CN102086789A - Hydraulic air distribution mechanism of internal combustion engine - Google Patents
Hydraulic air distribution mechanism of internal combustion engine Download PDFInfo
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- CN102086789A CN102086789A CN2009102183311A CN200910218331A CN102086789A CN 102086789 A CN102086789 A CN 102086789A CN 2009102183311 A CN2009102183311 A CN 2009102183311A CN 200910218331 A CN200910218331 A CN 200910218331A CN 102086789 A CN102086789 A CN 102086789A
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Abstract
The invention discloses a hydraulic air distribution mechanism of an internal combustion engine. The mechanism is arranged outside a cylinder body of the internal combustion engine and consists of a cam driving device, an air valve driving device, a hydraulic device and a pressure retaining oil supply device, wherein the cam driving device consists of a pump shell, a timing input shaft, an advance unit and a camshaft; the air valve driving device consists of an actuating oil cylinder and an air valve push rod; the hydraulic device is arranged and connected between the cam driving device and the air valve driving device and consists of a driving oil cylinder, a return spring, a pour plug and a connecting pipe; and the pressure retaining oil supply device consists of a filter, a pressure regulating valve, a one-way valve and a low-pressure cavity. By the mechanism, the problems of complex structural design, a large number of transmission parts, large occupied space volume and complex machining and manufacturing of the air distribution mechanism of the internal combustion engine in the prior art can be solved.
Description
Technical field
The invention belongs to technical field of internal combustion engines, relate to a kind of internal-combustion engine hydraulic pressure distribution device.
Background technique
The distribution device of internal-combustion engine is mainly used in air inlet and the exhaust situation in the control cylinder, in prior art, distribution device adopts machinery type directly to control intake valve and exhaust valve on off state, its working procedure is: the piston in the cylinder of internal-combustion engine drives bent axle by connecting rod, bent axle drives the rotation of timing input shaft by the timing transmission device, timing input shaft one end is equipped with advancing device, the advancing device drive cam shaft is rotated, cam is installed on the camshaft, drive intake valve and exhaust valve respectively by drive unit when camshaft rotates, control is advanced, the switching time of exhaust valve.Because in this control technique, drive unit adopts mechanical parts to connect, the shortcoming that on cylinder block, has the link position difficult arrangement of mechanical parts, it is complicated that its structure designs on cylinder body and cylinder cap, and the valve position is arranged limited, and the transmission component that the need volume that takes up room is bigger, operation is many and complicated during manufacturing, cause the internal-combustion engine volume to increase, weight increases, and manufacture cost increases.
Summary of the invention
For solving big, the manufacturing complicated problems of I. C engine distribution mechanism complex structural designs, drive gadget occupation space volume in the prior art, the invention provides a kind of internal-combustion engine hydraulic pressure distribution device, this mechanism is installed in the cylinder block outside of internal-combustion engine, partly is made up of cam driving gear, valve actuator, hydraulic pressure installation and four of pressurize oil supplying devices.
