CN106357177A - Stepping motor controller - Google Patents
Stepping motor controller Download PDFInfo
- Publication number
- CN106357177A CN106357177A CN201610975311.9A CN201610975311A CN106357177A CN 106357177 A CN106357177 A CN 106357177A CN 201610975311 A CN201610975311 A CN 201610975311A CN 106357177 A CN106357177 A CN 106357177A
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- Prior art keywords
- voltage
- motor
- signal
- controllor
- input
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- 230000006835 compression Effects 0.000 claims abstract description 30
- 238000007906 compression Methods 0.000 claims abstract description 30
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 18
- 229910002804 graphite Inorganic materials 0.000 claims description 18
- 239000010439 graphite Substances 0.000 claims description 18
- 230000002085 persistent effect Effects 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 239000003550 marker Substances 0.000 claims 1
- 239000004575 stone Substances 0.000 claims 1
- 239000003381 stabilizer Substances 0.000 abstract 4
- 239000013256 coordination polymer Substances 0.000 abstract 1
- 230000001276 controlling effect Effects 0.000 description 7
- 230000006870 function Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P8/00—Arrangements for controlling dynamo-electric motors rotating step by step
- H02P8/14—Arrangements for controlling speed or speed and torque
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K37/00—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors
- H02K37/24—Structural association with auxiliary mechanical devices
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Stepping Motors (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The invention discloses a stepping motor controller (20) which comprises a voltage stabilizer (23), a voltage stabilizer (24), a fixed-frequency pulse generator (25), an AND gate (26), a voltage comparator (27) and a voltage comparator (28), wherein the voltage stabilizer (23) and the voltage stabilizer (24) are used for modulating an input voltage signal ux (19) and supplying power to a controller, a driver and a stepping motor; the fixed-frequency pulse generator (25) is used for generating a fixed-frequency square-wave pulse signal CP0; the AND gate (26) accesses the CP0 and the input voltage signal ux (19) and is used for outputting a pulse signal CP; the voltage comparator (27) and the voltage comparator (28) are used for identifying the voltage magnitude of the input voltage signal ux (19); an output end is connected with the driver (21); when a high-voltage direct current voltage signal UH is inputted, the stepping motor rotates forward and the lift range of a piston is increased, and therefore the compression ratio of an engine can be increased; when a low-voltage direct current voltage signal UL is inputted, the stepping motor rotates reversely and the lift range of the piston is reduced, and therefore the compression ratio of the engine can be reduced; when a 0V voltage signal is inputted, the stepping motor does not work and the compression ratio of the engine is unchanged.
Description
Technical field
The present invention relates to a kind of controllor for step-by-step motor, in particular for the motor control of variable lift compression ratio piston
Device processed.
Background technology
Variable compression ratio engine is exactly to pass through control device, changes in real time the compression ratio of electromotor so that electromotor
In the case of middle-low load, to improve the thermal efficiency and the fuel economy of electromotor using high compression ratio；Feelings in high load capacity
Prevent the generation of pinking using low compression ratio under condition.One way in which is the lift by regulating piston, to change and to start
The compression ratio of machine.This variable lift compression ratio piston changes lift by motor, when motor rotates forward, piston lift
Increase, engine compression ratio increases, during motor reversion, piston lift reduces, and engine compression ratio reduces, and motor is not
During work, engine compression ratio is constant, and the control mode of this variable lift compression ratio piston is currently in space state.Step
The control of stepper motor has generally required power line, holding wire, three circuits of ground wire, and piston is in engine interior, worked
The round linear motion of Cheng Zhongzuo high speed, being driven the motor of piston to be in internal piston, being moved, if adopted together with piston
With common line connection, lead at least needs three circuits, and one end is fixed, an end motion, poor reliability, and how
Arrangement is a very big problem.
Content of the invention
The technical problem to be solved is to invent a kind of controllor for step-by-step motor, for controlling variable lift to compress
Ratio pistons work, thus reach the purpose adjusting engine compression ratio.This controllor for step-by-step motor simplifies supply line, control
Mode processed is simple, is capable of the continuous variable of engine compression ratio.
