CN111412059B - Internal combustion engine energy recycling structure - Google Patents
Internal combustion engine energy recycling structure Download PDFInfo
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- CN111412059B CN111412059B CN202010201174.XA CN202010201174A CN111412059B CN 111412059 B CN111412059 B CN 111412059B CN 202010201174 A CN202010201174 A CN 202010201174A CN 111412059 B CN111412059 B CN 111412059B
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- piston
- internal combustion
- combustion engine
- plunger
- plunger pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B41/00—Engines characterised by special means for improving conversion of heat or pressure energy into mechanical power
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
- F02B63/06—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/32—Engines characterised by connections between pistons and main shafts and not specific to preceding main groups
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention discloses an energy recycling structure of an internal combustion engine, which is arranged on an internal combustion engine body and comprises a swing lever and a double-acting plunger pump; a rod body of a swing lever arranged along the left-right direction is hinged on the internal combustion engine body, and one end of the swing lever extends into the piston cylinder and is positioned below the piston; the double-acting plunger pump comprises a pair of coaxially arranged plunger cavities with opposite cavities, a plunger rod is arranged in the two plunger cavities in a sliding fit manner, a machine body of the double-acting plunger pump is arranged in parallel with the piston cylinder and is fixedly arranged on the machine body of the internal combustion engine, and the middle part of a plunger rod of the double-acting plunger pump is hinged and connected with the other end of the swinging lever; the lower end surface of the piston and the upper end surface of the clamping flange connector are respectively provided with a pressure joint surface or a pressure joint part corresponding to the positions of the swing lever. The internal combustion engine has a simple energy recycling structure, is convenient to implement, and can utilize lost inertia potential energy, so that the energy utilization rate of the internal combustion engine is improved.
Description
Technical Field
The invention relates to an energy recovery mechanism, in particular to a kinetic energy recovery structure suitable for a reciprocating piston type internal combustion engine, and belongs to the technical field of internal combustion engines.
Background
An internal combustion engine is a heat engine that directly converts the heat energy released by burning fuel inside the machine into power. The internal combustion engine in the broad sense includes not only reciprocating piston, rotary piston and free piston engines but also jet engines of the rotary vane type, but the internal combustion engine is generally referred to as a piston engine.
The piston type internal combustion engine is the most common in the past, the working process of the piston type engine usually comprises air inlet, compression, expansion work and exhaust, namely, heat energy is converted into mechanical energy through combustion of fuel in an engine cylinder body, when the third stroke works, the piston is stressed above and moves downwards in an accelerated manner, work is performed on a crankshaft through a connecting rod, the rotating speed of the crankshaft is higher, fuel waste gas after the work is completed is directly discharged out of the engine cylinder body, the acting force generated by the piston part is only less than 1/3 to generate torque, and the rest separation and the inner wall of the cylinder body generate severe friction force to cause high temperature; on the other hand, when the center line of the reciprocating motion direction of the piston passes through the axial lead of the crankshaft (namely the positions of an upper dead point and a lower dead point), the effective moment arm is small, and the energy conversion rate is low; on the other hand, the piston does reciprocating acceleration and deceleration movement, and a large amount of inertia energy of the piston is lost. The biggest disadvantage of the piston engine is therefore the low energy utilization, which is only about 30%.
In order to reduce the kinetic energy consumption and reduce the inertial energy loss of the piston, the industry generally adopts a mode of shortening the length of a connecting rod and reducing the weight of the piston, but the effect of the traditional method is not ideal, and the reduction of the inertia of the piston does not completely disappear and consumes a large amount of power.
Disclosure of Invention
Aiming at the problems, the invention provides an energy recycling structure of an internal combustion engine, which is simple in structure and convenient to implement, and can utilize lost inertia potential energy so as to improve the energy utilization rate of the internal combustion engine.