Cam driving gear, form by pump case, timing input shaft, advancing device, camshaft, timing input shaft and camshaft are installed in respectively on the pump case of cylinder block outside of internal-combustion engine, the position of pump case can be determined according to the installing space of cylinder block outside, advancing device is installed between timing input shaft and the camshaft, cam is installed on the camshaft, and cam is divided into intake cam and exhaust cam;
Valve actuator is formed by carrying out oil cylinder and valve actuating push rod, carry out the oil cylinder design with the corresponding cylinder head in valve position on, valve actuating push rod is installed in the execution oil cylinder;
Hydraulic pressure installation is installed between cam driving gear and the valve actuator, form by driving oil cylinder, return spring, notes plug and connecting tube, the driving oil cylinder design is on the pump case of cam driving gear, return spring is installed in the oil cylinder and is annotated plug, annotating plug withstands on the cam, connecting tube is installed on the driving oil cylinder, the connecting tube the other end is connected to be carried out on the oil cylinder, driving oil cylinder, execution oil cylinder and connecting tube inside, form the working oil flowing space of a sealing, buffer is installed on connecting tube, and connecting tube is divided into exhaust connection and inlet pipe connection;
Pressurize fuel feeding part is by filter, pressure regulator valve, one-way valve and low-pressure cavity are formed, the lubrication oil supply system or the lubricant oil of termination internal-combustion engine are specialized in oil pump before the filter, be connected to pressure regulator valve on the oil pipe of filter rear end, one-way valve and low-pressure cavity, low-pressure cavity connects the exhaust connection of carrying out on the oil cylinder by one-way valve with oil pipe, connect the inlet pipe connection of carrying out on the oil cylinder with oil pipe by one-way valve, working oil is provided by the internal combustion (IC) engine lubricating oil oil supply system, its flow direction is that filter flows into, through pressure regulator valve, one-way valve enters low-pressure cavity, flow to connecting tube from low-pressure cavity through one-way valve, oil pressure gauge and accumulator are installed on the low-pressure cavity;
The working condition of this mechanism is: internal-combustion engine is when work, bent axle drives the rotation of timing input shaft by the timing transmission device, and the timing input shaft drives advancing device and rotates, and the advancing device drive cam shaft is rotated, cam rotation on the camshaft promotes the notes plug motion in the driving oil cylinder; In the inner seal operation environment that forms of driving oil cylinder, execution oil cylinder and the connecting tube between them, be marked with working oil, when annotating the plug motion, working oil in this sealed environment is subjected to annotate plug and drives, between driving oil cylinder and execution oil cylinder, flow, the working oil of carrying out in the oil cylinder clocklike increases and reduces, and promotes valve actuating push rod and clocklike moves, and valve actuating push rod control valve is open and close clocklike; Return spring is installed in the driving oil cylinder, and when cam turned over maximum, oil pressure that the working oil that flows in the load that is subjected on the valve execution oil cylinder, the low-pressure cavity produces and return spring three promoted jointly to annotate and get back into the position.
For making this device on the internal-combustion engine that uses gasoline, better using effect and function be arranged, can be on the inlet pipe connection between cam driving gear and the valve actuator design and installation oil circuit control gear, the oil circuit control gear is by centrifugal speed governor, flow control valve, controlling rod and hyperbaric chamber are formed, centrifugal speed governor is installed in the other end of camshaft, centrifugal speed governor one end withstands on the spool of flow control valve, the flow control spool the other end is connected with controlling rod by the thrust-balancing spring, the throttle of the external internal-combustion engine of controlling rod, oil pipe is installed on the flow control valve, oil pipe is connected with hyperbaric chamber, and hyperbaric chamber is connected on the inlet pipe connection with oil pipe by one-way valve.
When gasoline engine in when work, the size of air inflow can change according to the needs of internal combustion engine in the cylinder.In this mechanism, the size of air inflow in the cylinder, be to determine by size and time that intake valve is opened, size that intake valve is opened and time are carried out the oil mass decision of working oil in the oil cylinder by air inlet, working oil for a long time, the working stroke of valve actuating push rod is big, the amplitude that valve is opened is big, the time is long, otherwise working oil reduces then that the amplitude of opening of valve reduces, the time is short.The oil circuit control gear of design on the inlet pipe connection of driving oil cylinder and execution oil cylinder, purpose is exactly to solve the problem that oil mass increases and reduces in the inlet pipe connection.In this mechanism, oil mass in the inlet pipe connection is provided by low-pressure cavity, by hyperbaric chamber control output, when the internal-combustion engine operation of opening the throttle, when promptly needing to increase cylinder intake air quantity, available external force promotes the controlling rod in the oil circuit control gear, controlling rod promotes the flow control spool reach through the thrust-balancing spring, and at this moment, the flow control valve opening reduces, the hyperbaric chamber internal pressure raises, working oil to exhaust chamber forms obstruction, and the flow that flows out the working oil of connecting tube reduces, thereby more work oil flows in the execution oil cylinder of air inlet, the stroke of oil cylinder is increased, and the opening of intake valve increases, opening time increases; When internal-combustion engine reduces throttle operation, when promptly needing to reduce the air inflow of cylinder, reduce the external force on the controlling rod, the controlling rod retraction, the flow control valve opening increases, and the hyperbaric chamber internal pressure reduces, the flow that flows out the working oil of connecting tube this moment increases, the working oil oil mass that air inlet is carried out in the oil cylinder reduces, and the stroke of carrying out oil cylinder reduces, and the time that the opening of intake valve reduces, opens shortens.Through above control, the purpose that reaches is the output power of control gasoline engine.
