CN204532534U - Based on the power plant of internal-combustion engine and linear hydraulic pump - Google Patents
Based on the power plant of internal-combustion engine and linear hydraulic pump Download PDFInfo
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- CN204532534U CN204532534U CN201520197231.6U CN201520197231U CN204532534U CN 204532534 U CN204532534 U CN 204532534U CN 201520197231 U CN201520197231 U CN 201520197231U CN 204532534 U CN204532534 U CN 204532534U
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- linear hydraulic
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Abstract
The utility model relates to the power plant being applicable to vehicle, engineering machinery, particularly a kind of power plant based on internal-combustion engine and linear hydraulic pump.It is by eliminating the single cylinder two-stroke motor of valve distribution mechanism and forming containing Hydraulic Power Transmission System two-part of linear hydraulic pump, oil pump and oil hydraulic motor, the hydraulic plunger of linear hydraulic pump is connected with the piston rod of single cylinder two-stroke motor, and the lower end of the linear hydraulic pump pump housing is connected with hydraulic motor lines by high pressure outlet valve.This device does not need the intermediate transfer links such as crank torque output, replaces the rigid mechanical transmission of gearbox and transmission shaft with the Flexible Transmission of high pressure oil, has higher mechanical efficiency, starts easy, the reliable advantage of continuous operation.
Description
Technical field
The utility model relates to the power plant being applicable to vehicle, engineering machinery, particularly a kind of power plant based on internal-combustion engine and linear hydraulic pump.
Background technique
Widely used power plant are traditional stroke piston combustion engines in the car, and the heat energy that its fuel produces is by the outside output torque of piston, connecting rod and crank mechanism, and this moment of torsion passes to wheel by clutch, gearbox, transmission shaft and retarder again.This power delivery mode has its intrinsic problem: first is that intermediate transfer link is many, and mechanism is complicated, and mechanical efficiency is low.Second is passing ability and the steering flexibility that the layout of transmission shaft and gearbox limits vehicle.
Successively carry out the research of hydraulic free-piston engine both at home and abroad over nearly 20 years, belonged to a kind of new type power, be in the technology exploration stage.By the achievement in research delivered both at home and abroad, the engine portion separation structure of hydraulic free-piston engine is relatively simple, but the complicated structure of hydraulic part.What hydraulic free-piston engine exported is hydraulic energy, and piston reset also must rely on hydraulic energy, and maximum technical difficulty is starting process.During engine start, the high-frequency reciprocating motion of piston must rely on hydraulic system.This work for hydraulic system and control put forward very high requirement, require that each FREQUENCY CONTROL valve of hydraulic system is accurate reliable, not only flow wants large, and operating frequency is also enough high, two contradictory faces of these 2 hydraulic applications technology exactly, are difficult to coordinate.This is the main cause that hydraulic free-piston engine does not also have successful Application so far.
The utility model combines the high technical characterstic of traditional combustion engine reliable operation, technology maturation and linear hydraulic pump work efficiency, whole bent axle is replaced with 1/2 bent axle, same dependence flywheel inertia completes piston return, the moment of torsion changing bent axle exports as the hydraulic energy of linear hydraulic pump exports, opposing hydraulic free-piston engine, hydraulic system simplifies greatly, can reach and start reliably conveniently, improve the effect of complete machine mechanical efficiency; Reach direct output hydraulic pressure simultaneously and can drive oil hydraulic motor on wheel, realize the object of Direct wheel drives.Related product is not also had to apply at home and abroad at present.Through retrieval, now and the patent of the similar free-piston engine of the utility model mainly contain:
(1) publication number is the Chinese patent of CN102400783A: the small-size light-weight linear generator systems with two stroke free-piston engines, free-piston engine disclosed in this patent and moving-magnetic type structure are combined as a whole, and form the small linear generator system with two-stroke free-piston engine.
(2) publication number is the Chinese patent of CN102374021A: free-piston engine, and disclosing a kind of complete machine is double-piston double combustion chamber structure, and each firing chamber is all furnished with inlet and exhaust valve, the driving more complicated of assisting agency.The energy of outside output is electric energy.
