CN210195889U

CN210195889U - Positive pressure leading-in active crankcase blow-by gas system of reciprocating engine

Info

Publication number: CN210195889U
Application number: CN201920871800.9U
Authority: CN
Inventors: Qinghai Su; 苏清海
Original assignee: Nissan Energy Technology Xiamen Co ltd
Current assignee: Nissan Energy Technology Xiamen Co ltd
Priority date: 2019-06-11
Filing date: 2019-06-11
Publication date: 2020-03-27
Anticipated expiration: 2029-06-11

Abstract

The utility model provides a leading-in active crankcase of reciprocating engine malleation blows gas leakage system. The top of the second crankcase is communicated with the bottom of the second cylinder block, and the top of the first engine oil pan is fixedly mounted at the bottom of the second crankcase. The utility model provides a leading-in active crankcase of reciprocating engine malleation blows gas leakage system has effectively to get rid of and blows gas leakage, reduce and bring machine oil into intake manifold's shortcoming, form the cooling action to crankcase machine oil, the factor that machine oil high temperature volatilizees and the degradation has also been reduceed, make machine oil can be more stable lubricate and the heat dissipation, the situation of the accumulation of parts surface fatlute carbonization has been reduced, machine oil life can prolong, air mixer device simple structure, do not need complicated controlling means, reducible maintenance cost, be fit for using the engine design of using different fuels, and can all effectively improve the efficiency of blowing gas leakage system, wide economy and environmental protection benefit have.

Description

Positive pressure leading-in active crankcase blow-by gas system of reciprocating engine

Technical Field

The utility model relates to an engine crankcase blows gas leakage system field, especially relates to a leading-in active crankcase of reciprocating engine malleation blows gas leakage system.

Background

The present PCV valve system design mode mainly comprises a breather pipe arranged on an air inlet pipeline, a breather pipe connected to a valve chamber cover, the valve chamber cover is provided with a PCV one-way valve or an oil-gas separator, and then connected to an air inlet manifold at the rear end of the throttle valve, and the air inlet manifold sucks the blow-by gas through negative pressure.

The design has a defect for a long time, the volume in the space of a valve chamber is mainly fresh air from an air inlet pipeline during the operation of an engine, and a large amount of blow-by gas is accumulated at the lower part of a reciprocating engine and cannot be effectively discharged because the proportion of a blow-by gas mixture is greater than that of the fresh air of the air inlet pipeline. The components of the blow-by gas are unburned substances with higher concentration than that of the exhaust pipe, such as hydrocarbon HC and carbon monoxide CO, which are in a high-temperature oxygen-deficient state, the high temperature promotes a large amount of engine oil mist in the crankcase to volatilize, the air inlet pipeline generates large negative pressure vacuum in different engine working conditions, such as abrupt acceleration and deceleration or abrupt actuation of a supercharger, the engine oil mist is sucked into the air inlet pipeline, so that solid carbide accumulation is formed in a throttle valve, an air inlet manifold and an air inlet valve in the air inlet pipeline, a spark plug and a catalyst converter (a three-way catalyst) are polluted, the engine carbon deposition causes air inlet efficiency, ignition efficiency, the catalyst converter and the like to be incapable of achieving ideal working conditions, the engine carbon deposition also causes faults, the maintenance difficulty is increased, engine parts are abraded, and the service life of the engine is influenced.

Therefore, it is desirable to provide a positive pressure induction active crankcase blow-by system for a reciprocating engine that solves the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a reciprocating engine malleation leading-in active crankcase blows gas leakage system has solved the problem that can't effectively get rid of and blow gas leakage.

In order to solve the technical problem, the utility model provides a reciprocating engine malleation is leading-in active crankcase and is blown gas leakage system, include: the first engine comprises a first air inlet manifold, a first air inlet valve, a first exhaust manifold, a first cylinder body, a cylinder combustion chamber, a first piston, a first crankcase, an air outlet pipeline structure and an air inlet pipeline structure, wherein the top of the first crankcase is communicated with the bottom of the first cylinder body, the first piston is arranged in the first cylinder body, the first air inlet manifold and the first exhaust manifold are respectively communicated with two sides of the top of the first cylinder body, the first air inlet valve is arranged at the right end of the first air inlet manifold, the first exhaust valve is arranged at the left end of the first exhaust manifold, the cylinder combustion chamber is arranged in the first cylinder body and positioned at the top of the piston, and the air outlet pipeline structure is communicated with the top of the left side of the first crankcase, the air inlet pipeline structure is communicated with the bottom of the right side of the first crankcase.

