Oil-saving engine with invariable transmission arm of force
By improving the design of the crank-connecting rod assembly, adopting a long rack, auxiliary shaft, and improved power output shaft, and utilizing a ratchet and one-way transmission mechanism, the problem of no effective driving torque at the crank transmission angle was solved, achieving a constant power transmission arm and improving fuel efficiency and power output stability.
Patent Information
- Application Number
- CN202511379467.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-23
- Publication Date
- 2025-11-18
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing crank-connecting rod mechanism has no effective driving torque when the crank transmission angle is 0° or 180°, resulting in unstable power output, high energy consumption, and low power output efficiency.
An improved crank-connecting rod assembly is adopted, including a long rack, an auxiliary shaft, and an improved power output shaft. The power transmission arm remains unchanged through a ratchet mechanism and a one-way transmission mechanism. Power is transmitted by an energy storage component and an elastic steel bar to form a stable drive cycle.
It increases drive shaft torque, improves fuel efficiency, and achieves stable power output and reduced energy consumption.
Smart Images

Figure CN120968877A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of fuel-efficient engines, specifically a fuel-efficient engine with a fixed power transmission arm. Background Technology
[0002] Currently, single-cylinder engines, widely used in both diesel and gasoline engines, require the following mechanisms and systems to complete energy conversion, achieve a working cycle, and ensure continuous normal operation over extended periods. Gasoline engines consist of two main mechanisms and five major systems: the crankshaft and connecting rod mechanism, valve train, fuel supply system, lubrication system, cooling system, ignition system, and starting system. Diesel engines consist of the same two main mechanisms and four major systems: the crankshaft and connecting rod mechanism, valve train, fuel supply system, lubrication system, cooling system, and starting system. It is evident that both gasoline and diesel engines rely heavily on a key moving component—the crankshaft and connecting rod mechanism—which is crucial for the engine's working cycle and energy conversion. The crankshaft and connecting rod mechanism comprises the engine block, piston and connecting rod assembly, crankshaft, and flywheel. During the power stroke, the piston, under the pressure of the combustion gases, moves linearly within the master cylinder, which is converted into rotational motion of the crankshaft via the connecting rod, and then outputs power through the crankshaft. During the intake, compression, and exhaust strokes, the flywheel releases energy, converting the crankshaft's rotational motion back into linear motion of the piston. However, the existing crank-connecting rod mechanism, in which the piston is directly connected to the crankshaft via the connecting rod, has a fatal weakness: when the crank transmission angle is 0° or 180°, the mechanism is stationary because there is no effective driving torque on the driven crank, which is called a "dead point". Furthermore, the continuous change of the crank output lever arm makes it impossible to output power stably and effectively, thus greatly reducing the power output efficiency and resulting in high energy consumption. Summary of the Invention
[0003] To address the shortcomings of existing technologies, this invention provides a fuel-efficient engine with a constant power transmission arm, thus solving the problems mentioned in the background section.
[0004] To achieve the above objectives, the present invention is implemented through the following technical solution: a fuel-saving engine with a constant power transmission arm, comprising a test bench and an engine combustion chamber body mounted on the test bench, and further comprising an auxiliary shaft mounted in the test bench, an improved crank-connecting rod assembly that cooperates with the engine combustion chamber body, and an improved power output shaft. The improved crank-connecting rod assembly includes a long rack, and a gear is mounted on the improved power output shaft. The gear is connected to the improved power output shaft by a ratchet mechanism. When the long rack moves downward, it can engage the gear and rotate the improved power output shaft; otherwise, it cannot transmit power.
[0005] The improved crankshaft and connecting rod assembly is mounted on an auxiliary shaft at one end away from the engine combustion chamber body and is used to drive the auxiliary shaft to rotate. The improved power output shaft and the auxiliary shaft are connected by a one-way transmission mechanism. When the gear drives the improved power output shaft to rotate, the one-way transmission mechanism drives the auxiliary shaft to rotate. Otherwise, the power cannot be connected.
[0006] The auxiliary shaft includes an energy storage component for carrying the improved crankshaft and connecting rod assembly upward and compressing the gas in the engine combustion chamber body when the auxiliary shaft rotates.
[0007] Preferably, the auxiliary shaft is located below the improved power output shaft. The auxiliary shaft includes a power transmission shaft A and a power transmission shaft B. An energy storage component connects the power transmission shaft A and the power transmission shaft B. A one-way transmission mechanism connects the power transmission shaft A. An improved crank-connecting rod assembly connects the power transmission shaft B.