In order to achieve the purpose, as an embodiment of the invention, a piston cylinder, a piston connecting rod and a crankshaft are arranged in an internal combustion engine body, the crankshaft distributed with a crankshaft counterweight is hinged and connected with the bottom end of the piston connecting rod through a flange connector, the top end of the piston connecting rod is hinged and connected with the piston through a piston pin, and the piston is arranged in the piston cylinder in a sliding fit manner;
the internal combustion engine energy recycling structure is arranged on the internal combustion engine body and comprises a swing lever and a double-acting plunger pump; a rod body of a swing lever arranged along the left-right direction is hinged on the internal combustion engine body, and one end of the swing lever extends into the piston cylinder and is positioned below the piston; the double-acting plunger pump comprises a pair of coaxially arranged plunger cavities with opposite cavities, a plunger rod is arranged in the two plunger cavities in a sliding fit manner, a machine body of the double-acting plunger pump is arranged in parallel with the piston cylinder and is fixedly arranged on the machine body of the internal combustion engine, and the middle part of a plunger rod of the double-acting plunger pump is hinged and connected with the other end of the swinging lever; the lower end surface of the piston and the upper end surface of the clamping flange connector are respectively provided with a pressure joint surface or a pressure joint part corresponding to the positions of the swing lever.
As a further improvement scheme of the invention, the swing lever and the double-acting plunger pump are respectively arranged in two sets in bilateral symmetry relative to the piston cylinder.
As a further improvement scheme of the invention, the single-action plunger pump further comprises a plunger cavity which is coaxially arranged relative to the piston cylinder and the cavity opening of which is over against the piston cylinder, a plunger rod is arranged in the plunger cavity in a sliding fit manner and provided with a return spring, and a body of the single-action plunger pump is fixedly arranged on the body of the internal combustion engine and is positioned right below the crankshaft; the lower end surface of the flange connector is provided with a pressure joint surface or a pressure joint part corresponding to the position of the plunger rod of the single-action plunger pump.
As another embodiment of the invention, a piston cylinder, a piston connecting rod and a crankshaft are arranged in an internal combustion engine body, the crankshaft distributed with a crankshaft counterweight is hinged and connected with the bottom end of the piston connecting rod through a flange connector, the top end of the piston connecting rod is hinged and connected with the piston through a piston pin, and the piston is arranged in the piston cylinder in a sliding fit manner;
the energy recycling structure of the internal combustion engine is arranged on an internal combustion engine body and comprises a single-action plunger pump, the single-action plunger pump comprises a plunger cavity which is coaxially arranged relative to a piston cylinder and a cavity opening of which is opposite to the piston cylinder, a plunger rod is arranged in the plunger cavity in a sliding fit manner and provided with a return spring, and the body of the single-action plunger pump is fixedly arranged on the internal combustion engine body and is positioned right below a crankshaft; the lower end surface of the flange connector is provided with a pressure joint surface or a pressure joint part corresponding to the position of the plunger rod of the single-action plunger pump.
Compared with the prior art, the internal combustion engine has a simple structure and is convenient to implement, and when the technical scheme of the double-acting plunger pump is adopted, the mechanical energy of the part of the piston close to the dead point is used for pumping the double-acting plunger pump in the process that the piston moves downwards from the top dead point position to the bottom dead point position; when the technical scheme of the single-acting plunger pump is adopted, in the process that the piston moves downwards from the top dead center position to the bottom dead center position, partial mechanical energy is used for pumping the single-acting plunger pump when the piston approaches a dead center; the loss of the mechanical potential energy of the piston can be reduced, and the redundant inertia energy of the piston can be absorbed and utilized, so that the energy utilization rate of the internal combustion engine is improved.
Drawings
FIG. 1 is a schematic structural view of a piston at a top dead center in embodiment 1 of the present invention;
FIG. 2 is a schematic structural diagram of the piston at the bottom dead center according to embodiment 1 of the present invention;
FIG. 3 is a schematic structural diagram of a piston at the top dead center according to embodiment 3 of the present invention;
fig. 4 is a schematic structural diagram of the piston at the bottom dead center according to embodiment 3 of the present invention.
In the figure: 1. the device comprises a piston cylinder, 2, a piston, 3, a piston connecting rod, 4, a crankshaft, 5, a flange connector, 6, a swing lever, 7, a double-acting plunger pump and 8, and a single-acting plunger pump.
Detailed Description
The present invention will be further explained with reference to the drawings (hereinafter, the swing direction of the piston rod 3 will be described as the left-right direction).