Preferably, when the engine for introducing positive pressure of the reciprocating engine into the active crankcase blow-by gas system is a natural air intake engine, the method further comprises: the second engine comprises a second air inlet manifold, a second air inlet valve, a first valve chamber cover, a second air outlet valve, a second air outlet manifold, a second cylinder body, a second piston, a first connecting rod, a second crankcase and a first engine oil pan, the top of the second crankcase is communicated with the bottom of the second cylinder body, the top of the first engine oil pan is fixedly arranged at the bottom of the second crankcase, the second piston is arranged in the second cylinder body, the top end of the first connecting rod is rotatably connected to the bottom of the second piston, the surface of the first connecting rod is rotatably connected to the surface of the inner wall of the second crankcase through a rotating shaft, the second air inlet manifold and the second air outlet manifold are respectively communicated with two sides of the top of the second cylinder body, and the second air inlet valve is arranged at the right end of the second air inlet manifold, the second exhaust valve is arranged at the left end of the second exhaust manifold, and the first valve chamber cover is arranged on the right side of the top of the second cylinder body.

Preferably, the bottom of the left side of the second crankcase is communicated with a first air mixing and injecting pipeline, the first air mixing and injecting pipeline is provided with a first air injecting one-way valve device, and the left end of the first air mixing and injecting pipeline is communicated with a second air filter.

Preferably, the left end of the second intake manifold is communicated with an air pipeline, the left end of the air pipeline is communicated with a first air filter, a first air metering valve is arranged between the first air filter and the air pipeline, a first throttle valve is arranged between the air pipeline and the second intake manifold, an air blowing and discharging pipeline is communicated between the right side of the top of the second cylinder body and the right side of the top of the second intake manifold, and a first pipeline one-way valve device is arranged on the air blowing and discharging pipeline.

Preferably, when the engine in which the positive pressure of the reciprocating engine is introduced into the active crankcase blow-by gas system is an air-intake supercharged engine, the method further comprises the following steps: the third engine comprises a third intake manifold, a second valve chamber cover, a third exhaust valve, a third exhaust manifold, a third piston, a second connecting rod, a third crankcase, a third cylinder block and a second engine oil pan, wherein the top of the third crankcase is communicated with the bottom of the third cylinder block, the top of the second engine oil pan is fixedly installed at the bottom of the third crankcase, the third piston is arranged in the third cylinder block, the top end of the second connecting rod is rotatably connected to the bottom of the third piston, the surface of the second connecting rod is rotatably connected to the surface of the inner wall of the third crankcase through a fixed shaft, the third intake manifold and the third exhaust manifold are respectively communicated with two sides of the top of the third crankcase, and the third exhaust valve is arranged at the left end of the third exhaust manifold, the second valve cover is arranged on the right side of the top of the third cylinder body.

Preferably, the bottom of the left side of the third crankcase is communicated with a second air mixing and injecting pipeline, the left end of the second air mixing and injecting pipeline is communicated with a fourth air filter, and a second air injection check valve device is arranged on the second air mixing and injecting pipeline.

Preferably, the left end of the third intake manifold is communicated with a supercharger rear end air pipeline, the left end of the supercharger rear end air pipeline is communicated with an air supercharger, the input end of the air supercharger is communicated with a third air filter, a second air flow meter is arranged between the third air filter and the air supercharger, a second throttle valve is arranged between the air supercharger and an air pipeline at the rear end of the supercharger, a first section of an air blowing and leaking pipeline is communicated between the input end of the air supercharger and the left side of the top of the third cylinder body, a second section of an air blowing and leaking outlet pipeline is communicated between the top of the third air inlet manifold and the left side of the top of the third cylinder block, and a third pipeline check valve device is arranged on the first section of the air-leakage air outlet pipeline, and a second pipeline check valve device is arranged on the second section of the air-leakage air outlet pipeline.

Preferably, the air inlet pipeline structure is communicated with an air and combustion improver mixing device, and the air and combustion improver can be a solvent or compound containing oxygen molecules, a fluorine compound, an engine carbon remover and a carbon deposit cleaning agent.