External force on putting on the gasoline engine throttle is fixedly the time, be subjected to the influence of the peripheral load of gasoline engine, when the gasoline engine rotating speed raises, be installed in the centrifugal speed governor high speed rotating of camshaft one end, flow control spool is bestowed outside thrust, when this thrust during greater than the external force that is added on the controlling rod, flow control spool retreats, the thrust-balancing length of spring compressed, the flow control valve opening increases, and the working oil flow of backflow increases, and the hyperbaric chamber internal pressure reduces, at this moment the working oil of carrying out on the inlet pipe connection in the oil cylinder reduces, the stroke of oil cylinder reduces, and the opening of intake valve reduces, time shortens, and the air inflow of internal-combustion engine reduces automatically, promote corresponding the reducing of power that bent axle rotates, the corresponding decline of the rotating speed of internal-combustion engine; Otherwise when the gasoline engine rotating speed reduced, the thrust-balancing spring promoted flow control spool and retreats, and the flow control valve opening is reduced, and made that the opening of intake valve increases thereupon, opened the time growth, impelled internal-combustion engine rotational speed to increase.So just can realize the permanent rotating speed output of the gasoline engine purpose of control automatically.
In addition, speed governing emptying and a small amount of seepage can appear in the working oil in driving oil cylinder, execution oil cylinder and the connecting tube in real work, and pressurize fuel feeding part can play the effect of dynamically additional working oil with certain pressure fuel feeding in connecting tube.
On each connecting tube, buffer can be installed, the shock and vibration that occur in the oil circuit when buffer can absorb work.Accumulator is installed on low-pressure cavity, and accumulator is in order to the vibration in supply of balance oil mass and the absorption pressurize oil supplying device oil circuit.Setting pressure table on low-pressure cavity is used to monitor the oil pressure in the low-pressure cavity.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention one.
Fig. 2 is the structural representation of the embodiment of the invention two.
Embodiment
Embodiment one: as shown in Figure 1, internal-combustion engine hydraulic pressure distribution device is installed in the cylinder block outside of internal-combustion engine, partly is made up of cam driving gear, valve actuator, hydraulic pressure installation and four of pressurize oil supplying devices;
Cam driving gear is made up of timing input shaft 1, advancing device 3 and camshaft 4, advancing device 3 is installed between timing input shaft 1 and the camshaft 4, on the camshaft 4 cam is installed, cam is divided into intake cam 7 and exhaust cam 6, and timing input shaft 1 in the cam driving gear and camshaft 4 are installed in respectively on the outer pump case 2 of cylinder of internal-combustion engine cylinder body;
Valve actuator is formed by carrying out oil cylinder 35 and valve actuating push rod 36, carry out oil cylinder 35 designs with the corresponding cylinder head 34 in valve 37 positions on, valve actuating push rod 36 is installed in the execution oil cylinder 35;
Hydraulic pressure installation is installed between cam driving gear and the valve actuator, by driving oil cylinder 15, annotate plug 14, return spring 16 and connecting tube are formed, connecting tube is divided into exhaust connection 33 and inlet pipe connection 32, on the pump case 2 of driving oil cylinder 15 designs outside the cylinder of internal-combustion engine cylinder body, return spring 16 and notes plug 14 are installed in the driving oil cylinder 15, annotating plug 14 withstands on intake cam 7 and the exhaust cam 6, exhaust connection 33 and inlet pipe connection 32 are installed in driving oil cylinder 15 and carry out between the oil cylinder 35, driving oil cylinder 15, carry out the inner asphalt channel that forms a sealing of oil cylinder 35 and connecting tube thereof, interior dress working oil is equipped with buffer 26 on exhaust connection 33 and inlet pipe connection 32;
Pressurize fuel feeding part is made up of filter 31, pressure regulator valve 30, one-way valve 29 and low-pressure cavity 23, the lubrication oil supply system of termination internal-combustion engine before the filter 31, be connected to pressure regulator valve 30, one-way valve 29 and low-pressure cavity 23 on the oil pipe of filter 31 rear ends, low-pressure cavity 23 connects capable exhaust connection 33 of holding on the oil cylinder 35 by one- way valve 17,22 usefulness oil pipes, connect the inlet pipe connection of carrying out on the oil cylinder 35 32 by one- way valve 18,24 usefulness oil pipes, oil pressure gauge 28 and accumulator 27 are installed on the low-pressure cavity 23.
