CN101943062A - Unloading method for realizing start-stop function of engine - Google Patents
Unloading method for realizing start-stop function of engine Download PDFInfo
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- CN101943062A CN101943062A CN201010285038XA CN201010285038A CN101943062A CN 101943062 A CN101943062 A CN 101943062A CN 201010285038X A CN201010285038X A CN 201010285038XA CN 201010285038 A CN201010285038 A CN 201010285038A CN 101943062 A CN101943062 A CN 101943062A
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Abstract
The invention relates to an unloading method for realizing a start-stop function of an engine, which is composed of a servo valve mechanism and a control oil path mechanism. The invention is characterized in that the servo valve mechanism is composed of a lock nut, a stop collar, a stretching screw, a piston, a check ring and a piston spring, wherein the stretching screw is fixed on a braced frame; a gap between the stretching screw and the stop collar is the opening lift 1 mm for a servo valve to drive an exhaust valve; the stop collar is positioned in a piston cavity; the piston spring is positioned in the stop collar; the upper end surface of the stop collar still contacts with the check ring; and the lock nut is used for fixing the stretching screw. The control oil path mechanism is composed of a solenoid valve, a control valve, a control valve snap spring, a control valve return spring and the braced frame, wherein the solenoid valve and the control valve are arranged on the braced frame; and the upper part of the control valve is provided with the control valve return spring and the control valve snap spring. The invention reduces cylinder pressure generated in the starting process so as to reduce the resisting moment in the starting process and prolong the service life of a starter, thus the engine consume minimum energy in the whole starting process to improve the economical efficiency of the complete machine. The invention has simple principle, structure and control system and high response speed.
Description
Technical field
The present invention relates to a kind of unloading method of realizing the engine start/stop function, be particularly useful for having the engine start/stop control of high pulling torque starting electrical machinery.
Background technique
The pollution maximum of automobile tail gas under idling operation, fuel combustion is insufficient, wastes energy, and the Economy of motor and emission performance are descended.In order to address this problem, further improve the performance of motor, a lot of car manufactures have been released the start-stop technology on miniature or compact car.Existing motor adopts traditional actuating motor in starting process; when idle speed controller detects vehicle and needs power; system can pilot engine automatically; starter motor work; drag motor to starting speed; this start mode starting time is long, and when the frequent shutdown of motor/starting, starting is unstable.
In addition, in starting process, work cycle of cylinder is worst stages of starting process since 540 compression strokes of spending, the resisting moment maximum that starter motor overcomes in this process.Therefore, need open exhaust valve, reduce the cylinder of starting process and press, reduce the resisting moment of starting process, prolong the starter motor life-span in compression stroke.
Summary of the invention
The object of the present invention is to provide a kind of unloading method of realizing the engine start/stop function, it makes motor consume minimum power in starting process by a servo valve mechanism, can reduce the cylinder of starting process and press, reduce the resisting moment of starting process, prolong the starter motor life-span.
Technological scheme of the present invention is achieved in that a kind of unloading method of realizing the engine start/stop function, form by a servo valve mechanism and control oil channel mechanism, it is characterized in that: servo valve mechanism is by locking nut, stop collar, adjust screw rod, piston, back-up ring, piston spring is formed, wherein adjusting screw rod is fixed on the support frame, the gap of adjusting between screw rod and the stop collar is the unlatching lift 1mm that servo valve drives exhaust valve, stop collar is positioned at piston cavity inside, piston spring is positioned at stop collar inside, the stop collar upper-end surface contacts with back-up ring all the time, and locking nut is used for fixing the adjustment screw rod; Control oil channel mechanism is made up of solenoid valve, control valve, control valve jump ring, control valve return spring, support frame, and wherein solenoid valve and control valve are arranged on the support frame, and control valve top is equipped with control valve return spring and control valve jump ring.
Its working procedure is as follows:
Under the idling condition, adjust screw rod 3 is positioned at piston 4 under piston spring 6 effects bottom, between piston 4 and air valve bridge certain interval is arranged, servo valve is the pressurized gas raft of pontoons not, exhaust valve is in closed condition, prestart, engine electronic control unit sends instruction, makes starter motor work, and solenoid valve 7 is opened, under engine oil pressure drives, control valve 8 compression control valve return springs 10 move upward, and the oilhole of machine oil on support frame 11 enters the servo valve upper-end surface, promote stop collar 2, piston 4, back-up ring 5, piston spring 6 moves downward, drive guiding valve 12 on the air valve bridge, use unloading method and back down the about 1mm of exhaust valve slightly.