Compared with the prior art, the utility model provides a reciprocating engine malleation leading-in active crankcase blows gas leakage system has following beneficial effect:

the utility model provides a positive pressure leading-in active crankcase blow-by gas system of a reciprocating engine, when the engine of the reciprocating engine with positive pressure led into the active second crankcase blow-by gas system is a natural air intake engine, the blowing and leaking gas is conveyed to a second air inlet manifold through a blowing and leaking gas outlet pipeline, the pulsating pressure is generated and becomes pushing force by the motion of a second piston, the air flow is controlled to be one-way scavenging by the cooperation of a first air injection one-way valve device arranged on a first air mixing and injecting pipeline at the lower part of a second crankcase and a first pipeline one-way valve device arranged on the blowing and leaking gas outlet pipeline at the top part of a second cylinder body, and fresh air or air combustion improver mixture enters from the lower part of the second crankcase, the blow-by gas with higher specific gravity can be quickly sent out from the blow-by gas pipeline at the upper part of the engine, and the blow-by gas can be efficiently and continuously led into the second air intake manifold to enter the combustion chamber; the blowing and leaking gas is conveyed to a third air inlet manifold through the combined action of the first section of the blowing and leaking gas outlet pipeline and the second section of the blowing and leaking gas outlet pipeline, the pulsating pressure is generated and becomes pushing force by the movement of a second piston, a second air injection one-way valve device arranged on a second air mixing and injecting pipeline at the lower part of a third crankcase, a third pipeline one-way valve device arranged on the first section of the blowing and leaking gas outlet pipeline at the top of a third cylinder body and a second pipeline one-way valve device arranged on the second section of the blowing and leaking gas outlet pipeline are matched to control the air flow to be one-way scavenging, and fresh air or air combustion improver mixture entering from the lower part of the third crankcase can rapidly blow and leak gas with higher specific gravity out from the blowing and leaking pipeline at the upper part of the engine, the blowing and leaking gas can be efficiently and continuously guided into the third air inlet manifold to enter a combustion chamber, so that the blowing and leaking gas can be, the engine oil cooling device has the advantages that the defect that instant vacuum suction is formed when the load of the engine speed is changed can be greatly reduced, the engine oil is brought into an air inlet manifold, the cooling effect on the engine oil of a crankcase is formed, the factors of high-temperature volatilization and deterioration of the engine oil are reduced, the engine oil can be more stably lubricated and radiated, the accumulated state of oil sludge carbonization on the surface of a machine part is reduced, the fresh air mixed gas enters the air inlet manifold to increase the oxygen content of the blowing and leaking gas of a crankshaft, the cooling effect of the air mixed gas can reduce the temperature of the engine oil, the fresh air mixed gas scavenging can bring carbon monoxide, carbon dioxide and high-temperature water gas into a combustion chamber, the pollutants are greatly improved from entering the engine oil, the effective recycling of the blowing and leaking gas can greatly reduce the fuel consumption, the fuel consumption can be improved by, the method does not need a complex control device, can reduce the maintenance cost, is suitable for the design of engines using different fuels, can effectively improve the efficiency of a blow-by gas system, and has wide economic and environmental benefits.

Drawings

FIG. 1 is a diagram illustrating the operation of a reciprocating engine with positive pressure lead-in active crankcase blow-by system according to the present invention;

FIG. 2 is a schematic view of a naturally aspirated engine;

fig. 3 is a schematic structural view of an intake supercharged engine.

Reference numbers in the figures:

100/200/300 positive pressure lead-in active crankcase blow-by gas system for reciprocating engine

1-1, an intake stroke, 1-2, a compression stroke, 1-3, a power stroke, 1-4, an exhaust stroke, 1, a first engine, 11, a first intake manifold, 12, a first intake valve, 13, a first exhaust valve, 14, a first exhaust manifold, 15, a first cylinder block, 16, a cylinder combustion chamber, 17, a first piston, 18, a first crankcase, 19, an outlet pipe structure, 20, an inlet pipe structure;