[0008] Preferably, the energy storage component includes a power transmission wheel A and a power transmission wheel B, which are rotatably mounted on a shaft. Power transmission bosses are provided on the opposite sides of power transmission wheel A and power transmission wheel B. The power transmission bosses are staggered and there are gaps between adjacent ones. The two sets of power transmission bosses can transmit power. Two sets of elastic steel bars are connected between power transmission wheel A and power transmission wheel B. When power transmission wheel A rotates, the elastic steel bars will undergo elastic deformation and twist. Then, the torsional force of the elastic steel bars can be transmitted to power transmission wheel B to realize power transmission.
[0009] Preferably, the unidirectional transmission mechanism includes sprocket A, sprocket B and chain. Sprocket A is mounted on the improved power output shaft using a ratchet mechanism, and sprocket B is mounted on the power transmission shaft A using a ratchet mechanism. The chain connects sprocket A and sprocket B. When the gear drives the improved power output shaft to rotate, sprocket A can then drive the power transmission shaft A to rotate using the chain and sprocket B.
[0010] Preferably, the improved crank-connecting rod assembly includes a crankshaft and a connecting rod. The crankshaft is mounted on the power transmission shaft B. One end of the connecting rod is connected to the crankshaft, and the other end is rotatably connected to the bottom end of a long rack. The top end of the long rack is used to connect to a piston.
[0011] Preferably, the power transmission shaft A, power transmission wheel A, power transmission wheel B and power transmission shaft B are all coaxially arranged, and the crankshaft is coaxially arranged with power transmission shaft B.
[0012] Preferably, the elastic steel bars are arranged in a ring array and are divided into inner and outer layers. The elastic steel bars in the inner layer are parallel to the auxiliary shaft, while the elastic steel bars in the outer layer are inclined at equal angles.
[0013] Preferably, the improved power output shaft extends laterally through the test stand and is rotatably connected to it, and a flywheel is also installed on the improved power output shaft.
[0014] Compared with the prior art, the present invention has the following beneficial effects:
[0015] This fuel-efficient engine with a constant power transmission arm achieves its effect by incorporating a long rack, an auxiliary shaft, and an improved power output shaft. A key feature of crankshaft connecting rod engines is that the power arm of the drive shaft periodically changes between zero and the crankshaft circumference. In this application, combustion causes the piston to move downwards, and the piston, through the reciprocating motion of the long rack, rotates the improved power output shaft. Furthermore, the rotation of the improved power output shaft, in turn, rotates the auxiliary shaft, compressing the gas and forming a cycle. Compared to existing technologies where the power transmission arm remains constant (a fixed value), this significantly increases the drive shaft torque, thereby improving fuel efficiency. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of the present invention;
[0017] Figure 2 This is a partial structural diagram of the present invention;
[0018] Figure 3 This is a schematic diagram of the improved power output shaft of the present invention;
[0019] Figure 4 This is a structural connection diagram of the improved power output shaft and long rack of the present invention;
[0020] Figure 5 This is a connection diagram of the improved power output shaft and auxiliary shaft of the present invention;
[0021] Figure 6 This is a front view of the improved power output shaft and auxiliary shaft of the present invention;
[0022] Figure 7 This is a connection diagram of the improved crank-connecting rod assembly and the improved power output shaft of the present invention;
[0023] Figure 8 This is a structural separation diagram of the unidirectional transmission mechanism of the present invention;
[0024] Figure 9 This is a schematic diagram of the energy storage component of the present invention.
[0025] In the diagram: 1. Bench; 2. Engine combustion chamber body; 3. Improved crankshaft and connecting rod assembly; 301. Long rack; 302. Crankshaft; 303. Connecting rod; 4. Auxiliary shaft; 401. Energy storage component; 4011. Power transmission wheel A; 4012. Power transmission wheel B; 4013. Power transmission boss; 4014. Elastic steel bar; 402. Power transmission shaft A; 403. Power transmission shaft B; 5. Improved power output shaft; 501. Gear; 6. One-way transmission mechanism; 601. Sprocket A; 602. Sprocket B; 603. Chain; 7. Flywheel. Detailed Implementation
[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0027] It should be noted that all directional indications in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.
[0028] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0029] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.
