Forklift air inlet system
By designing a forklift air intake system including air filter, intake pipe, intake assembly, air pipe, exhaust pipe, check valve and joint, the problems of engine sealing, combustion efficiency, oil consumption and exhaust gas cleanliness in the prior art are solved, and better pressure balance and combustion efficiency are achieved.
Patent Information
- Application Number
- CN202421707892.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-18
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-07-18
AI Technical Summary
The existing forklift air intake system is difficult to ensure the sealing of the internal seals of the engine, improve combustion efficiency, prevent increased oil consumption, and balance the internal pressure of the engine, affecting exhaust gas cleanliness.
A forklift air intake system is designed, including air filters, intake pipes, intake components, air pipes, exhaust pipes, check valves and joints. Through the connection and layout of these components, the pressure balance inside and outside the crankcase is maintained to prevent the impact of positive and negative pressure on engine sealing and oil consumption.
By balancing the internal and external pressures of the crankcase, the impact of positive and negative pressure on engine sealing and oil consumption is reduced, the engine combustion efficiency is improved, the oil consumption is increased, and the forklift exhaust is ensured cleanliness.
Smart Images
Figure CN222924531U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of forklifts, in particular to a forklift air intake system. Background Art
[0002] In order to ensure the sealing performance of the internal seals of the engine, improve the combustion efficiency of the engine, prevent the increase of oil consumption, balance the internal pressure of the engine, and improve the cleanliness of the forklift exhaust gas, a forklift air intake system is developed. Content of the Utility Model
[0003] The utility model aims to solve at least one of the technical problems in the related art to some extent. For this reason, an object of the utility model is to provide a forklift air intake system to ensure the sealing performance of the internal seals of the engine, improve the combustion efficiency of the engine, prevent the increase of oil consumption, and balance the internal pressure of the engine.
[0004] The forklift air intake system proposed by the utility model includes an air filter and an engine. The air outlet end of the air filter is fixedly connected with an intake pipe. The air outlet end of the intake pipe is fixedly connected with an intake assembly. A joint is fixed on the surface of the intake pipe. The other end of the joint is fixed with a trachea. The surface of the intake assembly is fixedly connected with an exhaust pipe. The other end of the exhaust pipe is fixed with a one-way valve. The other ends of the trachea and the one-way valve are both fixed to the engine.
[0005] Preferably, a first end cover and a second end cover are installed on the engine housing. The air outlet of the trachea is fixedly connected with the first end cover, and the one-way valve is assembled on the second end cover.
[0006] Preferably, the intake assembly includes a main engine intake pipe. A throttle valve is fixed at the bottom of the main engine intake pipe. An intake manifold is fixed at the bottom of the throttle valve. The intake manifold is fixedly connected with the engine. The main engine intake pipe is fixedly connected with the intake pipe. The intake manifold is fixedly connected with the exhaust pipe.
[0007] Preferably, the position of the joint should be at a distance from the throttle valve to prevent the backflow of the combustible mixture.
[0008] The beneficial effects of the utility model are as follows: Through the trachea, the exhaust pipe, the one-way valve and the joint, the pressure inside and outside the crankcase is always in a balanced state, which can better reduce the influence of positive and negative pressure on the engine seal and oil consumption, and at the same time further reduce the influence on the cleanliness of the engine exhaust gas. Description of the Drawings
[0009] Figure 1 It is a top view structural schematic diagram of the forklift air intake system proposed by the utility model.
[0010] Figure 2 Schematic three-dimensional structure diagram of the intake system of a forklift proposed by the present utility model.
[0011] Figure 3 Schematic three-dimensional structure diagram of the intake pipe of the intake system of a forklift proposed by the present utility model.
[0012] Figure 4 Schematic diagram of the gas flow structure of the intake system of a forklift proposed by the present utility model.
[0013] In the figure: 1, air filter; 2, intake pipe; 3, air pipe; 4, exhaust pipe; 5, check valve; 21, joint; 6, engine; 61, second end cover; 62, first end cover; 71, main engine intake pipe; 72, intake manifold; 8, throttle valve. Specific embodiments
[0014] Referring to Figures 1-4 , the intake system of the forklift includes an air filter 1 and an engine 6. An intake passage of the forklift is fixed to the air inlet of the air filter 1, and air enters the air filter 1 through the intake passage of the forklift. The air outlet end of the air filter 1 is fixedly connected to an intake pipe 2, and the clean air after being filtered twice by the air filter 1 enters the intake pipe 2. The air outlet end of the intake pipe 2 is fixedly connected to an intake assembly, and the intake assembly includes a main engine intake pipe 71. The bottom of the main engine intake pipe 71 is fixed with a throttle valve 8, the bottom of the throttle valve 8 is fixed with an intake manifold 72, and the intake manifold 72 is fixedly connected to the engine 6. The main engine intake pipe 71 is fixedly connected to the intake pipe 2, and the intake manifold 72 is fixedly connected to the exhaust pipe 4, and the clean air enters the engine 6 to participate in combustion.