01. blow-by gas, 02, air or an air oxidizer mixture, 2, a second engine, 31, a first air filter, 32, a first air flow meter, 33, an air line, 34, a first throttle, 35, a second intake manifold, 36, a second intake valve, 37, a blow-by gas outlet conduit, 38, a first conduit check valve device, 39, a first valve chamber cover, 40, a second exhaust valve, 41, a second exhaust manifold, 42, a second air filter, 43, a first air mixture injection conduit, 44, a second cylinder block, 45, a second piston, 46, a first connecting rod, 47, a second crankcase, 48, a first air injection check valve device, 49, a first engine oil pan;

3. a third engine, 50, a third air filter, 51, a second air flow meter, 52, a supercharger rear-end air line, 53, a second throttle valve, 54, a third intake manifold, 55, a blow-by gas outlet line first section, 56, a blow-by gas outlet line second section, 57, a second line check valve device, 58, a second valve cover, 59, a third exhaust valve, 60, a third exhaust manifold, 61, a third piston, 62, a second connecting rod, 63, a third crankcase, 64, an air supercharger, 65, a supercharger front-end line, 66, a fourth air filter, 67, a third cylinder block, 68, a second air mixture injection line, 69, a second air injection check valve device, 70, a second engine oil pan, 71, a third line check valve device.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and embodiments.

Referring to fig. 1, fig. 2 and fig. 3, wherein fig. 1 is a diagram illustrating the operation of a reciprocating engine with positive pressure leading-in active crankcase blow-by system according to the present invention; FIG. 2 is a schematic view of a naturally aspirated engine; fig. 3 is a schematic structural view of an intake supercharged engine.

Positive pressure induction active crankcase blow-by gas system for a reciprocating engine, comprising: a first engine 1, where the first engine 1 includes a first intake manifold 11, a first intake valve 12, a first exhaust valve 13, a first exhaust manifold 14, a first cylinder block 15, a cylinder combustion chamber 16, a first piston 17, a first crankcase 18, an exhaust pipe structure 19, and an intake pipe structure 20, a top of the first crankcase 18 is communicated with a bottom of the first cylinder block 15, the first piston 17 is disposed inside the first cylinder block 15, the first intake manifold 11 and the first exhaust manifold 14 are respectively communicated with two sides of the top of the first cylinder block 15, the first intake valve 12 is disposed at a right end of the first intake manifold 11, the first exhaust valve 13 is disposed at a left end of the first exhaust manifold 14, the cylinder combustion chamber 16 is disposed inside the first cylinder block 15 and located at a top of the piston 17, the air outlet duct structure 19 is communicated with the top of the left side of the first crankcase 18, and the air inlet duct structure 20 is communicated with the bottom of the right side of the first crankcase 18.

When the engine of the positive pressure leading-in active crankcase blow-by gas system of the reciprocating engine is a natural air inlet engine, the method further comprises the following steps: a second engine 2, wherein the second engine 2 includes a second intake manifold 35, a second intake valve 36, a first valve chamber cover 39, a second exhaust valve 40, a second exhaust manifold 41, a second cylinder block 44, a second piston 45, a first connecting rod 46, a second crankcase 47 and a first engine oil pan 49, the top of the second crankcase 47 is communicated with the bottom of the second cylinder block 44, the top of the first engine oil pan 49 is fixedly mounted on the bottom of the second crankcase 47, the second piston 45 is disposed inside the second cylinder block 44, the top of the first connecting rod 46 is rotatably connected to the bottom of the second piston 45, the surface of the first connecting rod 46 is rotatably connected to the surface of the inner wall of the second crankcase 47 through a rotating shaft, the second intake manifold 35 and the second exhaust manifold 41 are respectively communicated with two sides of the top of the second cylinder block 44, the second intake valve 36 is disposed at the right end of the second intake manifold 35, the second exhaust valve 40 is disposed at the left end of the second exhaust manifold 41, and the first valve cover 39 is disposed at the right side of the top of the second cylinder block 44.

A first air mixture injection pipeline 43 is communicated with the bottom of the left side of the second crankcase 47, a first air injection one-way valve device 48 is arranged on the first air mixture injection pipeline 43, and a second air filter 42 is communicated with the left end of the first air mixture injection pipeline 43.