For solving above-mentioned technical problem, the present invention adopts the following technical scheme that realization:
The controllor for step-by-step motor of the present invention include two manostat, fixed pulse generator, one with door, two
Voltage comparator it is characterised in that:
Described controllor for step-by-step motor is encapsulated in one together with driver and motor (motor stator, rotor)
Rise, be arranged on internal piston；
The input voltage signal u of described controllor for step-by-step motorxA graphite by arrangement on bent axle, connecting rod and piston
Supply line introduces, and the negative pole of circuit is connected on the metal body of electromotor；
The input termination input voltage signal u of two described manostatx, the outfan of one of manostat is linked into
The circuit of voltage comparator end of oppisite phase and power supply for step-by-step motor interface, the output of another manostat terminates to controller and driving
On the power interface of device chip；
The described input with door meets outfan and the input voltage signal u of fixed rate pulse generator respectivelyx, defeated
Go out the pulse signal interface of terminator actuator；
The homophase termination input voltage signal u of two described voltage comparatorsx, the output of one of voltage comparator
The course changing control interface of terminator actuator, the enable interface of the output terminator actuator of another voltage comparator.
Controllor for step-by-step motor is it is characterised in that described input voltage signal uxBy ecu control, have three kinds of states:
High-voltage dc voltage uh, low-voltage dc voltage ul, 0v, uhVoltage range be 12-15v, ulVoltage range be 6-10v.
Controllor for step-by-step motor is it is characterised in that the output voltage us of described one of manostat is two voltages
The end of oppisite phase of comparator provides supply voltage, powers for motor simultaneously, and the output voltage vcc of another one manostat is control
Device chip processed and driver chip are powered.
Controllor for step-by-step motor is it is characterised in that the pulse frequency of described fixed rate pulse generator output and step
Stepper motor driver demand matches.
Controllor for step-by-step motor is it is characterised in that the described input voltage signal u accessing with doorxFor high voltage direct current
Pressure uhOr low-voltage dc voltage ulWhen, outfan output pulse signal controlling angle displacement and the rotary speed of motor,
As input voltage signal uxDuring for 0v, with door not output pulse signal.
Controllor for step-by-step motor is it is characterised in that the described voltage comparator end of oppisite phase controlling motor to turn to
Voltage is less than uh, higher than ul；The voltage of another voltage comparator end of oppisite phase is less than ul, higher than 0v.
Controllor for step-by-step motor is it is characterised in that described controllor for step-by-step motor passes through input signal uxThe height of voltage
The compression ratio to adjust electromotor for the low length with the persistent period, as input voltage signal uxFor high-voltage dc voltage uhWhen, two
Voltage comparator exports high level simultaneously, with door output pulse signal cp, motor rotating forward, so that the lift of piston is increased, enters
One step passes through input voltage signal uxThe length of persistent period controlling the size of piston lift increase amount, thus precisely increasing
The compression ratio of electromotor；As input voltage signal uxFor low-voltage dc voltage ulWhen, control the voltage comparator that motor turns to
Output low level, another voltage comparator exports high level, and with door output pulse signal cp, motor inverts, and makes piston
Lift reduces, and passes through input voltage signal u furtherxThe length of persistent period controlling the size of piston lift reduction amount, from
And accurately reduce the compression ratio of electromotor；As input voltage signal uxDuring for 0v, motor does not work, the compression of electromotor
Than constant.
Compared with prior art the invention has the beneficial effects as follows:
1. controllor for step-by-step motor of the present invention is packaged together together with driver and motor, is arranged on piston
Inside, the power line of motor and holding wire are integrated and circuit negative pole is connected on engine metal body, therefore simplify
Supply line is it is only necessary to arrange graphite supply line on bent axle, connecting rod and piston.
2. the control mode that controllor for step-by-step motor of the present invention is formed is relatively simple, on the one hand using input electricity
Pressure signal solves powerup issue, on the other hand realizes electromotor by the height of applied signal voltage and the length of persistent period
The continuous variable of compression ratio.
