CN103121468A - Novel energy-saving type electronic control power-assisted steering system - Google Patents
Novel energy-saving type electronic control power-assisted steering system Download PDFInfo
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- CN103121468A CN103121468A CN2013100702584A CN201310070258A CN103121468A CN 103121468 A CN103121468 A CN 103121468A CN 2013100702584 A CN2013100702584 A CN 2013100702584A CN 201310070258 A CN201310070258 A CN 201310070258A CN 103121468 A CN103121468 A CN 103121468A
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Abstract
The invention belongs to the field of power-assisted steering equipment, and particularly relates to a novel energy-saving type electronic control power-assisted steering system. The novel energy-saving type electronic control power-assisted steering system comprises a steering machine, and is characterized by further comprising an electric hydraulic pump connected with the steering machine, hydraulic pipelines, an oil tank communicated with the electric hydraulic pump, an electronic control unit respectively connected with the steering machine and the electric hydraulic pump, and a hydraulic accumulator arranged on the hydraulic pipelines. The novel energy-saving type electronic control power-assisted steering system is big in assisting power, high in energy density, and energy-saving, and feeling of the assisting power is changeable with the speed of a vehicle.
Description
Technical field
The invention belongs to the power steering apparatus field, be specifically related to the automatically controlled servo steering system of a kind of novel energy-saving.
Background technology
Current automobile has assembled servo steering system nearly all, and its original intention is in order to reduce the labour intensity of pilot control vehicle, to improve the driver comfort of vehicle.The direction of modern steering swivel system development is the application by up-to-date technology, reduce the consumption of energy and to the pollution of environment, and by the Fine design to assist characteristic, for the driver provides different feel feedbacks, highlight vehicle and drive feature, bring more Driving.
Traditional hydraulic power-assist steering system (HPS) relies on the driven by engine boost pump that energy is provided, and is used for power steering.As long as engine running, system is just at consumed energy, and do not depend on whether handling maneuver is arranged.In addition, the power-assisted size that traditional HPS provides can't be regulated with the speed of a motor vehicle, can't take into account the larger original place operating mode of power-assisted demand and the less driving cycle of power-assisted demand, often cause the power-assisted feel of " original place is heavy; high speed is unstable ", and day by day embody various drawbacks, be particular about control with comfortable manned vehicle on substituted by the variable hydraulic power-assist steering system of more senior feel gradually, but the cost of this senior variable force aid system be traditional HPS 2-3 doubly, be of limited application.
Last century Mo, electric boosting steering system (EPS) arises at the historic moment, this new system adopts motor to provide power-assisted for steering swivel system, only when turning to, needs just do work, greatly saved energy consumption, and owing to being system wholly computer controlled, the power-assisted size is regulated according to the speed of a motor vehicle easily also, cost is also easily accepted by middle-grade car, so application is increasing.But the EPS system is due to the restriction of power of motor, battery capacity and dynamo current, and use in the manned vehicle field that is only suitable at curb mass below 2 tons, seems helpless for the much bigger commercial vehicle/comm..vehicle of weight.
Summary of the invention
Technical purpose of the present invention is to overcome the problems of the prior art, provides that a kind of power-assisted is large, energy density is high, energy-conservation, power-assisted feel is with the automatically controlled servo steering system of the variable novel energy-saving of the speed of a motor vehicle (EHPS).
For realizing purpose of the present invention, the technical solution used in the present invention is: the automatically controlled servo steering system of a kind of novel energy-saving, comprise steering wheel, it is characterized in that: also comprise the fuel tank of the electric hydraulic pump that is connected with steering wheel, hydraulic tubing, connection electric hydraulic pump, the ECU (Electrical Control Unit) that is connected with electric hydraulic pump with steering wheel respectively, the hydraulic energy storage device that is arranged at hydraulic tubing.
The automatically controlled servo steering system of aforesaid a kind of novel energy-saving, hydraulic tubing also is provided with pressure sensor, apportioning valve, and pressure sensor is between electric hydraulic pump and apportioning valve, and apportioning valve is connected with ECU (Electrical Control Unit) with steering wheel simultaneously.
The automatically controlled servo steering system of aforesaid a kind of novel energy-saving is provided with temperature sensor between described fuel tank and ECU (Electrical Control Unit).
The automatically controlled servo steering system of aforesaid a kind of novel energy-saving, described ECU (Electrical Control Unit) also are connected with the rotary angle transmitter of average speed indicator, bearing circle; Rotary angle transmitter is connected with steering wheel.
The automatically controlled servo steering system of aforesaid a kind of novel energy-saving, the vehicle speed signal that described average speed indicator sends is passed to ECU (Electrical Control Unit), the tach signal that steering wheel angle sensor sends is passed to ECU (Electrical Control Unit), and ECU (Electrical Control Unit) is passed to apportioning valve with vehicle speed signal and tach signal.