An air pipe 33 is communicated with the left end of the second air inlet manifold 35, a first air filter 31 is communicated with the left end of the air pipe 33, a first air metering valve 32 is arranged between the first air filter 31 and the air pipe 33, a first throttle valve 34 is arranged between the air pipe 33 and the second air inlet manifold 35, an air blowing and discharging pipe 37 is communicated between the right side of the top of the second air cylinder 44 and the right side of the top of the second air inlet manifold 35, and a first pipe one-way valve device 38 is arranged on the air blowing and discharging pipe 37.

When the engine of the positive pressure guide-in active crankcase blow-by gas system of the reciprocating engine is an air inlet supercharged engine, the positive pressure guide-in active crankcase blow-by gas system further comprises the following steps: a third engine 3, wherein the third engine 3 comprises a third intake manifold 54, a second valve cover 58, a third exhaust valve 59, a third exhaust manifold 60, a third piston 61, a second connecting rod 62, a third crankcase 63, a third cylinder block 67 and a second engine oil pan 70, the top of the third crankcase 63 is communicated with the bottom of the third cylinder block 67, the top of the second engine oil pan 70 is fixedly installed at the bottom of the third crankcase 63, the third piston 61 is arranged in the third cylinder block 67, the top of the second connecting rod 62 is rotatably connected with the bottom of the third piston 61, the surface of the second connecting rod 62 is rotatably connected with the surface of the inner wall of the third crankcase 63 through a fixed shaft, the third intake manifold 54 and the third exhaust manifold 60 are respectively communicated with two sides of the top of the third cylinder block 67, the third exhaust valve 59 is disposed at the left end of the third exhaust manifold 60, and the second valve cover 58 is disposed at the right side of the top of the third cylinder block 67.

A second air mixture injection pipe 68 is communicated with the bottom of the left side of the third crankcase 67, a fourth air filter 66 is communicated with the left end of the second air mixture injection pipe 68, and a second air injection check valve device 69 is arranged on the second air mixture injection pipe 68.

The left end of the third intake manifold 54 is communicated with a supercharger rear-end air pipe 52, the left end of the supercharger rear-end air pipe 52 is communicated with an air supercharger 64, the input end of the air supercharger 64 is communicated with a third air filter 50, a second air flow meter 51 is arranged between the third air filter 50 and the air supercharger 64, a second throttle valve 53 is provided between the air supercharger 64 and the supercharger rear-end air pipe 52, a blow-by gas outlet duct first section 55 communicates between the input of the air booster 64 and the left side of the top of the third cylinder block 67, a second segment 56 of the blow-by gas outlet duct communicates between the top of the third intake manifold 54 and the left side of the top of the third cylinder block 67, and a third pipeline one-way valve device 71 is arranged on the first section 55 of the air-leakage outlet pipeline, and a second pipeline one-way valve device 57 is arranged on the second section 56 of the air-leakage outlet pipeline. 2. The reciprocating engine may be an engine using any fuel.

The reciprocating engine may be a naturally aspirated or an aspirated supercharged engine.

The air inlet opening at the position of the crankcase, which is higher than the upper limit of the oil level of the engine oil, can be arranged at the position of the crankcase, the engine cylinder body or the oil sump of the engine, and an oil gauge pipe can also be used as the air inlet opening.

The air mixing device may be an engine air filter or an additional air filter.

The air inlet pipeline structure 20 is communicated with an air and combustion improver mixing device which is an air pressure pulsation pump, a venturi tube effect or a mechanical pump, the electronic pump adds the combustion improver into the air mixture in a proper proportion and injects the mixture into the air mixture, the air and combustion improver mixing device is provided with an electronic oil nozzle, the electronic oil nozzle or the mechanical oil nozzle sprays the combustion improver into the air mixture, the air inlet pipeline structure 20 adopts an oxygen separation membrane or a nitrogen separation membrane, air in the atmosphere passes through the oxygen separation membrane to form high oxygen-containing air which is favorable for waste gas combustion, the first air inlet manifold 11 and the first exhaust manifold 14 are both provided with one-way valve structures, the one-way valve structures adopt venture tubes, mechanical valves or electronic valves which can be throttling check valves, one-way valves or one-way membranes or any one of the same functional structures, the air and combustion improver mixing device is communicated with an oxygen separation membrane device, the combustion improver can be a solvent or a compound containing oxygen molecules, a fluorine compound, an engine decarbonizer and a carbon deposition cleaning agent, the oxygen separation membrane device is provided with a mechanical or electronic air compression device and an air storage device, the air storage device is provided with a safety relief valve and an automatic drainage device, the combustion improver mixing device and the oxygen separation membrane device are both provided with an explosion-proof valve, and an air inlet connecting pipeline or a combustion improver conveying pipeline and an oxygen conveying pipeline are additionally provided with the explosion-proof valve to prevent a backfire device.