In the working process of the internal combustion engine, in the process that the piston 2 moves from the top dead center position or the bottom dead center position of the piston cylinder 1 to the middle, the transmission angle between the piston connecting rod 3 and the crankshaft 4 is increased from 0 degree to 90 degrees; during the movement of the piston 2 from the middle of the piston cylinder 1 to the top dead center position or the bottom dead center position, the transmission angle decreases from 90 ° to 0 °. When the piston 2 is in the middle position of the piston cylinder 1, the energy conversion rate between the piston 2 and the crankshaft 4 is the maximum, the transmission angle is 90 degrees, and the conversion rate is 1; the conversion rate is minimum when the piston 2 approaches the top dead center position and the bottom dead center position, the transmission angle is 0 degree when the piston approaches the top dead center position and the bottom dead center position, and the conversion rate is 0 degree. When mechanical potential energy is transmitted between the piston 2 and the crankshaft 4, the transmission angle is proportional to the magnitude of the energy conversion rate; when the transmission angle is zero, the conversion is zero, and thus "dead spots" occur. The internal combustion engine energy recycling structure is used for converting and utilizing mechanical energy to reduce the loss of mechanical potential energy of the piston 2 when the piston 2 is close to a dead point and the crankshaft 4 cannot better convert the kinetic energy of the piston 2.
Example 1
As shown in fig. 1 and 2, a piston cylinder 1, a piston 2, a piston connecting rod 3 and a crankshaft 4 are arranged in an internal combustion engine body, the crankshaft 4 distributed with a crankshaft counterweight is hinged and installed with the bottom end of the piston connecting rod 3 through a flange connector 5, the top end of the piston connecting rod 3 is hinged and installed with the piston 2 through a piston pin, and the piston 2 is arranged in the piston cylinder 1 in a sliding fit manner.
As an embodiment of the invention, the internal combustion engine energy recycling structure is arranged on an internal combustion engine body and comprises a swing lever 6 and a double-acting plunger pump 7; a rod body of a swing lever 6 arranged along the left-right direction is hinged on the internal combustion engine body, and one end of the swing lever 6 extends into the piston cylinder 1 and is positioned below the piston 2; the double-acting plunger pump 7 comprises a pair of coaxially arranged plunger cavities with opposite cavities, a plunger rod is arranged in the two plunger cavities in a sliding fit mode at the same time, a machine body of the double-acting plunger pump 7 is arranged in parallel to the piston cylinder 1 and is fixedly arranged on the machine body of the internal combustion engine, the middle of the plunger rod of the double-acting plunger pump 7 is hinged and connected with the other end of the swing lever 6, namely the pumping direction of the plunger rod of the double-acting plunger pump 7 is consistent with the swing direction of the swing lever 6. The swing lever 6 and the double-acting plunger pump 7 may be respectively provided in left-right symmetry in two sets with respect to the piston cylinder 1.
The lower end surface of the piston 2 and the upper end surface of the clamping flange connector 5 are respectively provided with a pressure joint surface or a pressure joint component corresponding to the position of the swing lever 6.
When the internal combustion engine works, in the process that the piston 2 moves downwards from the top dead center position to the bottom dead center position, when the piston 2 approaches the bottom dead center position, a pressure contact surface or a pressure contact component on the lower end surface of the piston 2 touches one end of the swing lever 6 and drives the swing lever 6 to rotate along the hinge center thereof to swing, and the other end of the swing lever 6 swings upwards and drives a plunger rod of the double-acting plunger pump 7 to move upwards to perform pumping action in the upward direction; when the piston 2 returns, in the process that the piston 2 moves upwards from the bottom dead center position to the top dead center position, when the piston 2 approaches the top dead center position, the pressure contact surface or the pressure contact part on the upper end surface of the flange connector 5 touches one end of the swing lever 6 and drives the swing lever 6 to rotate along the hinge center thereof to swing, the other end of the swing lever 6 swings downwards and drives the plunger rod of the double-acting plunger pump 7 to move downwards to perform downward pumping action, and the double-acting plunger pump 7 completes one working cycle. I.e. using part of the mechanical energy when the piston 2 is near "dead center" for pumping the double acting plunger pump 7.
Example 2
On the basis of embodiment 1, still include single-action plunger pump 8, single-action plunger pump 8 includes for piston cylinder 1 coaxial setting and the accent just to the plunger chamber that piston cylinder 1 set up, the plunger rod sliding fit sets up in the plunger chamber, and is equipped with reset spring on the plunger rod, single-action plunger pump 8's organism fixed mounting is on the internal-combustion engine organism, and is located bent axle 4 under.