Embodiment two: as shown in Figure 2, internal-combustion engine hydraulic pressure distribution device is installed in the cylinder block outside of internal-combustion engine, partly is made up of cam driving gear, valve actuator, hydraulic pressure installation, pressurize oil supplying device and five of oil circuit control gear;
Cam driving gear is made up of timing input shaft 1, advancing device 3 and camshaft 4, advancing device 3 is installed between timing input shaft 1 and the camshaft 4, on the camshaft 4 cam is installed, cam is divided into intake cam 7 and exhaust cam 6, and timing input shaft 1 in the cam driving gear and camshaft 4 are installed in respectively on the outer pump case 2 of cylinder of internal-combustion engine cylinder body;
Valve actuator is formed by carrying out oil cylinder 35 and valve actuating push rod 36, carry out oil cylinder 35 designs with the corresponding cylinder head 34 in valve 37 positions on, valve actuating push rod 36 is installed in the execution oil cylinder 35;
Hydraulic pressure installation is installed between cam driving gear and the valve actuator, by driving oil cylinder 15, annotate plug 14, return spring 16 and connecting tube are formed, connecting tube is divided into exhaust connection 33 and inlet pipe connection 32, on the pump case 2 of driving oil cylinder 15 designs outside the cylinder of internal-combustion engine cylinder body, return spring 16 and notes plug 14 are installed in the driving oil cylinder 15, annotating plug 14 withstands on intake cam 7 and the exhaust cam 6, exhaust connection 33 and inlet pipe connection 32 are installed in driving oil cylinder 15 and carry out between the oil cylinder 35, driving oil cylinder 15, carry out the inner asphalt channel that forms a sealing of oil cylinder 35 and connecting tube thereof, interior dress working oil is equipped with buffer 26 on exhaust connection 33 and inlet pipe connection 32;
Pressurize fuel feeding part is made up of filter 31, pressure regulator valve 30, one-way valve 29 and low-pressure cavity 23, the lubrication oil supply system of termination internal-combustion engine before the filter 31, be connected to pressure regulator valve 30, one-way valve 29 and low-pressure cavity 23 on the oil pipe of filter 31 rear ends, low-pressure cavity 23 connects the exhaust connection of carrying out on the oil cylinder 35 33 by one- way valve 17,22 usefulness oil pipes, connect the inlet pipe connection of carrying out on the oil cylinder 35 32 by one- way valve 18,24 usefulness oil pipes, oil pressure gauge 28 and accumulator 27 are installed on the low-pressure cavity 23;
On the inlet pipe connection between cam driving gear and the valve actuator 32, design and installation oil circuit control gear, this device is by centrifugal speed governor 8, flow control valve 9, thrust-balancing spring 12, controlling rod 10 and hyperbaric chamber 20 are formed, centrifugal speed governor 8 is installed in the other end of camshaft 4, centrifugal speed governor 8 one ends withstand on spool 11 1 ends of flow control valve 9, flow control valve core 11 the other ends are connected with controlling rod 10 by thrust-balancing spring 12, the throttle of controlling rod 10 external internal-combustion engines, oil pipe 13 is installed on the flow control valve 9, oil pipe 13 connects hyperbaric chamber 20, and hyperbaric chamber 20 is by one- way valve 19,25 usefulness oil pipes are connected on the inlet pipe connection 32.
Claims (6)
1. internal-combustion engine hydraulic pressure distribution device, has a cam driving gear, cam driving gear is made up of timing input shaft (1), advancing device (3) and camshaft (4), advancing device (3) is installed between timing input shaft (1) and the camshaft (4), camshaft is equipped with cam on (4), it is characterized in that: this mechanism is installed in the cylinder block outside of internal-combustion engine, also has valve actuator, hydraulic pressure installation and three parts of pressurize oil supplying device in the mechanism.