The air inlet pipeline structure 20 is communicated with an air and combustion improver mixing device, and the air and combustion improver can be a solvent or compound containing oxygen molecules, a fluorine compound, an engine carbon remover and a carbon deposit cleaning agent.

The utility model provides a reciprocating engine malleation is leading-in active crankcase and is blown leakage system's theory of operation as follows:

when the engine of the positive pressure leading-in active second crank case 47 blow-by gas system of the reciprocating engine is a natural air inlet engine, the volume of the second crank case 47 is increased to form negative pressure when the second piston 45 moves from the bottom dead center to the top dead center, the second crank case 47 is provided with a first air mixing injection pipeline 43, the first air mixing injection pipeline 43 introduces fresh air or air combustion improver mixture 02, when the first piston 17 moves from the top dead center to the bottom dead center in the air inlet and power stroke, the volume of the second crank case 47 is reduced to form positive pressure, the positive pressure mixes and pushes the air or air combustion improver mixture 02 and the blow-by gas, the blow-by gas is conveyed to the second air inlet manifold 35 through the blow-by gas outlet pipeline 37, the pulsating pressure is generated by the movement of the second piston 45 to become pushing force, the first air injection one-way valve device 48 arranged on the first air mixing injection pipeline 43 at the lower part of the second crank case 47 and the first pipe on the blow-by gas outlet pipeline 37 at the top The passage check valve device 38 is matched to control the air flow to be one-way scavenging air, and fresh air or air combustion improver mixture entering from the lower part of the second crankcase 47 can quickly send out blow-by gas with higher specific gravity from a blow-by gas passage pipeline at the upper part of the engine, and the blow-by gas can be efficiently and continuously introduced into the second air inlet manifold 35 to enter the combustion chamber 16; when the engine of the positive pressure leading-in active crankcase blow-by gas system of the reciprocating engine is an air-in supercharged engine, the volume of the second crankshaft 47 is increased to form negative pressure when the second piston 45 moves from the bottom dead center to the top dead center, the third crankcase 63 is provided with a second air mixing injection pipeline 68, the second air mixing injection pipeline 68 introduces fresh air or air combustion improver mixture 02, when the first piston 17 of the air-in and power stroke moves from the top dead center to the bottom dead center, the volume of the third crankcase 63 is reduced to form positive pressure, the positive pressure mixes and pushes the air or air combustion improver mixture 02 and blow-by gas, the blow-by gas is conveyed to the third air inlet manifold 54 through the combined action of the first section 55 of the blow-by-gas outlet pipeline and the second section 56 of the blow-by-out gas outlet pipeline, the pulse pressure is generated by the movement of the second piston 45 to become pushing force, and the second air injection one-by The third pipeline check valve device 71 on the first section 55 of the blow-by gas outlet pipeline on the top of the cylinder body 67 and the second pipeline check valve device 57 on the second section 56 of the blow-by gas outlet pipeline are matched to control the air flow to be one-way scavenging, the blow-by gas with higher specific gravity can be rapidly sent out from the blow-by gas pipeline on the upper part of the engine, the blow-by gas can be efficiently and continuously led into the third air inlet manifold 54 to enter the combustion chamber 16, the blow-by gas can be effectively removed in the way, the influence of the intake pulsation or negative pressure change of the air inlet end of the engine can be avoided, the instant vacuum suction force can be greatly reduced when the load of the engine is changed, the engine oil is brought into the air inlet manifold, the cooling effect can be formed on the engine oil of the crankcase, the factors of high-temperature volatilization and degradation of the engine oil can be reduced, and the engine oil can be more, the accumulated state of the oil sludge carbonization on the surface of the machine member is reduced.