Brief description
The present invention is further illustrated below in conjunction with the accompanying drawings:
Fig. 1 is the crankshaft-link rod piston overall schematic involved by controllor for step-by-step motor of the present invention；
Fig. 2 is the enlarged drawing at Fig. 1 e；
Fig. 3 is the enlarged drawing at Fig. 1 f；
Fig. 4 is the full sectional view on the piston front view involved by controllor for step-by-step motor of the present invention；
Fig. 5 is the overall flow figure of the control mode that controllor for step-by-step motor of the present invention is constituted；
Fig. 6 is the schematic diagram of controllor for step-by-step motor internal circuit of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is explained in detail:
Refering to Fig. 1, bent axle involved by controllor for step-by-step motor of the present invention, connecting rod and piston mechanism include bent axle
1st, ring-shaped graphite groove 2, bent axle graphite arrangement circuit 3, brush 4, brush 5, connecting rod 6, connecting rod graphite are arranged circuit 7, brush 8, are lived
Plug internal graphite arrangement circuit 9, motor cabinet 10, internal piston wire 11, motor (motor stator 12, rotor 14),
Piston 13, cock body bottom 15, guide plate 16, inner sleeve 17, cock body top 18.
Refering to Fig. 1, the supply line of controllor for step-by-step motor of the present invention is by bent axle, connecting rod and piston
Grooving arranges what a graphite line road completed, is insulation between graphite circuit and bent axle, connecting rod and piston.
Refering to Fig. 1, Fig. 2, Fig. 3 and Fig. 5, the supply line one involved by controllor for step-by-step motor of the present invention has
Brush is used at three.Brush 4 is fixed on and is in close contact with crankshaft front end ring-shaped graphite groove 2 on crankcase machine body, and brush 5 is fixed on
On bent axle, the graphite circuit with big end is in close contact, and brush 8 is fixed on cock body bottom 15 with the graphite on small end of connecting rod
Circuit is in close contact.Input voltage signal ux19 access brush 4 by wire, arrange circuit by ring-shaped graphite groove 2, bent axle graphite
3rd, brush 5, connecting rod graphite arrangement circuit 7, brush 8, internal piston graphite arrangement circuit 9, internal piston wire 11 are linked into this
On the described controllor for step-by-step motor of invention, by the use of engine metal body as the negative pole of circuit.
Refering to Fig. 1 and Fig. 4, motor cabinet 10 is disc-like structural member, and the bottom surface of motor cabinet 10 is evenly distributed (casting) to be had
One to eight structure identical truncated cone-shaped boss, corresponding knot on one to eight structure identical truncated cone-shaped boss and piston body bottom 15
Structure identical truncated cone-shaped pit phase is equipped with (aligning), because the structure identical truncated cone-shaped pit on piston body bottom 15 limits
Rotation in motor cabinet 10 horizontal plane, one to eight structure identical round platform of the bottom surface of motor cabinet 10 and piston body bottom 15 setting
The annulus bottom surface contact of shape pit connects, and limits the downward play of motor cabinet 10；The top end face of motor cabinet 10 and the bottom of inner sleeve 17
Face contact connect thus limit motor cabinet 10 play upwards, thus motor cabinet 10 is fixed on piston body bottom 15.
Refering to Fig. 1 and Fig. 4, the center of the top end face of motor cabinet 10 is provided with the annulus for installing motor stator 12
Body, the rotation conllinear of torus, the circumference that one to eight structure identical truncated cone-shaped boss is distributed and motor cabinet 10；Motor
Stator 12 is arranged in annulus body as being fixedly connected the electricity it is impossible in planar movement, the bottom face of motor stator 12 and annulus body
Support 10 contact connects, make motor stator 12 can not play downwards, in the centre bore of rotor 14 loading motor stator 12, interior
Set 17 is sleeved on rotor 14 with motor stator 12 around, and the splined hole in inner sleeve 17 and rotor 14 1 (top)
The splined shaft at end is equipped with, and the inner bottom surface of inner sleeve 17 centre bore contacts connection, rotor with the shaft shoulder top end face of rotor 14
The bottom surface of 14 shaft shoulder contacts connection with the top end face of motor stator 12, prevents rotor 14 from altering upwards with motor stator 12
Dynamic, so that motor is fixed on motor cabinet 10.