[0030] like Figures 1-9As shown, a fuel-saving engine with a constant power transmission arm includes a test bench 1 and an engine combustion chamber body 2 mounted on the test bench 1. It also includes an auxiliary shaft 4 mounted in the test bench 1, an improved crankshaft and connecting rod assembly 3 that cooperates with the engine combustion chamber body 2, and an improved power output shaft 5. The improved crankshaft and connecting rod assembly 3 includes a long rack 301. A gear 501 is mounted on the improved power output shaft 5. The gear 501 is connected to the improved power output shaft 5 by a ratchet mechanism. When the long rack 301 moves downward, it can mesh with the gear 501 and rotate the improved power output shaft 5. Otherwise, it cannot transmit power.
[0031] The improved crankshaft and connecting rod assembly 3 is mounted on the auxiliary shaft 4 at one end away from the engine combustion chamber body 2 and is used to drive the auxiliary shaft 4 to rotate. The improved power output shaft 5 is connected to the auxiliary shaft 4 by a one-way transmission mechanism 6. When the gear 501 rotates the improved power output shaft 5, the one-way transmission mechanism 6 rotates the auxiliary shaft 4. Otherwise, the power cannot be connected.
[0032] The auxiliary shaft 4 includes an energy storage component 401 for carrying the improved crankshaft connecting rod assembly 3 upward and compressing the gas in the engine combustion chamber body 2 when the auxiliary shaft 4 rotates.
[0033] The test bench 1 includes multiple sets of support plates. The engine combustion chamber body 2 is directly installed above the middle position of the test bench 1. The piston is installed inside the engine combustion chamber body 2. In addition, spark plugs, valve train components, fuel line components, etc. need to be installed.
[0034] The improved power output shaft 5 extends laterally through the test stand 1 and is connected to the test stand 1 using a bearing. The auxiliary shaft 4 is also arranged laterally and is connected to the test stand 1 using a bearing.
[0035] In an optional embodiment, the auxiliary shaft 4 is located below the improved power output shaft 5. The auxiliary shaft 4 includes a power drive shaft A402 and a power drive shaft B403. An energy storage component 401 connects the power drive shaft A402 and the power drive shaft B403. A one-way transmission mechanism 6 connects the power drive shaft A402. An improved crank-connecting rod assembly 3 connects the power drive shaft B403.
[0036] In this embodiment, the auxiliary shaft 4 is divided into two sections, which can be connected to the power source. When the power transmission shaft A402 applies power to cause the energy storage component 401 to twist, the torsional force can be used to rotate the power transmission shaft B403.
[0037] In an optional embodiment, the energy storage component 401 includes a power transmission wheel A4011 and a power transmission wheel B4012, which are rotatably mounted on a shaft. Power transmission bosses 4013 are provided on opposite sides of both power transmission wheels A4011 and B4012. These power transmission bosses 4013 are staggered and have gaps between adjacent ones. The two sets of power transmission bosses 4013 can transmit power. Two sets of elastic steel bars 4014 are connected between power transmission wheels A4011 and B4012. When power transmission wheel A4011 rotates, the elastic steel bars 4014 undergo elastic deformation and twist, and the torsional force of the elastic steel bars 4014 can be transmitted to power transmission wheel B4012, thus realizing power transmission.
[0038] In this embodiment, when the power transmission wheel A4011 rotates, it can cause the power transmission wheel B4012 to rotate through the power transmission boss 4013. However, there is a gap in the power transmission boss 4013 when it rotates. Therefore, the power transmission wheel A4011 and the power transmission wheel B4012 can rotate relative to each other. This relative rotation space can cause the elastic steel rod 4014 to undergo elastic deformation.
[0039] In an optional embodiment, the one-way transmission mechanism 6 includes sprocket A601, sprocket B602, and chain 603. Sprocket A601 is mounted on the improved power output shaft 5 using a ratchet mechanism, and sprocket B602 is mounted on the power transmission shaft A402 using a ratchet mechanism. Chain 603 connects sprocket A601 and sprocket B602. When gear 501 rotates with the improved power output shaft 5, sprocket A601 can rotate with the power transmission shaft A402 using chain 603 and sprocket B602.
[0040] In this embodiment, when the improved power output shaft 5 rotates clockwise, sprocket A601 can rotate sprocket B602 via chain 603, thereby rotating the power transmission shaft A402. When rotating in the opposite direction, sprocket A601 and sprocket B602 slip.