2. internal-combustion engine hydraulic pressure distribution device as claimed in claim 1, it is characterized in that: timing input shaft (1) in the cam driving gear and camshaft (4) are installed in respectively on the outer pump case (2) of cylinder of internal-combustion engine cylinder body, and camshaft (4) is gone up the cam of installing and is divided into intake cam (7) and exhaust cam (6).
3. internal-combustion engine hydraulic pressure distribution device as claimed in claim 2, it is characterized in that: valve actuator is formed by carrying out oil cylinder (35) and valve actuating push rod (36), carry out oil cylinder (35) design with the corresponding cylinder head in valve (37) position (34) on, valve actuating push rod (36) is installed in to be carried out in the oil cylinder (35).
4. internal-combustion engine hydraulic pressure distribution device as claimed in claim 3, it is characterized in that: hydraulic pressure installation is installed between cam driving gear and the valve actuator, by driving oil cylinder (15), annotate plug (14), return spring (16) and connecting tube are formed, connecting tube is divided into exhaust connection (33) and inlet pipe connection (32), on the pump case (2) of driving oil cylinder (15) design outside the cylinder of internal-combustion engine cylinder body, return spring (16) and notes plugs (14) are installed in the driving oil cylinder (15), annotating plug (14) withstands on intake cam (7) and the exhaust cam (6), connecting tube is installed in driving oil cylinder (15) and carries out between the oil cylinder (35), driving oil cylinder (15), carry out the inner asphalt channel that forms a sealing of oil cylinder (35) and connecting tube thereof, interior dress working oil is equipped with buffer (26) on exhaust connection (33) and inlet pipe connection (32).
5. internal-combustion engine hydraulic pressure distribution device as claimed in claim 4, it is characterized in that: pressurize fuel feeding part is by filter (31), pressure regulator valve (30), one-way valve (29) and low-pressure cavity (23) are formed, the lubrication oil supply system or the lubricant oil of the preceding termination internal-combustion engine of filter (31) are specialized in oil pump, be connected to pressure regulator valve (30) on the oil pipe of filter (31) rear end, one-way valve (29) and low-pressure cavity (23), low-pressure cavity (23) is by one-way valve (17), (22) connect the exhaust connection of carrying out on the oil cylinder (35) (33) with oil pipe, by one-way valve (18), (24) connect the inlet pipe connection of carrying out on the oil cylinder (35) (32) with oil pipe, oil pressure gauge (28) and accumulator (27) are installed on the low-pressure cavity (23).
6. internal-combustion engine hydraulic pressure distribution device as claimed in claim 5, it is characterized in that: the inlet pipe connection between cam driving gear and valve actuator (32) is gone up design and installation oil circuit control gear, the oil circuit control gear is by centrifugal speed governor (8), flow control valve (9), thrust-balancing spring (12), controlling rod (10) and hyperbaric chamber (20) are formed, centrifugal speed governor (8) is installed in the other end of camshaft (4), centrifugal speed governor (8) one ends withstand on spool (11) one ends of flow control valve (9), flow control valve core (11) the other end is connected with controlling rod (10) by thrust-balancing spring (12), the throttle of the external internal-combustion engine of controlling rod (10), oil pipe (13) is installed on the flow control valve (9), oil pipe (13) connects hyperbaric chamber (20), and hyperbaric chamber (20) is by one-way valve (19), (25) be connected on the inlet pipe connection (32) with oil pipe.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102183311A CN102086789A (en) | 2009-12-07 | 2009-12-07 | Hydraulic air distribution mechanism of internal combustion engine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009102183311A CN102086789A (en) | 2009-12-07 | 2009-12-07 | Hydraulic air distribution mechanism of internal combustion engine |
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| CN102086789A true CN102086789A (en) | 2011-06-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277158A (en) * | 2013-05-31 | 2013-09-04 | 中国人民解放军理工大学 | Hydraulically flexibly driven valve mechanism |
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- 2009-12-07 CN CN2009102183311A patent/CN102086789A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277158A (en) * | 2013-05-31 | 2013-09-04 | 中国人民解放军理工大学 | Hydraulically flexibly driven valve mechanism |
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Application publication date: 20110608 |