(3) publication number is the Chinese patent of CN 101363397A: a kind of single-piston hydraulic free-piston engine, disclose a kind of uniflow scavenging two-stroke single piston hydraulic free-piston engine, conventional reciprocating reciprocating engine is removed bent axle, piston is directly integrated with pluger type hydraulic pump, the chemical energy of fuel is directly changed into the hydraulic energy of oil hydraulic pump and outwards output.This patent to be maximumly differently from of the present utility model, and 1. this patent is uniflow scavenging, needs exhaust valve and special valve actuating mechanism, causes complete machine structure complicated.This patent must promote piston reset with hydraulic energy, and must start with hydraulic energy, causes hydraulic system structure very complicated, and control system is also very complicated, starts very difficult, and running is also very difficult continuously.2., because do not have the external movement parts that can embody piston movement position, the top dead center position of piston and oil spout or time of ignition are not easy to determine.
(4) publication number is the Chinese patent of CN 1957179A: the opposed cylinder free piston engine of opposed pistons, and this patent is made up of outer piston in a pair and oil hydraulic pump, also claims opposed free-piston engine.Be characterized in, completed the gas exchanges in cylinder by the movement of inner carrier, outer piston and oil hydraulic pump are integrated into linear hydraulic pump.Its complex structure, especially, the Synchronous motion control of outer piston is got up more difficult.
(5) publication number is the Chinese patent of CN 1261944A: free piston IC engine, and this patent is a kind of two opposed pistons free-piston engines with valve timing system.Need the replacing that the special valve train controlled realizes gas in the jar.
(6) publication number is the U. S. Patent of US005473893A: the free-piston engine with hydraulic unit, and this patent is the current hydraulic free-piston engine uniquely made model machine in the world and carry out demonstrating.This patent has 8 claims, possesses high low pressure hydraulic unit.This patent cannot prevent rotation during pistons work, does not also provide the method for measurement of piston displacement.There is the problem of starting difficulty equally.
Summary of the invention
The utility model object is for solving the deficiencies in the prior art, one is provided not need the intermediate transfer links such as crank torque output, replace the rigid mechanical transmission of gearbox and transmission shaft with the Flexible Transmission of high pressure oil, there is higher mechanical efficiency, start easily, continuous operation is reliably based on the power plant of internal-combustion engine and linear hydraulic pump.
The utility model is based on the power plant of internal-combustion engine and linear hydraulic pump, by eliminating the single cylinder two-stroke motor of valve distribution mechanism and forming containing Hydraulic Power Transmission System two-part of linear hydraulic pump, oil pump and oil hydraulic motor, described single cylinder two-stroke motor, comprising: body, the cylinder cap be connected on body, the piston be slidably matched with it in body chamber, the piston rod be connected on piston, the bent axle, the wheel tooth flying wheel be installed on crankshaft main journal that are hinged mutually by wrist pin and connecting rod and piston rod;
The hydraulic plunger upper end of described linear hydraulic pump is connected with the piston rod of described single cylinder two-stroke motor, and the lower end of the linear hydraulic pump pump housing is connected with described hydraulic motor lines by high pressure outlet valve; The bottom of the linear hydraulic pump pump housing is connected with described oily delivery side of pump pipeline by high pressure oil safety check, and the input end of oil pump connects a low pressure oil reservoir by pipeline; The upper end of the linear hydraulic pump pump housing is connected with described low-pressure oil storage case pipeline by low pressure scavenger valve; The pipeline connecting linear hydraulic pump and oil hydraulic motor is gone back and connects a high pressure accumulator.
Described bent axle is half bent axle only having a rod journal and a main journal.
The working mechanism of the utility model power plant is:
Moved down (expansion stroke) by catch fire in the firing chamber hydraulic plunger promoting piston and piston rod and linear hydraulic pump that expands of single cylinder two-stroke motor inflammable mixture, linear hydraulic pump is driven to export high pressure oil, high pressure oil is exported to oil hydraulic motor by high pressure outlet valve and drives oil hydraulic motor to rotate, the dynamic load of oil hydraulic motor band.Under the rotator inertia effect of gear flywheel, be with dynamic crankshaft to be rotated further, and by connecting rod, piston rod drive piston move (compression stroke), thus realize the to-and-fro motion of piston.
The beneficial effects of the utility model are:
A. two stroke diesel engine and linear hydraulic pump are combined into one, traditional combustion engine is changed into by oil hydraulic motor outputting power by bent axle outputting power, decrease the intermediate conversion links of Power output, make the thermal efficiency of the present utility model will improve about about 5% than traditional combustion engine.