Example 3
As shown in fig. 3 and 4, a piston cylinder 1, a piston 2, a piston connecting rod 3 and a crankshaft 4 are arranged in an internal combustion engine body, the crankshaft 4 distributed with a crankshaft counterweight is hinged and installed with the bottom end of the piston connecting rod 3 through a flange connector 5, the top end of the piston connecting rod 3 is hinged and installed with the piston 2 through a piston pin, and the piston 2 is arranged in the piston cylinder 1 in a sliding fit manner.
As another embodiment of the invention, the internal combustion engine energy recycling structure is arranged in an internal combustion engine body and comprises a single-action plunger pump 8, the single-action plunger pump 8 comprises a plunger cavity which is coaxially arranged relative to the piston cylinder 1 and a cavity opening of which is opposite to the piston cylinder 1, a plunger rod is arranged in the plunger cavity in a sliding fit manner and provided with a return spring, and the body of the single-action plunger pump 8 is fixedly arranged on the internal combustion engine body and is positioned right below the crankshaft 4.
The lower end surface of the flange connector 5 is provided with a pressure joint surface or a pressure joint part corresponding to the position of the plunger rod of the single-action plunger pump 8.
When the internal combustion engine works, in the process that the piston 2 moves downwards from the top dead center position to the bottom dead center position, when the piston 2 approaches the bottom dead center position, the pressure joint surface or the pressure joint part of the lower end surface of the Karan connecting head 5 touches the plunger rod of the single-action plunger pump 8 and drives the plunger rod of the single-action plunger pump 8 to move downwards to compress the return spring to perform downward pumping action, and redundant piston inertia energy is absorbed; when the piston 2 returns, in the process that the piston 2 moves upwards from the bottom dead center position to the top dead center position, the plunger rod of the single-action plunger pump 8 moves upwards to reset under the action of the reset elastic force of the reset spring, and the single-action plunger pump 8 completes one working cycle. I.e. using part of the mechanical energy when the piston 2 is near "dead center" for pumping the single-acting plunger pump 8.
Claims (4)
1. An energy recycling structure of an internal combustion engine is characterized in that a piston cylinder (1), a piston (2), a piston connecting rod (3) and a crankshaft (4) are arranged in an internal combustion engine body, the crankshaft (4) distributed with a crankshaft counterweight is hinged and installed and connected with the bottom end of the piston connecting rod (3) through a flange connector (5), the top end of the piston connecting rod (3) is hinged and installed and connected with the piston (2) through a piston pin, and the piston (2) is arranged in the piston cylinder (1) in a sliding fit manner; it is characterized in that the preparation method is characterized in that,
the internal combustion engine energy recycling structure is arranged on an internal combustion engine body and comprises a swing lever (6) and a double-acting plunger pump (7); a rod body of a swing lever (6) arranged along the left-right direction is hinged on the internal combustion engine body, and one end of the swing lever (6) extends into the piston cylinder (1) and is positioned below the piston (2); the double-acting plunger pump (7) comprises a pair of coaxially arranged plunger cavities with opposite cavity openings, a plunger rod is arranged in the two plunger cavities in a sliding fit manner at the same time, the machine body of the double-acting plunger pump (7) is arranged in parallel to the piston cylinder (1) and is fixedly arranged on the machine body of the internal combustion engine, and the middle part of the plunger rod of the double-acting plunger pump (7) is hinged and connected with the other end of the swing lever (6); the lower end surface of the piston (2) and the upper end surface of the clamping flange connector (5) are respectively provided with a pressure joint surface or a pressure joint component corresponding to the position of the swing lever (6).
2. The internal combustion engine energy recovery structure according to claim 1, wherein the swing lever (6) and the double-acting plunger pump (7) are provided in two sets in bilateral symmetry with respect to the piston cylinder (1), respectively.