Good effect of the present invention is that the cylinder that reduces starting process is pressed, thereby reduces the resisting moment of starting process, prolongs the starter motor life-span, makes motor minimum at the energy that whole starting process consumes, and improves the Economy of complete machine.Principle of the present invention, structure and control system are simple, and speed of response is fast.
Description of drawings
Fig. 1 is a unloading method structural drawing of realizing the engine start/stop function.
Fig. 2 is a unloading method explosive view of realizing the engine start/stop function.
Fig. 3 is oil circuit figure when realizing the unloading method work of engine start/stop function.
Specific embodiments
Below in conjunction with accompanying drawing the present invention is described further: as Figure 1-3, a kind of unloading method of realizing the engine start/stop function, form by a servo valve mechanism and control oil channel mechanism, it is characterized in that: servo valve mechanism is by locking nut 1, stop collar 2, adjust screw rod 3, piston 4, back-up ring 5, piston spring 6 is formed, wherein adjusting screw rod is fixed on the support frame, the gap of adjusting between screw rod and the stop collar is the unlatching lift 1mm that servo valve drives exhaust valve, stop collar is positioned at piston cavity inside, piston spring is positioned at stop collar inside, the stop collar upper-end surface contacts with back-up ring all the time, and locking nut is used for fixing the adjustment screw rod; Control oil channel mechanism is made up of solenoid valve 7, control valve 8, control valve jump ring 9, control valve return spring 10, support frame 11, and wherein solenoid valve and control valve are arranged on the support frame, and control valve top is equipped with control valve return spring and control valve jump ring.
Its working procedure is as follows:
Under the idling condition, adjust screw rod 3 is positioned at piston 4 under piston spring 6 effects bottom, between piston 4 and air valve bridge certain interval is arranged, servo valve is the pressurized gas raft of pontoons not, exhaust valve is in closed condition, prestart, engine electronic control unit sends instruction, make starter motor work, solenoid valve 7 is opened, under engine oil pressure drives, control valve 8 compression control valve return springs 10 move upward, the oilhole of machine oil on support frame 11 enters the servo valve upper-end surface, promotes stop collar 2, piston 4, back-up ring 5, piston spring 6 moves downward, and drives guiding valve 12 on the air valve bridge, use unloading method and back down the about 1mm of exhaust valve slightly, reduce the initial resistance of compression stroke, thereby reduce the resisting moment of starter motor turning crankshaft, in the starting process, when engine speed reaches starting speed 200rpm, close each cylinder exhaust valve of opening one by one, partial cylinders is introduced into proper functioning, and all the other each cylinders enter proper functioning more then.
The control oil channel mechanism of the unloading method of realization engine start/stop function of the present invention comprises solenoid valve 7, control valve 8, control valve jump ring 9, control valve return spring 10, support frame 11, solenoid valve 7, control valve 8 are arranged on the support frame 11, and control valve 8 tops are equipped with control valve return spring 10 and control valve jump ring 9.
Before the engine start, electronic control unit sends instruction, makes starter motor work, uses unloading method and backs down exhaust valve (about 1mm) slightly.Solenoid valve 7 is opened, under engine oil pressure drives, control valve 8 compression control valve return springs 10 move upward, the oilhole of machine oil on support frame 11 enters the servo valve upper-end surface, promotion stop collar 2, piston 4, back-up ring 5, piston spring 6 move downward, and promote exhaust valve bridge, and air valve bridge is opened exhaust valve under the pressure of servo valve, discharge pressurized gas, reduce the starting process inner pressure of air cylinder.In servo valve when work,, oil circuit figure is as shown in Figure 4 as shown in Figure 3 in the position of stop collar 2, piston 4, back-up ring 5, piston spring 6.When engine speed reaches starting speed 200rpm, solenoid valve 7 cuts out, the spill port of machine oil in the servo valve in solenoid valve flows out, stop collar 2, piston 4, back-up ring 5, under the effect of piston spring 6, reset, adjust screw rod 3 and be positioned at piston 4 bottoms, servo valve is not worked, and exhaust valve is no longer exerted an influence, and motor enters normal working.