B. structural rate traditional combustion engine of the present utility model and hydraulic free-piston engine are simpler, and being mainly reflected in hydraulic system has very large simplification, does not need the contour precision apparatus of hydraulic pressure FREQUENCY CONTROL valve.
C. start-up course of the present utility model is completely identical with traditional combustion engine, and can be dragged or hand starting by starting electrical machinery, be mechanically activated mode, starts reliable.
D. the movement parts return such as piston of the present utility model relies on the effect of inertia of gear Rotary Inertia of Flywheel, does not need hydraulic energy return, has avoided hydraulic system large discharge and high-frequency contradiction.
E. the utility model component reduce about 60% than traditional combustion engine, and structure is compacter, and cost is lower.
F. drive transmission shaft or direct drive of wheel to realize Direct wheel drives by oil hydraulic motor, thus be rigidly connected by traditional gearbox, transmission shaft etc. and change into flexible hydraulic and connect, substantially increase passing ability and the mobility of vehicle.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model power plant;
Fig. 2 is the side view of Fig. 1;
Fig. 3 is the working state schematic representation of model utility power plant;
Wherein: (a) is in top dead center position state for piston 3; B () is the descending process status of piston 3; C () opens relief opening 12, scavenging air belt 11 location status for piston 3 comes downwards to order; D () is for piston 3 is by uplink state under the rotatory inertia moment effect of gear flywheel 5.
Embodiment
The embodiment provided below in conjunction with accompanying drawing is described in further detail the utility model device.
With reference to Fig. 1,2, a kind of power plant based on internal-combustion engine and linear hydraulic pump, by eliminating the single cylinder two-stroke motor A of valve distribution mechanism and forming containing Hydraulic Power Transmission System B two-part of linear hydraulic pump 24, oil pump 19 and oil hydraulic motor 17, described single cylinder two-stroke motor A, comprising: body 2, the cylinder cap 13 be connected on body, the piston 3 be slidably matched with it in body chamber, the piston rod 14 be connected on piston 3, the bent axle 6, the gear flywheel 5 be installed on bent axle 6 main journal that are hinged with piston rod 14 phase by wrist pin 25 and connecting rod 4;
Hydraulic plunger 7 upper end of described linear hydraulic pump 24 is connected with the piston rod 14 of described single cylinder two-stroke motor, and the lower end of linear hydraulic pump 24 pump housing is connected with described oil hydraulic motor 17 pipeline by high pressure outlet valve 8; The bottom of linear hydraulic pump 24 pump housing is connected with the output terminal pipeline of described oil pump 19 by high pressure oil safety check 9, and the input end of oil pump 19 connects a low pressure oil reservoir 18 by pipeline; The upper end of the linear hydraulic pump pump housing 24 is connected with described low pressure oil reservoir 18 pipeline by low pressure scavenger valve 15; The pipeline connecting linear hydraulic pump 24 and oil hydraulic motor 17 is gone back and connects a high pressure accumulator 16.
Described bent axle 6 is 1/2 bent axle, namely only has half bent axle of a rod journal and a main journal.
In figure: 1 for being arranged on the oil sprayer on cylinder cap 13,10 for being arranged on the breather cheek valve of body 2 lower end, 11 for being arranged on the scavenging air belt in the middle part of single cylinder two-stroke motor body 2,12 for being arranged on the relief opening in the middle part of single cylinder two-stroke motor body 2,23 is the firing chamber that piston 3 upper end and body 2 inner chamber are formed, 22 is the gas storage chamber that piston 3 lower end and body 2 inner chamber are formed, 20 is the low pressure oil pocket that hydraulic plunger 7 upper end and linear hydraulic pump 24 inner chamber are formed, and 21 is the high-voltage oil cavity that hydraulic plunger 7 lower end and linear hydraulic pump 24 inner chamber are formed.
The working procedure of these power plant is as follows:
As shown in Fig. 3 (a), the piston 3 in internal-combustion engine A is in top dead center, is non-output kinetic energy state.