[0041] In an optional embodiment, the improved crank-connecting rod assembly 3 includes a crankshaft 302 and a connecting rod 303. The crankshaft 302 is mounted on a power transmission shaft B403. One end of the connecting rod 303 is connected to the crankshaft 302, and the other end is rotatably connected to the bottom end of a long rack 301. The top end of the long rack 301 is used to connect to a piston.
[0042] In this embodiment, the improved crank connecting rod assembly 3 adopts the design in the prior art. The difference from the prior art is that a long rack 301 is added. Therefore, it is necessary to extend the length of the power chamber so that the long rack 301 can move freely up and down.
[0043] In an optional embodiment, the power drive shaft A402, power transmission wheel A4011, power transmission wheel B4012 and power drive shaft B403 are all coaxially arranged, and the crankshaft 302 is coaxially arranged with the power drive shaft B403.
[0044] In an optional embodiment, the elastic steel rods 4014 are arranged in a ring array and are divided into inner and outer layers. The elastic steel rods 4014 in the inner layer are parallel to the auxiliary shaft 4, and the elastic steel rods 4014 in the outer layer are inclined at equal angles.
[0045] In this embodiment, the torsion of the elastic steel rods 4014 in the inner and outer layers can achieve the effect of storing energy.
[0046] In an optional embodiment, an improved power output shaft 5 extends laterally through and is rotatably connected to the test stand 1, and a flywheel 7 is also mounted on the improved power output shaft 5.
[0047] In this embodiment, the piston is obstructed after the pressure in the engine combustion chamber body 2 increases, and its movement is obstructed, its speed slows down, or it may even stop. However, the improved power output shaft 5 continues to rotate clockwise under the inertia of the flywheel 7. At this time, the elastic steel rod 4014 of the energy storage component 401 elastically stores the rotational energy transmitted from the improved power output shaft 5.
[0048] In operation, state 1: The piston is at the top of the engine combustion chamber body 2, and the valve has just opened. At this time, an external force applies torque clockwise from the improved power output shaft 5, and the auxiliary shaft 4 rotates clockwise under the drive of the improved power output shaft 5 via the chain 603 (e.g., Figure 5 As shown), the long rack 301 and piston move downward to draw in the oil-gas mixture. The reason for the improved power output shaft 5 driving the auxiliary shaft 4 to rotate through sprockets A601 and B602, instead of the gear 501 directly driving the long rack 301 downward, is that the gear 501 is a one-way wheel installed with a ratchet mechanism. When the gear 501 is resisted and does not move, when the improved power output shaft 5 rotates clockwise, relative sliding occurs between the improved power output shaft 5 and the gear 501. However, when the piston presses the long rack 301 downward to do work, the long rack 301 drives the gear 501 to rotate clockwise. At this time, there is no relative sliding between the gear 501 and the improved power output shaft 5, and the improved power output shaft 5 can be driven to rotate clockwise.
[0049] At this time, the piston is obstructed after the pressure in the engine combustion chamber body 2 increases, and the speed of movement is slowed down or may even stop. However, the improved power output shaft 5 continues to rotate clockwise under the inertia of the flywheel 7. At this time, the elastic steel rod 4014 of the energy storage component 401 elastically stores the rotational energy transmitted from the improved power output shaft 5.
[0050] State 2: Compression Stroke
[0051] When the elastic deformation of the elastic steel rod 4014 in the energy storage component 401 reaches a certain level and the reaction force generated is large enough, it drives the long rack 301 and piston to compress the gas upward until it reaches the top of the engine combustion chamber body 2.
[0052] State 3: Power Stroke
[0053] At this moment, the gas mixture inside the cylinder is ignited, and the pressure generated by the explosion of the gas mixture pushes the piston and the long rack 301 downward to do work. At the same time, on the other hand, the energy storage component 401 connected to the auxiliary shaft 4 converts the energy stored during the compression of the gas into torque, which drives the auxiliary shaft 4 to rotate clockwise and actively pulls the long rack 301 downward to do work. That is, at this time, the piston presses down, the crankshaft 302 pulls down, and at the same time acts on the long rack 301, driving the gear 501 to drive the improved power output shaft 5 to do work downward.
[0054] Because the lever arm that drives the improved power output shaft 5 to rotate at gear 501 is constant, the fuel engine with this structure is called a constant lever arm fuel engine.
[0055] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.
[0056] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.
