Waste gas chamber structure of motorcycle engine box body
By designing the maze structure and controlling the ventilation holes in the motorcycle engine case, the problem of carrying the engine oil in the exhaust gas is solved, and the effect of exhaust gas is discharged without carrying the engine oil is achieved, and the engine oil is maintained.
Patent Information
- Application Number
- CN202323603658.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-27
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2033-12-27
AI Technical Summary
The exhaust gas chamber of the motorcycle engine case is too small, which causes a large amount of engine oil to be carried when the exhaust gas is discharged quickly, resulting in the problem of reducing engine oil.
A motorcycle engine case exhaust gas chamber structure is designed, and the waste gas is controlled through a maze structure composed of the left crankcase, the right crankcase and the crankcase sealing gas. The flow rate and flow direction form an additional chamber structure and maze route, allowing exhaust gas to stay in it to consume energy and reduce oil carrying.
The effect of exhaust gas discharge without carrying engine oil is achieved. Through the maze structure and the design of ventilation holes, kinetic energy is consumed to condense and return the engine oil, avoid the accumulation of engine oil, and keep the engine oil sufficient.
Smart Images
Figure CN222162770U_ABST
Abstract
Description
Technical field:
[0001] The utility model relates to an exhaust gas chamber structure of a motorcycle engine case. Background technology:
[0002] At present, with the growing development of motorcycles, motorcycle engines are gradually developing towards large displacement, small volume and high compression ratio. When the displacement and compression ratio increase and the volume remains unchanged or decreases, the exhaust gas from the engine case will be discharged quickly due to the small volume of the exhaust chamber. The exhaust gas will be discharged from the case together with a large amount of oil, resulting in a reduction in the engine oil. Summary of the invention:
[0003] In order to solve the above-mentioned problem, the purpose of the utility model is to provide a motorcycle engine case exhaust chamber structure which has a simple structure and solves the problem of exhaust gas carrying engine oil being discharged without increasing the engine volume.
[0004] Technical solution:
[0005] The purpose of the utility model is achieved as follows: a motorcycle engine case exhaust chamber structure, including a left crankcase, a crankcase gasket, a right crankcase, an intake cavity plate, a cavity plate gasket, and an exhaust pipe, characterized in that the exhaust chamber structure is composed of the left crankcase, the right crankcase and the crankcase gasket; the cavity plate gasket and the intake cavity plate are installed on the exhaust inlet of the right crankcase to form an additional chamber structure.
[0006] The motorcycle engine case exhaust chamber structure is characterized in that the exhaust chamber structure is composed of a left crankcase, a right crankcase and a crankcase sealing gasket.
[0007] The exhaust chamber structure of the motorcycle engine case is characterized in that: the exhaust chamber structure and the crankcase sealing gasket are provided with three vents for controlling the flow rate and direction of the airflow. The exhaust chamber structure of the motorcycle engine case is characterized in that: the additional chamber structure and the cavity plate sealing gasket are provided with a vent for controlling the flow rate.
[0008] The exhaust chamber structure of the motorcycle engine case is characterized in that the opening direction of the air intake chamber plate is the same as the movement direction of the clutch.
[0009] The exhaust chamber structure of the motorcycle engine case is characterized in that: when the engine is running at high speed, the exhaust gas will first enter the additional chamber body structure formed by the air intake cavity plate when entering the exhaust chamber, and the chamber body will allow the exhaust gas to stay therein to consume part of the energy and reduce the flow rate. The opening direction of the chamber body structure is consistent with the movement direction of the clutch, avoiding the oil thrown up by the clutch from entering the exhaust chamber; at the same time, the ventilation holes of the cavity plate sealing gasket limit the flow area of the exhaust gas entering the exhaust chamber, reducing the oil carried by the exhaust gas entering the exhaust chamber.
[0010] The exhaust chamber structure of the motorcycle engine case is characterized in that the exhaust gas flows along a specific route under the special maze structure of the exhaust chamber, and under the action of three air vents on the crankcase sealing gasket that control the airflow velocity and direction, airflow counter-attacks are formed at multiple locations, consuming a large amount of kinetic energy. At this time, the engine oil carried by the exhaust gas condenses under the action of the airflow counter-attack, and flows back to the crankcase through the oil return groove of the exhaust chamber without causing oil accumulation. At this time, the exhaust gas no longer carries the engine oil and is discharged from the engine through the exhaust pipe, thereby achieving the effect of exhaust gas discharge without carrying the engine oil.
[0011] Beneficial effects:
[0012] The exhaust chamber of the motorcycle engine case has a compact structure, small size, and easy assembly. It is effective in solving the problem of exhaust gas spraying oil. The flow rate and direction of the exhaust gas are controlled by the air holes of the cavity plate sealing gasket and the crankcase sealing gasket. The additional chamber structure and the labyrinth exhaust chamber structure formed by the intake cavity plate allow the exhaust gas to stay therein to consume energy and flow along a labyrinth route, so that the exhaust gas flow forms a hedge to consume a large amount of kinetic energy, thereby achieving exhaust gas discharge without carrying oil. Description of the drawings:
[0013] Figure 1 It is an exploded view of the installation of the air intake cavity plate of the motorcycle engine described in the utility model.