As shown in Fig. 3 (b), when the inflammable mixture sprayed by oil sprayer catches fire expansion in firing chamber 23, promote piston 3 and piston rod 14 and hydraulic plunger 7 to move down, high pressure oil in linear hydraulic pump 24 high-voltage oil cavity 21 is outwards exported by high pressure outlet valve 8, a part for high pressure oil directly goes to drive oil hydraulic motor 17, some input high pressure accumulator 16, now, high pressure oil safety check 9 is in closed condition.
As shown in Fig. 3 (c), when piston 3 continues descending, when order opens relief opening 12 scavenging air belt 11, exhaust gas inside cylinder is discharged, and live gas enters in cylinder.
As shown in Fig. 3 (d), up at the rotatory inertia moment effect lower piston 3 of gear flywheel 5, gas storage chamber 22 volume becomes large, and breather cheek valve 10 is opened, and live gas enters gas storage chamber 22; Hydraulic plunger 7 is up with piston 3, and high-voltage oil cavity volume 21 becomes large, and high pressure oil safety check 9 is opened, and low pressure oil enters high-voltage oil cavity 21, low pressure oil pocket 20 volume diminish by low pressure oil by low pressure scavenger valve 15 push get back to low pressure oil reservoir 18.
The function of external output torque do not born by bent axle in this device, mainly completes the kinology function of connecting rod; The top dead center position of engine piston 3 and the judgement of oil injection time complete by the position of tooth on gear flywheel 5, avoid the difficulty that free-piston engine judges piston top dead center.
The present embodiment is only for illustration of the utility model; wherein the structure, Placement etc. of each parts all can change to some extent; every equivalents of carrying out on the basis of technical solutions of the utility model and improvement, all should not get rid of outside protection domain of the present utility model.
Claims (2)
1. the power plant based on internal-combustion engine and linear hydraulic pump, by eliminating the single cylinder two-stroke motor (A) of valve distribution mechanism and containing linear hydraulic pump (24), Hydraulic Power Transmission System (B) two-part composition of oil pump (19) and oil hydraulic motor (17), described single cylinder two-stroke motor (A), comprise: body (2), be connected in the cylinder cap (13) on body, the piston (3) be slidably matched with it in body chamber, be connected in the piston rod (14) on piston (3), by the bent axle (6) that wrist pin (25) is hinged mutually with connecting rod (4) and piston rod (14), be installed in the gear flywheel (5) on bent axle (6) main journal, it is characterized in that:
Hydraulic plunger (7) upper end of described linear hydraulic pump (24) is connected with the piston rod (14) of described single cylinder two-stroke motor, and the lower end of linear hydraulic pump (24) pump housing is connected with described oil hydraulic motor (17) pipeline by high pressure outlet valve (8); The bottom of linear hydraulic pump (24) pump housing is connected with the output terminal pipeline of described oil pump (19) by high pressure oil safety check (9), and the input end of oil pump (19) connects a low pressure oil reservoir (18) by pipeline; The upper end of the linear hydraulic pump pump housing (24) is connected with described low-pressure oil storage case (18) pipeline by low pressure scavenger valve (15); The pipeline connecting linear hydraulic pump (24) and oil hydraulic motor (17) is gone back and connects a high pressure accumulator (16).
2. the power plant based on internal-combustion engine and linear hydraulic pump according to claim 1, it is characterized in that, described bent axle (6) is for only having half bent axle of a rod journal and a main journal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520197231.6U CN204532534U (en) | 2015-04-02 | 2015-04-02 | Based on the power plant of internal-combustion engine and linear hydraulic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520197231.6U CN204532534U (en) | 2015-04-02 | 2015-04-02 | Based on the power plant of internal-combustion engine and linear hydraulic pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204532534U true CN204532534U (en) | 2015-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520197231.6U Expired - Fee Related CN204532534U (en) | 2015-04-02 | 2015-04-02 | Based on the power plant of internal-combustion engine and linear hydraulic pump |
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| Country | Link |
|---|---|
| CN (1) | CN204532534U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104775901A (en) * | 2015-04-02 | 2015-07-15 | 吉林大学 | Power device based on internal combustion engine and linear hydraulic pump |
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2015
- 2015-04-02 CN CN201520197231.6U patent/CN204532534U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104775901A (en) * | 2015-04-02 | 2015-07-15 | 吉林大学 | Power device based on internal combustion engine and linear hydraulic pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150805 Termination date: 20170402 |