Claims (2)
1. unloading method of realizing the engine start/stop function, form by a servo valve mechanism and control oil channel mechanism, it is characterized in that: servo valve mechanism is made up of locking nut, stop collar, adjustment screw rod, piston, back-up ring, piston spring, wherein adjusting screw rod is fixed on the support frame, the gap of adjusting between screw rod and the stop collar is the unlatching lift 1mm that servo valve drives exhaust valve, stop collar is positioned at piston cavity inside, piston spring is positioned at stop collar inside, the stop collar upper-end surface contacts with back-up ring all the time, and locking nut is used for fixing the adjustment screw rod; Control oil channel mechanism is made up of solenoid valve, control valve, control valve jump ring, control valve return spring, support frame, and wherein solenoid valve and control valve are arranged on the support frame, and control valve top is equipped with control valve return spring and control valve jump ring.
2. according to the described a kind of unloading method of realizing the engine start/stop function of claim 1, it is characterized in that described working procedure is as follows: under the idling condition, adjust screw rod 3 is positioned at piston 4 under piston spring 6 effects bottom, between piston 4 and air valve bridge certain interval is arranged, servo valve is the pressurized gas raft of pontoons not, exhaust valve is in closed condition, prestart, engine electronic control unit sends instruction, make starter motor work, solenoid valve 7 is opened, and under engine oil pressure drove, control valve 8 compression control valve return springs 10 moved upward, the oilhole of machine oil on support frame 11 enters the servo valve upper-end surface, promote stop collar 2, piston 4, back-up ring 5, piston spring 6 moves downward, and drives guiding valve 12 on the air valve bridge, uses unloading method and backs down the about 1mm of exhaust valve slightly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010285038XA CN101943062A (en) | 2010-09-17 | 2010-09-17 | Unloading method for realizing start-stop function of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010285038XA CN101943062A (en) | 2010-09-17 | 2010-09-17 | Unloading method for realizing start-stop function of engine |
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| Publication Number | Publication Date |
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| CN101943062A true CN101943062A (en) | 2011-01-12 |
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| CN201010285038XA Pending CN101943062A (en) | 2010-09-17 | 2010-09-17 | Unloading method for realizing start-stop function of engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705290A (en) * | 2012-07-02 | 2012-10-03 | 赵茹 | Low-gravity buffering constant-force air cylinder |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0913924A (en) * | 1995-06-29 | 1997-01-14 | Nissan Motor Co Ltd | Variable valve system for internal combustion engine |
| JPH10110634A (en) * | 1996-10-08 | 1998-04-28 | Mitsubishi Motors Corp | Engine auxiliary braking device |
| CN1282837A (en) * | 1999-07-30 | 2001-02-07 | 边永安 | Variable compression ratio and variable air distributing phase |
| CN2429635Y (en) * | 2000-06-28 | 2001-05-09 | 赵远岭 | Automatic pressure reducer for diesel engine |
| CN2497047Y (en) * | 2001-08-18 | 2002-06-26 | 赵远岭 | Automatic pressure-releasing device for diesel engine |
| CN101182885A (en) * | 2007-11-20 | 2008-05-21 | 孙立伟 | Internal-combustion engines vehicle power intelligence control system and control method control method thereof |
-
2010
- 2010-09-17 CN CN201010285038XA patent/CN101943062A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0913924A (en) * | 1995-06-29 | 1997-01-14 | Nissan Motor Co Ltd | Variable valve system for internal combustion engine |
| JPH10110634A (en) * | 1996-10-08 | 1998-04-28 | Mitsubishi Motors Corp | Engine auxiliary braking device |
| CN1282837A (en) * | 1999-07-30 | 2001-02-07 | 边永安 | Variable compression ratio and variable air distributing phase |
| CN2429635Y (en) * | 2000-06-28 | 2001-05-09 | 赵远岭 | Automatic pressure reducer for diesel engine |
| CN2497047Y (en) * | 2001-08-18 | 2002-06-26 | 赵远岭 | Automatic pressure-releasing device for diesel engine |
| CN101182885A (en) * | 2007-11-20 | 2008-05-21 | 孙立伟 | Internal-combustion engines vehicle power intelligence control system and control method control method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705290A (en) * | 2012-07-02 | 2012-10-03 | 赵茹 | Low-gravity buffering constant-force air cylinder |
| CN102705290B (en) * | 2012-07-02 | 2015-05-13 | 赵茹 | Low-gravity buffering constant-force air cylinder |
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Application publication date: 20110112 |