Refering to Fig. 1 and Fig. 4,16 one-tenth of the guide plate that piston body top 18 is passed through on piston body bottom 15 is slidably connected, thus
Piston body top 18 is constrained in moving up and down along piston axis direction.
Refering to Fig. 1 and Fig. 4, the center at inner sleeve 17 top is provided with splined hole, inner sleeve 17 outer wall is provided with external screw thread,
Screw thread be shaped as triangle or trapezoidal, the external screw thread on inner sleeve 17 outer wall is matched with the female thread on piston body top 18.
Refering to Fig. 1 and Fig. 5, motor is p-m step motor or composite stepper motor, and enables rotating, motor
Controller 20, driver 21 be packaged together together with motor (motor stator 12, rotor 14), be arranged in inner sleeve 17
Portion.
Refering to Fig. 5, the input voltage signal u of controllor for step-by-step motor of the present inventionx19, by ecu control, have three
The state of kind: high-voltage dc voltage uh, low-voltage dc voltage ulAnd 0v, uhVoltage range be 12-15v, ulVoltage range be 6-
10v.
Refering to Fig. 6, controllor for step-by-step motor of the present invention includes manostat 23, manostat 24, fixed frequency pulse
Generator 25 and door 26, voltage comparator 27, voltage comparator 28.
Refering to Fig. 5 and Fig. 6, controllor for step-by-step motor of the present invention passes through manostat 23 and manostat 24 will input electricity
Pressure signal ux19 are sequentially modulated as us and vcc.Us is that voltage comparator 27, the end of oppisite phase of voltage comparator 28 and motor carry
Power supply source voltage, vcc is controller chip and driver chip provides supply voltage.
Refering to Fig. 5 and Fig. 6, controllor for step-by-step motor of the present invention generates one by fixed rate pulse generator 25
Individual fixed frequency pulse signal cp0, cp0With input voltage signal ux19 access and door 26, with door 26 output pulse signal cp, connect
To on the pulse signal interface of driver 21.
Refering to Fig. 5, Fig. 6, the anti-phase termination of the voltage comparator 27 that controllor for step-by-step motor of the present invention is adopted
The voltage entering is higher than ul, less than uh, homophase termination input voltage signal ux19, the voltage of the end of oppisite phase access of voltage comparator 28
Less than ul, higher than 0v, homophase terminates input voltage signal ux19.The steering of the outfan dir driver connected 21 of voltage comparator 27
Control interface, the enable interface of the outfan en driver connected 21 of voltage comparator 28.
Refering to Fig. 1, Fig. 5 and Fig. 6, the driver 21 that controllor for step-by-step motor of the present invention is connect is according to controller 20
Output signal drive stepping motor work.When voltage comparator 27 output high level when, motor rotate forward, when voltage ratio relatively
During device 27 output low level, motor inverts；When voltage comparator 28 output high level, motor starts, and works as voltage
During comparator 28 output low level, motor off line, the angle displacement of motor and rotary speed are controlled by pulse signal cp
System.
The operation principle of controllor for step-by-step motor:
Refering to Fig. 1, Fig. 5 and Fig. 6, when electromotor needs high compression ratio, input high-voltage dc voltage uh, voltage comparator
27 and voltage comparator 28 export high level simultaneously, and door 26 output pulse signal cp, now motor rotate forward, rotor
14 drive inner sleeve 17 to rotate by splined shaft, and inner sleeve 17 passes through the interconnection function of screw thread the guide plate 16 in piston body bottom 15
Constraint lower band piston body top 18 move upwards, so that the lift of piston is increased, further pass through input voltage signal ux19
The length of persistent period controlling the size of piston lift increase amount, thus precisely increasing the compression ratio of electromotor.