3. The energy recycling structure of the internal combustion engine according to claim 1 or 2, characterized by further comprising a single-acting plunger pump (8), wherein the single-acting plunger pump (8) comprises a plunger cavity which is coaxially arranged relative to the piston cylinder (1) and the cavity opening of which is opposite to the piston cylinder (1), a plunger rod is arranged in the plunger cavity in a sliding fit manner and provided with a return spring, and a body of the single-acting plunger pump (8) is fixedly arranged on the body of the internal combustion engine and is positioned right below the crankshaft (4); the lower end surface of the clamping flange connector (5) is provided with a pressure joint surface or a pressure joint part corresponding to the position of the plunger rod of the single-action plunger pump (8).
4. An energy recycling structure of an internal combustion engine is characterized in that a piston cylinder (1), a piston (2), a piston connecting rod (3) and a crankshaft (4) are arranged in an internal combustion engine body, the crankshaft (4) distributed with a crankshaft counterweight is hinged and installed and connected with the bottom end of the piston connecting rod (3) through a flange connector (5), the top end of the piston connecting rod (3) is hinged and installed and connected with the piston (2) through a piston pin, and the piston (2) is arranged in the piston cylinder (1) in a sliding fit manner; it is characterized in that the preparation method is characterized in that,
the energy recycling structure of the internal combustion engine is arranged on an internal combustion engine body and comprises a single-action plunger pump (8), wherein the single-action plunger pump (8) comprises a plunger cavity which is coaxially arranged relative to a piston cylinder (1) and a cavity opening of which is opposite to the piston cylinder (1), a plunger rod is arranged in the plunger cavity in a sliding fit manner and provided with a return spring, and the body of the single-action plunger pump (8) is fixedly arranged on the internal combustion engine body and is positioned right below a crankshaft (4); the lower end surface of the clamping flange connector (5) is provided with a pressure joint surface or a pressure joint part corresponding to the position of the plunger rod of the single-action plunger pump (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010201174.XA CN111412059B (en) | 2020-03-20 | 2020-03-20 | Internal combustion engine energy recycling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010201174.XA CN111412059B (en) | 2020-03-20 | 2020-03-20 | Internal combustion engine energy recycling structure |
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| Publication Number | Publication Date |
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| CN111412059A CN111412059A (en) | 2020-07-14 |
| CN111412059B true CN111412059B (en) | 2022-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010201174.XA Active CN111412059B (en) | 2020-03-20 | 2020-03-20 | Internal combustion engine energy recycling structure |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR615145A (en) * | 1925-09-12 | 1926-12-30 | Internal combustion engine, four-stroke per revolution | |
| CN1083567A (en) * | 1992-07-30 | 1994-03-09 | 颜敏政 | Differential stroke internal combustion engine |
| CN102913325A (en) * | 2012-11-13 | 2013-02-06 | 青岛大学 | Engine hydraulic energy and power conversion device |
| CN103133132A (en) * | 2013-03-20 | 2013-06-05 | 青岛大学 | Hydraulic and mechanical double-power output method |
| CN107100723A (en) * | 2017-06-21 | 2017-08-29 | 天津大学 | Hydraulic free-piston engine energy recycle device and energy reclaiming method |
| CN108286469A (en) * | 2018-03-08 | 2018-07-17 | 陈立斌 | A technique for improving internal combustion energy conversion ratio |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102733942A (en) * | 2012-07-09 | 2012-10-17 | 青岛大学 | Single-side crankshaft connecting rod hydraulic engine |
-
2020
- 2020-03-20 CN CN202010201174.XA patent/CN111412059B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR615145A (en) * | 1925-09-12 | 1926-12-30 | Internal combustion engine, four-stroke per revolution | |
| CN1083567A (en) * | 1992-07-30 | 1994-03-09 | 颜敏政 | Differential stroke internal combustion engine |
| CN102913325A (en) * | 2012-11-13 | 2013-02-06 | 青岛大学 | Engine hydraulic energy and power conversion device |
| CN103133132A (en) * | 2013-03-20 | 2013-06-05 | 青岛大学 | Hydraulic and mechanical double-power output method |
| CN107100723A (en) * | 2017-06-21 | 2017-08-29 | 天津大学 | Hydraulic free-piston engine energy recycle device and energy reclaiming method |
| CN108286469A (en) * | 2018-03-08 | 2018-07-17 | 陈立斌 | A technique for improving internal combustion energy conversion ratio |
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| CN111412059A (en) | 2020-07-14 |
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