when the engine of the positive pressure induction active second crankcase 47 blow-by gas system of the reciprocating engine is a natural intake engine, blow-by gas is conveyed to the second intake manifold 35 through the blow-by gas outlet pipe 37, the pulsating pressure is generated and becomes pushing force by the movement of the second piston 45, the air flow is controlled to be one-way scavenging by the cooperation of the first air injection one-way valve device 48 arranged on the first air mixing injection pipe 43 at the lower part of the second crankcase 47 and the first pipe one-way valve device 38 arranged on the blow-by gas outlet pipe 37 at the top part of the second cylinder 44, and the blow-by gas with higher specific gravity can be quickly sent out from the blow-by gas outlet pipe at the upper part of the engine, and the blow-by gas can be efficiently and continuously introduced into the second intake manifold 35 and enter the combustion chamber 16; the blowing-leakage gas is conveyed to the third air inlet manifold 54 through the combined action of the first section 55 of the blowing-leakage gas outlet pipeline and the second section 56 of the blowing-leakage gas outlet pipeline, the pulsating pressure is generated and becomes pushing force by the movement of the second piston 45, the air flow is controlled to be one-way scavenging by the cooperation of the second air injection one-way valve device 69 arranged on the second air mixing and injecting pipeline 68 at the lower part of the third crankcase 63, the third pipeline one-way valve device 71 arranged on the first section 55 of the blowing-leakage gas outlet pipeline at the top part of the third cylinder body 67 and the second pipeline one-way valve device 57 arranged on the second section 56 of the blowing-leakage gas outlet pipeline, the fresh air or the air combustion improver mixture entering from the lower part of the third crankcase 63 can quickly send out the blowing-leakage gas with higher specific gravity from the blowing-leakage pipeline at the upper part of the engine, the blowing-leakage gas can be, the method effectively eliminates blow-by gas, is not influenced by intake pulsation or negative pressure change at the air inlet end of the engine, can greatly reduce the defect that instant vacuum suction is formed when the load of the engine speed changes, and engine oil is brought into an air inlet manifold, has a cooling effect on the crankcase engine oil, and also reduces the factors of high-temperature volatilization and deterioration of the engine oil, so that the engine oil can be more stably lubricated and radiated, and the accumulated state of oil sludge carbonization on the surface of a machine part is reduced, fresh air mixed gas enters to increase the oxygen content of the blow-by gas of a crankshaft, the cooling effect of the air mixed gas can reduce the temperature of the engine oil, carbon monoxide, carbon dioxide and high-temperature water vapor can be brought into a combustion chamber by the fresh air mixed gas scavenging gas, so that the pollutants are greatly improved to be invaded into the engine oil, the effective recovery of the blow-by gas can greatly reduce, the service life of the engine oil is prolonged, the air mixer device has simple structure, does not need a complex control device, can reduce the maintenance cost, is suitable for the design of engines using different fuels, can effectively improve the efficiency of an air blowing and leaking system, and has wide economic and environmental protection benefits.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims

1. A positive pressure induction active crankcase blow-by system for a reciprocating engine, comprising: the first engine comprises a first air inlet manifold, a first air inlet valve, a first exhaust manifold, a first cylinder body, a cylinder combustion chamber, a first piston, a first crankcase, an air outlet pipeline structure and an air inlet pipeline structure, wherein the top of the first crankcase is communicated with the bottom of the first cylinder body, the first piston is arranged in the first cylinder body, the first air inlet manifold and the first exhaust manifold are respectively communicated with two sides of the top of the first cylinder body, the first air inlet valve is arranged at the right end of the first air inlet manifold, the first exhaust valve is arranged at the left end of the first exhaust manifold, the cylinder combustion chamber is arranged in the first cylinder body and positioned at the top of the piston, and the air outlet pipeline structure is communicated with the top of the left side of the first crankcase, the air inlet pipeline structure is communicated with the bottom of the right side of the first crankcase.

2. The positive pressure induction active crankcase blow-by system of claim 1, further comprising, when the engine in which positive pressure is induced into the active crankcase blow-by system is a naturally aspirated engine: the second engine comprises a second air inlet manifold, a second air inlet valve, a first valve chamber cover, a second air outlet valve, a second air outlet manifold, a second cylinder body, a second piston, a first connecting rod, a second crankcase and a first engine oil pan, the top of the second crankcase is communicated with the bottom of the second cylinder body, the top of the first engine oil pan is fixedly arranged at the bottom of the second crankcase, the second piston is arranged in the second cylinder body, the top end of the first connecting rod is rotatably connected to the bottom of the second piston, the surface of the first connecting rod is rotatably connected to the surface of the inner wall of the second crankcase through a rotating shaft, the second air inlet manifold and the second air outlet manifold are respectively communicated with two sides of the top of the second cylinder body, and the second air inlet valve is arranged at the right end of the second air inlet manifold, the second exhaust valve is arranged at the left end of the second exhaust manifold, and the first valve chamber cover is arranged on the right side of the top of the second cylinder body.