When needing low compression ratio, input low-voltage dc voltage signal ul, voltage comparator 27 output low level, voltage ratio is relatively
Device 28 exports high level, and with door 26 output pulse signal cp, now motor reversion, rotor 14 is driven by splined shaft
Inner sleeve 17 rotates, and inner sleeve 17 passes through the interconnection function of screw thread the constraint lower band piston of the guide plate 16 in piston body bottom 15
Body top 18 moves downward, and so that piston lift is reduced, and passes through input voltage signal u furtherxThe length of 19 persistent period is controlling
The size of piston lift reduction amount processed, thus accurately reduce the compression ratio of electromotor.
When electromotor does not need to change compression ratio, input the d. c. voltage signal of 0v, now motor does not work, send out
The compression ratio of motivation is constant.
Claims (7)
1. a kind of controllor for step-by-step motor (20), including manostat (23), manostat (24), fixed rate pulse generator
(25) and door (26), voltage comparator (27), voltage comparator (28) it is characterised in that:
Described controllor for step-by-step motor (20) seals together with driver (21) and motor (motor stator 12, rotor 14)
It is fitted together, be arranged on inner sleeve (17) internal；
The input voltage signal u of described controllor for step-by-step motor (20)x(19) brush (4) is accessed by wire, then pass through annular
Graphite cuvette (2), bent axle graphite arrangement circuit (3), brush (5), connecting rod graphite arrangement circuit (7), brush (8), internal piston stone
Line of ink marker road arrangement circuit (9), internal piston wire (11) are transmitted, and are connected to step motor control by internal piston wire (11)
On device (20), negative pole is connected on the metal body of electromotor；
The input termination input voltage signal u of described manostat (23) and manostat (24)x(19), the output of manostat (23)
Terminate in voltage comparator (27) and the circuit of voltage comparator (28) end of oppisite phase, manostat (24) is linked into controller (20)
On the power interface of the chip used in driver (21)；
The described input with door (26) is respectively connected to outfan and the input voltage letter of fixed rate pulse generator (25)
Number ux(19), the pulse signal interface of output terminator actuator (21)；
The homophase termination input voltage signal u of described voltage comparator (27) and voltage comparator (28)x(19), voltage ratio is relatively
The course changing control interface of the outfan dir driver connected (21) of device (27), the outfan en of voltage comparator (28) is driver connected
(21) enable interface.
2. according to the controllor for step-by-step motor (20) described in claim 1 it is characterised in that described input voltage signal ux
(19) by ecu control, three kinds of states: high-voltage dc voltage u are hadh, low-voltage dc voltage ul, 0v, uhVoltage range be 12-
15v, ulVoltage range be 6-10v.
3. according to the controllor for step-by-step motor (20) described in claim 1 it is characterised in that described manostat (23) output is electric
Pressure us is the end of oppisite phase offer supply voltage of voltage comparator (27) and voltage comparator (28), powers for motor simultaneously,
Manostat (24) output voltage vcc is controller chip and driver chip is powered.
4. according to the controllor for step-by-step motor (20) described in claim 1 it is characterised in that described fixed frequency pulse occurs
The pulse frequency that device (25) exports is matched with stepper motor driver (21) demand.
5. according to the controllor for step-by-step motor (20) described in claim 1 it is characterised in that described is defeated with what door (26) accessed
Enter voltage signal ux(19) it is high-voltage dc voltage uhOr low-voltage dc voltage ulWhen, outfan output pulse signal is controlling
The angle displacement of motor and rotary speed, as input voltage signal ux(19), when being 0v, do not export pulse letter with door (26)
Number.
6. according to the controllor for step-by-step motor (20) described in claim 1 it is characterised in that described voltage comparator (27) is anti-
The voltage mutually held is less than uh, higher than ul；The voltage of the end of oppisite phase of voltage comparator (28) is less than ul, higher than 0v.