[0057] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A fuel-efficient engine with a constant power transmission arm, comprising a test bench (1) and an engine combustion chamber body (2) mounted on the test bench (1), characterized in that: It also includes an auxiliary shaft (4) installed in the test stand (1), an improved crankshaft and connecting rod assembly (3) that cooperates with the engine combustion chamber body (2), and an improved power output shaft (5). The improved crankshaft and connecting rod assembly (3) includes a long rack (301). A gear (501) is installed on the improved power output shaft (5). The gear (501) is connected to the improved power output shaft (5) by a ratchet mechanism. When the long rack (301) moves downward, it can mesh with the gear (501) and rotate the improved power output shaft (5). Otherwise, it cannot transmit power. The improved crank connecting rod assembly (3) is mounted on an auxiliary shaft (4) at one end away from the engine combustion chamber body (2) and is used to drive the auxiliary shaft (4) to rotate. The improved power output shaft (5) is connected to the auxiliary shaft (4) by a one-way transmission mechanism (6). When the gear (501) rotates the improved power output shaft (5), the one-way transmission mechanism (6) rotates the auxiliary shaft (4). Otherwise, the power cannot be connected. The auxiliary shaft (4) includes an energy storage component (401) for carrying the improved crankshaft connecting rod assembly (3) upward and compressing the gas in the engine combustion chamber body (2) when the auxiliary shaft (4) rotates.
2. The fuel-saving engine with unchanged power transmission arm according to claim 1, characterized in that: The auxiliary shaft (4) is located below the improved power output shaft (5). The auxiliary shaft (4) includes a power transmission shaft A (402) and a power transmission shaft B (403). An energy storage component (401) connects the power transmission shaft A (402) and the power transmission shaft B (403). A one-way transmission mechanism (6) connects the power transmission shaft A (402). An improved crank-connecting rod assembly (3) connects the power transmission shaft B (403).
3. The fuel-saving engine with unchanged power transmission arm according to claim 2, characterized in that: The energy storage component (401) includes a power transmission wheel A (4011) and a power transmission wheel B (4012), which are rotatably mounted on a shaft. Power transmission bosses (4013) are provided on the opposite side of the power transmission wheel A (4011) and the power transmission wheel B (4012). The power transmission bosses (4013) are staggered and there are gaps between adjacent ones. The two sets of power transmission bosses (4013) can transmit power. Two sets of elastic steel rods (4014) are connected between the power transmission wheel A (4011) and the power transmission wheel B (4012). When the power transmission wheel A (4011) rotates, the elastic steel rods (4014) will undergo elastic deformation and twist. Then the torsional force of the elastic steel rods (4014) can be transmitted to the power transmission wheel B (4012) to realize power transmission.
4. The fuel-saving engine with unchanged power transmission arm according to claim 3, characterized in that: The one-way transmission mechanism (6) includes sprocket A (601), sprocket B (602) and chain (603). Sprocket A (601) is mounted on the improved power output shaft (5) using a ratchet mechanism. Sprocket B (602) is mounted on the power transmission shaft A (402) using a ratchet mechanism. Chain (603) connects sprocket A (601) and sprocket B (602). When gear (501) rotates with the improved power output shaft (5), sprocket A (601) can rotate with the power transmission shaft A (402) using chain (603) and sprocket B (602).
5. The fuel-saving engine with a constant power transmission arm according to claim 4, characterized in that: The improved crank-connecting rod assembly (3) includes a crankshaft (302) and a connecting rod (303). The crankshaft (302) is mounted on the power transmission shaft B (403). One end of the connecting rod (303) is connected to the crankshaft (302), and the other end is rotatably connected to the bottom end of a long rack (301). The top end of the long rack (301) is used to connect to the piston.
6. The fuel-saving engine with a constant power transmission arm according to claim 5, characterized in that: The power transmission shaft A (402), power transmission wheel A (4011), power transmission wheel B (4012) and power transmission shaft B (403) are all coaxially arranged, and the crankshaft (302) is coaxially arranged with the power transmission shaft B (403).
7. The fuel-saving engine with unchanged power transmission arm according to claim 3, characterized in that: Both sets of elastic steel rods (4014) are arranged in a ring array and are divided into inner and outer layers. The elastic steel rods (4014) in the inner layer are parallel to the auxiliary shaft (4), while the elastic steel rods (4014) in the outer layer are inclined at equal angles.
8. The fuel-saving engine with unchanged power transmission arm according to claim 1, characterized in that: The improved power output shaft (5) extends laterally through the stand (1) and is rotatably connected to it. A flywheel (7) is also installed on the improved power output shaft (5).