[0015] Referring to Figure 4 , where A is air, B is two-stage filtration, C is the crankcase, and D is the cylinder.
[0016] Referring to Figure 1 and Figure 2 , a joint 21 is fixed on the surface of the intake pipe 2, the other end of the joint 21 is fixed with an air pipe 3, the surface of the intake assembly is fixedly connected with an exhaust pipe 4, the other end of the exhaust pipe 4 is fixed with a check valve 5, the other ends of the air pipe 3 and the check valve 5 are fixed with the engine 6, the first end cover 62 and the second end cover 61 are installed on the housing of the engine 6, and the air outlet of the air pipe 3 is fixedly connected to the first end cover 62, and the check valve 5 is assembled on the second end cover 61. The surface of the intake manifold 72 is fixedly connected to the exhaust pipe 4. The engine 6 includes a crankcase B, and the crankcase B is communicated with the air pipe 3 and the exhaust pipe 4. Through the air pipe 3, the exhaust pipe 4, the check valve 5 and the joint 21, the pressure inside and outside the crankcase B is always in a balanced state, which can better reduce the influence of positive and negative pressure on the sealing of the engine 6 and the oil consumption.
[0017] Referring to Figure 2, the position of the joint 21 should be at a distance from the throttle valve 8 to prevent the reverse flow of the combustible mixture, so as to prevent the combustible mixture from flowing back into the intake pipe 2.
[0018] When this device is in use, air A enters the air filter 1 through the forklift intake passage, and after being filtered twice by the air filter 1, the clean air is transported to the intake pipe 2, and then the clean air is transported to the engine 6 through the intake pipe 2 and participates in combustion through the cylinder D. During the operation of the engine 6, due to gas combustion, positive and negative pressure states will appear in the crankcase B. When the air pressure in the crankcase B is slightly higher, the check valve 5 will be opened, and the gas in the crankcase B will be guided to the throttle valve 8 through the exhaust pipe 4 for combustion to release the air pressure in the crankcase B; when a negative pressure is generated in the crankcase B, in order to reduce the impact of the negative pressure on the engine 6's sealing and oil consumption, a small amount of clean air enters the crankcase B through the joint 21 and the air pipe 3 to maintain the pressure balance inside and outside the crankcase B, ensure the sealing performance of the internal seals of the engine 6, improve the combustion efficiency of the engine 6, prevent the increase of oil consumption, balance the internal pressure of the engine 6, and ensure the cleanliness of the forklift exhaust gas forklift intake system.
Claims
1. Forklift air intake system, characterized by: The invention comprises an air filter (1) and an engine (6), wherein the air outlet end of the air filter (1) is fixedly connected to an air intake pipe (2), the air outlet end of the air intake pipe (2) is fixedly connected to an air intake assembly, a joint (21) is fixedly connected to the outer surface of the air intake pipe (2), an air pipe (3) is fixedly connected to the other end of the joint (21), an exhaust pipe (4) is fixedly connected to the surface of the air intake assembly, a one-way valve (5) is fixedly connected to the other end of the exhaust pipe (4), and the other ends of the air pipe (3) and the one-way valve (5) are both fixed to the engine (6).
2. The forklift air intake system according to claim 1, characterized in that: A first end cover (62) and a second end cover (61) are mounted on the casing of the engine (6), the air outlet of the air pipe (3) is fixedly connected to the first end cover (62), and the one-way valve (5) is mounted on the second end cover (61).
3. The forklift air intake system according to claim 1, characterized in that: The air intake assembly comprises an engine main air intake pipe (71), a throttle valve (8) is fixed at the bottom of the engine main air intake pipe (71), an air intake manifold (72) is fixed at the bottom of the throttle valve (8), and the air intake manifold (72) is fixedly connected to the engine (6), the engine main air intake pipe (71) is fixedly connected to the air intake pipe (2), and the air intake manifold (72) is fixedly connected to the exhaust pipe (4).
4. The forklift air intake system according to claim 3, characterized in that: The position of the joint (21) should be kept at a distance from the throttle valve (8) to prevent the backflow of the burning mixed gas.