7. according to the controllor for step-by-step motor (20) described in claim 1 it is characterised in that described controllor for step-by-step motor
(20) pass through input signal ux(19) height of voltage and the length of persistent period to be adjusting the compression ratio of electromotor, when input electricity
Pressure signal ux(19) it is high-voltage dc voltage uhWhen, voltage comparator (27) and voltage comparator (28) export high level simultaneously, with
Door (26) output pulse signal cp, motor rotates forward, and so that the lift of piston is increased, and passes through input voltage signal u furtherx
(19) length of persistent period to be controlling the size of piston lift increase amount, thus precisely increasing the compression ratio of electromotor；When
Input voltage signal ux(19) it is low-voltage dc voltage ulWhen, voltage comparator (27) exports low level, and voltage comparator (28) is defeated
Go out high level, with door (26) output pulse signal cp, motor inverts, and so that piston lift is reduced, and passes through input electricity further
Pressure signal ux(19) length of persistent period to be controlling the size of piston lift reduction amount, thus accurately reducing the pressure of electromotor
Contracting ratio；As input voltage signal ux(19), when being 0v, motor does not work, and the compression ratio of electromotor is constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610975311.9A CN106357177B (en) | 2016-10-28 | 2016-10-28 | A kind of controllor for step-by-step motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610975311.9A CN106357177B (en) | 2016-10-28 | 2016-10-28 | A kind of controllor for step-by-step motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106357177A true CN106357177A (en) | 2017-01-25 |
| CN106357177B CN106357177B (en) | 2018-07-06 |
Family
ID=57864786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610975311.9A Expired - Fee Related CN106357177B (en) | 2016-10-28 | 2016-10-28 | A kind of controllor for step-by-step motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106357177B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593656A (en) * | 2017-02-28 | 2017-04-26 | 吉林大学 | Wireless WIFI-based variable lift compression ratio piston |
| CN110109396A (en) * | 2019-05-09 | 2019-08-09 | 中国飞机强度研究所 | A kind of arm of force control set for adjusting |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004124848A (en) * | 2002-10-03 | 2004-04-22 | Toyota Motor Corp | Variable compression ratio internal combustion engine having approximate rectilinear mechanism |
| CN103307168A (en) * | 2012-03-07 | 2013-09-18 | 长春孔辉汽车科技有限公司 | Novel damping-adjustable shock absorber |
| WO2015030612A1 (en) * | 2013-09-02 | 2015-03-05 | Hieff Engine Company Ltd | An internal combustion engine |
| CN105370417A (en) * | 2015-12-07 | 2016-03-02 | 吉林大学 | Piston with variable lift compression ratio |
| CN205172740U (en) * | 2015-12-07 | 2016-04-20 | 吉林大学 | Variable lift compression ratio piston |
-
2016
- 2016-10-28 CN CN201610975311.9A patent/CN106357177B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004124848A (en) * | 2002-10-03 | 2004-04-22 | Toyota Motor Corp | Variable compression ratio internal combustion engine having approximate rectilinear mechanism |
| CN103307168A (en) * | 2012-03-07 | 2013-09-18 | 长春孔辉汽车科技有限公司 | Novel damping-adjustable shock absorber |
| WO2015030612A1 (en) * | 2013-09-02 | 2015-03-05 | Hieff Engine Company Ltd | An internal combustion engine |
| CN105370417A (en) * | 2015-12-07 | 2016-03-02 | 吉林大学 | Piston with variable lift compression ratio |
| CN205172740U (en) * | 2015-12-07 | 2016-04-20 | 吉林大学 | Variable lift compression ratio piston |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593656A (en) * | 2017-02-28 | 2017-04-26 | 吉林大学 | Wireless WIFI-based variable lift compression ratio piston |
| CN110109396A (en) * | 2019-05-09 | 2019-08-09 | 中国飞机强度研究所 | A kind of arm of force control set for adjusting |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106357177B (en) | 2018-07-06 |
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Granted publication date: 20180706 Termination date: 20211028 |