[0014] Figure 2 It is a schematic diagram of the position of the air intake cavity plate of the motorcycle engine described in the utility model.
[0015] Figure 3 It is a schematic diagram of the left crankcase of a motorcycle engine according to the utility model.
[0016] Figure 4 It is a schematic diagram of a motorcycle engine crankcase sealing gasket according to the utility model.
[0017] Figure 5 It is a schematic diagram of the right crankcase of a motorcycle engine according to the utility model. Specific implementation method:
[0018] The specific structure of the embodiment of the utility model is further described below in conjunction with the accompanying drawings.
[0019] Referring to the accompanying drawings, a motorcycle engine case exhaust chamber structure includes an intake chamber plate (1), M6×10 bolts (2), a chamber plate sealing gasket (3), M6×75 bolts (4), a right crankcase (5), an intake chamber plate opening (11), a clutch (8), a left crankcase (6); an exhaust pipe (7), a left labyrinth chamber (61); a crankcase sealing gasket (9), a crankcase sealing gasket vent (91)(92)(93), a chamber plate sealing gasket vent (31), a right labyrinth chamber (51), and a labyrinth oil return groove (52).
[0020] The right crankcase (5) and the chamber plate gasket (3), the intake chamber plate (1), the M6×10 bolts (2), and the M6×75 bolts (4) form an additional chamber structure, wherein the M6×10 bolts (2) and the M6×75 bolts (4) are fasteners; the left labyrinth chamber (61) of the left crankcase (6) and the right labyrinth chamber (51) of the right crankcase (5) and the crankcase gasket (9) form a labyrinth exhaust chamber structure.
[0021] When the engine is running at a high speed, the exhaust gas in the crankcase enters the additional chamber body through the intake chamber plate opening (11) of the intake chamber plate (1), and the exhaust gas consumes part of its kinetic energy in the additional chamber body. The direction of the intake chamber plate opening (11) is the same as the rotation direction of the clutch (8) above it, avoiding the oil thrown up by the clutch (8) from entering the exhaust chamber; the flow rate of the exhaust gas is then controlled by the chamber plate sealing gasket vent (31) of the chamber plate sealing gasket (3), and the exhaust gas enters the special labyrinth exhaust chamber. Under the action of the crankcase sealing gasket vent (91)(92)(93) of the crankcase sealing gasket (9), the exhaust gas forms multiple counter-flows and consumes a large amount of kinetic energy when flowing in the right labyrinth chamber (51) and the left labyrinth chamber (61), so that the oil condenses and flows back to the crankcase through the labyrinth oil return groove (52), and the exhaust gas is discharged from the engine through the exhaust pipe (7), so that the exhaust gas is discharged from the engine without carrying the oil.
[0022] The exhaust chamber of the motorcycle engine case has a simple structure, which can make the engine more compact and lightweight. Through the special labyrinth chamber structure of the left and right crankcases, the air intake chamber plate is cleverly installed, and vents are opened on the air intake gasket and the crankcase gasket. When the exhaust gas carrying organic oil is discharged from the engine, the special labyrinth chamber structure of the left and right crankcases, the air intake chamber plate, the air intake gasket and the vents on the crankcase gasket slow down the exhaust gas flow rate, form a counter-flow, consume a lot of kinetic energy and cause the oil to condense and reflux, so as to achieve the effect of exhaust gas being discharged from the engine without carrying the oil.
[0023] The above is only a preferred embodiment of the utility model, and does not limit the structure of the utility model in any form. Any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the utility model still falls within the scope of the technical solution of the utility model.
Claims
1. A motorcycle engine case exhaust chamber structure, comprising a left crankcase, a crankcase gasket, a right crankcase, an air intake cavity plate, a cavity plate gasket, and an exhaust pipe, Its characteristics are: The exhaust chamber structure is composed of the left crankcase, the right crankcase and the crankcase sealing gasket; the chamber plate sealing gasket and the intake chamber plate are installed on the exhaust gas inlet of the right crankcase to form an additional chamber structure.
2. The exhaust chamber structure of a motorcycle engine case according to claim 1, Its characteristics are: The opening direction of the air inlet cavity plate is the same as the movement direction of the clutch.
3. The exhaust chamber structure of a motorcycle engine case according to claim 1, Its characteristics are: The additional chamber body structure and the chamber plate sealing gasket thereof are provided with a vent hole for controlling the flow rate.
4. The exhaust chamber structure of a motorcycle engine case according to claim 1, Its characteristics are: The exhaust chamber structure and the crankcase sealing gasket are provided with three vent holes for controlling the air flow velocity and direction.