the circular hole of rotating shaft diameter, circular hole is passed in described rotating shaft, is provided with the blade that connects rotating shaft and switch wheel in this circular hole, and the both ends of the surface of described housing are respectively arranged with oil inlet hole and the oil outlet that is communicated with circular hole.
Further, the end face of described housing is provided with the oil gas chamber that is communicated with air inlet duct, and this oil gas chamber is provided with oil nozzle and is used for the import of air leaked-in air.
Further, described first air drain is communicated with air inlet duct by first groove that is arranged on the switch wheel side, and described second air drain is communicated with air vent by second groove that is arranged on the switch wheel another side.
Further, described housing comprises that an end is provided with the hollow cylindrical shell of opening, and the end cap that is used for covering the opening of shell.
The beneficial effects of the utility model: the utility model utilizes switch wheel and goes up the air drain that arranges, cooperate the action of cylinder, finish air inlet and the exhaust of cylinder, realize intake and exhaust owing to adopt switch wheel by rotating, the impact phenomenon that has existed when having solved the conventional engines intake and exhaust, the working life of improving cylinder; And the action of intake and exhaust action and cylinder carries out synchronously, all can reliably working at a high speed or on the lower-speed state; There are not the parts that extend to cylinder interior in this design, and piston compresses more thoroughly, and compression ratio is bigger, promotes the kinetic energy of motor output.Also be provided with blade on the switch wheel in addition and housing is provided with oil inlet hole and oil outlet, realize the turnover of cooling oil when switch wheel rotates by blade, prevent that temperature is too high, guarantee that air inlet system and exhaust system are in suitable temperature and work.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples:
Fig. 1 is STRUCTURE DECOMPOSITION schematic representation of the present utility model;
Fig. 2 is the perspective view of shell of the present utility model;
Fig. 3 is the perspective view of switch wheel of the present utility model.
Embodiment
With reference to Fig. 1, Fig. 2 and Fig. 3, a kind ofly be applied to piston-engined novel air inlet system and exhaust system, comprise the hollow cylindrical shell that is arranged on cylinder 4 upper-end surfaces, the inner headed face of described housing is provided with the port 31 that connects to cylinder 4, the both ends of the surface of described housing are respectively arranged with air inlet duct 32 and outgassing groove 12 in the position near port 31, the rotatable cooperation of described enclosure interior is equipped with switch wheel 2, the periphery of this switch wheel 2 is provided with first air drain 21 that can be communicated with port 31 and air inlet duct 32 and can be communicated with port 31 and second air drain 22 of air vent 12, interval between described first air drain 21 and second air drain 22 is greater than the width of port 31, described switch wheel 2 is connected with power plant by rotating shaft 25, these power plant can be independent power take-off such as motor, it also can be motor itself, by adopting transmission devices such as chain or gear that the bent axle of rotating shaft 25 with motor coupled together, no matter adopting independent motor or motor itself, only is getting final product action and keeping strokes of cylinder 4 of energy maintained switch wheel 2.
As preferably, the center of described switch wheel 2 is provided with diameter greater than the circular hole of rotating shaft 25 diameters, circular hole is passed in described rotating shaft 25, is provided with the blade that connects rotating shaft 25 and switch wheel 2 in this circular hole, and the both ends of the surface of described housing are respectively arranged with oil inlet hole 11 and the oil outlet 33 that is communicated with circular hole.Oil inlet hole 11 is connected inflow pipeline and flowline respectively with oil outlet 33, and in switch wheel 2 rotation processes, under the drive of blade, cooling oil can flow to oil outlet 33 from oil inlet hole 11, reduces the temperature of switch wheel 2, and the assurance system works under suitable temperature.
As preferably, the end face of described housing is provided with the oil gas chamber 5 that is communicated with air inlet duct 32, and this oil gas chamber 5 is provided with oil nozzle 51 and is used for air leaked-in air import 52.Arrange and enter cylinder 4 again after oil gas chamber 5 can allow gasoline and air mix in the chamber, this process can allow gasoline and Air mixing more abundant, improves the efficient of burning.
As preferably, described first air drain 21 is communicated with air inlet duct 32 by first groove 23 that is arranged on switch wheel 2 sides, and described second air drain 22 is communicated with air vent 12 by second groove 24 that is arranged on switch wheel 2 another sides.In addition, described housing comprises that an end is provided with the hollow cylindrical shell 3 of opening, and the end cap 1 that is used for covering the opening of shell 3.
Working principle of the present utility model: with reference to Fig. 1, behind the engine start, suppose that switch wheel 2 clockwise rotates.When piston moves down when air-breathing, first air drain 21 just forwards the position that is communicated with port 31 and air inlet duct 32 to, along with moving down of piston, the mixed gas of air and gasoline is inhaled into cylinder 4 through air inlet duct 32, first air drain 21 and port 31 respectively from oil gas chamber 5, till piston is in lower dead center, finish aspiratory action; Then move compression on the piston, this moment, first air drain 21 turned over port 31 and air inlet duct 32, and port 31 is in closing state, move to top dead center up to piston, port 31 all with the periphery of switch wheel 2 over against, be in closed condition, finish compressed action; Piston is at top dead center, spark plug 6 igniting, piston moves down and promotes bent axle and rotate, this moment port 31 still with the periphery of switch wheel 2 over against, be in closed condition, move down into lower dead center up to piston, finishing the acting action; When piston begins to move exhaust from lower dead center, switch wheel 2 just turns to the position that second air drain 22 is communicated with port 31 and air vent 12, along with moving on the piston, the waste gas in the cylinder 4 is discharged through second air drain 22 and air vent 12 from port 31, finishes the exhaust action; When moving on to top dead center on the piston, switch wheel 2 turns between second air drain 22 and first air drain 21 and just seals port 31 at interval, enters next work cycle process subsequently.
The above is the utility model preferred implementation, and it does not constitute the restriction to the utility model protection domain, so long as realize that with essentially identical means the purpose of this utility model all should belong to protection domain of the present utility model.