3. The positive pressure induction active crankcase blow-by gas system according to claim 2, wherein a first air mixture injection conduit is connected to a bottom portion of a left side of the second crankcase, a first air injection check valve device is disposed on the first air mixture injection conduit, and a second air filter is connected to a left end of the first air mixture injection conduit.

4. The positive pressure induction active crankcase blow-by system of claim 2, wherein an air line is communicated with the left end of the second intake manifold, a first air filter is communicated with the left end of the air line, a first air metering valve is arranged between the first air filter and the air line, a first throttle valve is arranged between the air line and the second intake manifold, a blow-by gas outlet pipe is communicated between the right side of the top of the second cylinder block and the right side of the top of the second intake manifold, and a first pipe check valve device is arranged on the blow-by gas outlet pipe.

5. The positive pressure induction active crankcase blow-by system of claim 1, further comprising, when the engine in which the positive pressure induction active crankcase blow-by system is an air-intake supercharged engine: a third engine, which includes a third intake manifold, a second valve chamber cover, a third exhaust valve, a third exhaust manifold, a third piston, a second connecting rod, a third crankcase, a third cylinder block and a second engine oil pan, wherein the top of the third crankcase is communicated with the bottom of the third cylinder block, the top of the second engine oil pan is fixedly installed at the bottom of the third crankcase, the third piston is disposed inside the third cylinder block, the top end of the second connecting rod is rotatably connected to the bottom of the third piston, the surface of the second connecting rod is rotatably connected to the surface of the inner wall of the third crankcase through a fixing shaft, the third intake manifold and the third exhaust manifold are respectively communicated with two sides of the top of the third cylinder block, and the third exhaust valve is disposed at the left end of the third exhaust manifold, the second valve cover is arranged on the right side of the top of the third cylinder body.

6. The positive pressure induction active crankcase blow-by gas system according to claim 5, wherein a second air mixture injection conduit is connected to a bottom portion of a left side of the third crankcase, a fourth air filter is connected to a left end of the second air mixture injection conduit, and a second air injection check valve device is disposed on the second air mixture injection conduit.

7. The positive pressure induction active crankcase blow-by system of claim 5, wherein the third intake manifold has a left end connected to a supercharger rear end air line, the supercharger rear end air line has a left end connected to an air supercharger, the air supercharger has an input end connected to a third air filter, a second air flow meter is disposed between the third air filter and the air supercharger, a second throttle valve is disposed between the air supercharger and the supercharger rear end air line, a blow-by gas outlet pipe first section is connected between the input end of the air supercharger and the left side of the top of the third cylinder block, a blow-by gas outlet pipe second section is connected between the top of the third intake manifold and the left side of the top of the third cylinder block, and a third pipe check valve device is disposed on the blow-by gas outlet pipe first section, and a second pipeline one-way valve device is arranged on the second section of the air blowing and leaking outlet pipeline.

8. The positive pressure induction active crankcase blow-by system of claim 5, it is characterized in that the air inlet pipeline structure is communicated with an air and combustion improver mixing device, an electronic oil nozzle is arranged on the air and combustion improver mixing device, the air mixing device with the air inlet pipeline structure adopts an oxygen separation membrane or a nitrogen separation membrane, the first air inlet manifold and the first exhaust manifold are both provided with a one-way valve structure, the one-way valve structure adopts a venturi tube, a mechanical valve or an electronic valve, the air and combustion improver mixing device is communicated with an oxygen separation membrane device, the oxygen separation membrane device is provided with a mechanical or electronic air compression device and an air storage device, the air storage device is provided with a safety pressure relief valve and an automatic drainage device, and the combustion improver mixing device and the oxygen separation membrane device are both provided with explosion-proof valves.

9. The positive pressure induction active crankcase blow-by gas system of claim 5 wherein the intake conduit is structurally connected to an air and oxidizer mixing device.