The automatically controlled servo steering system of aforesaid a kind of novel energy-saving, the fuel tank oil liquid temperature signal that described temperature sensor sends is passed to ECU (Electrical Control Unit), and ECU (Electrical Control Unit) is passed to apportioning valve with fuel tank oil liquid temperature signal.
The automatically controlled servo steering system of aforesaid a kind of novel energy-saving, described pressure sensor is connected with ECU (Electrical Control Unit).
The present invention has replaced with electric hydraulic pump the Hydraulic Pump that driving engine directly drives, and can allow pump along with system need to start or stop, and has played the effect of conserve energy; Electric hydraulic pump can be close to the steering wheel installation, farthest shortens hydraulic tubing back and forth, reduces loss of pressure and energy dissipation, for rear-engined long wheelbase vehicle, improves especially obvious; Because motor power (output) is limited, in order not affect the maximum power-assisted of system, added a hydraulic energy storage device in pressure duct, be used for the savings hydraulic energy, can provide larger power-assisted when pivot stud; Add apportioning valve in the high-pressure and hydraulic pipeline, according to charge oil pressure and the flow of the speed of a motor vehicle and bearing circle speed adjustment system, for the different speed of a motor vehicle provides different power-assisted feels, played the turning efficiency of " low speed is light, and is stable at a high speed "; Add temperature sensor in system, be used for compensation oil viscosity variation with temperature, at different temperature, revise the aperture of apportioning valve, make the power-assisted feel not be subjected to the impact of oil liquid temperature.
Description of drawings
Fig. 1 is the structural representation of the automatically controlled servo steering system of a kind of novel energy-saving;
Wherein, 1 fuel tank, 2 temperature sensors, 3 electric hydraulic pumps, 4 pressure sensors, 5 hydraulic energy storage devices, 6 apportioning valves, 7 ECU (Electrical Control Unit), 8 steering wheels, 9 rotary angle transmitters, 10 bearing circle, 11 average speed indicators.
The specific embodiment
For technical scheme, technical characterictic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with the specific embodiment, further set forth the present invention.
According to Fig. 1, the automatically controlled servo steering system of a kind of novel energy-saving, comprise steering wheel 8, it is characterized in that: also comprise the fuel tank 1 of the electric hydraulic pump 3 that is connected with steering wheel 8, hydraulic tubing, connection electric hydraulic pump 3, be connected the ECU (Electrical Control Unit) 7 that is connected, the hydraulic energy storage device 5 that is arranged at hydraulic tubing with electric hydraulic pump with steering wheel 8 respectively.Hydraulic tubing also is provided with pressure sensor 4, apportioning valve 6, and pressure sensor 4 is between electric hydraulic pump 3 and apportioning valve 6, and apportioning valve 6 is connected with ECU (Electrical Control Unit) with steering wheel 8 is connected simultaneously, and pressure sensor 4 is connected with ECU (Electrical Control Unit) 7.Be provided with temperature sensor 2 between fuel tank 1 and ECU (Electrical Control Unit) 7.ECU (Electrical Control Unit) 7 also is connected with the rotary angle transmitter 9 of average speed indicator 11, bearing circle 10, and rotary angle transmitter 9 is connected with steering wheel 8.The vehicle speed signal that average speed indicator 11 sends is passed to ECU (Electrical Control Unit) 7, and the tach signal that bearing circle 10 rotary angle transmitters 9 send is passed to ECU (Electrical Control Unit) 7, and ECU (Electrical Control Unit) 7 is passed to apportioning valve 6 with vehicle speed signal and tach signal.The fuel tank oil liquid temperature signal that temperature sensor 2 sends is passed to ECU (Electrical Control Unit) 7, and ECU (Electrical Control Unit) 7 is passed to apportioning valve 6 with fuel tank oil liquid temperature signal.
The concrete control process of system of the present invention is as follows: 1) ECU (Electrical Control Unit) 7 judges whether to start electric hydraulic pump 3 according to the pressure of hydraulic energy storage device 5 and continues supplementary pressures, when pressure in limited time lower lower than setting, motor start-up; When reaching capping, electrical motor stops.When the speed of a motor vehicle is higher, set lower limit and can suitably reduce, to extend the rundown time of electrical motor, reduce frequent starting.2) under the operating mode of original place, bearing circle 10 rotating speeds are 0, and during namely without handling maneuver, apportioning valve 6 turn-offs, and hydraulic energy storage device 5 is in packing state.Bearing circle 10 rotating speeds are not 0 o'clock, and apportioning valve 6 is opened to maximum, and system can provide maximum power-assisted.3) under driving cycle, bearing circle 10 corners are 0, and during namely without handling maneuver, apportioning valve 6 turn-offs, and hydraulic energy storage device 5 is in packing state.Bearing circle 10 corners are not 0 o'clock, and ECU (Electrical Control Unit) 7 determines the aperture of apportioning valve 6 according to current vehicle speed, and general relationship is that the speed of a motor vehicle is higher, and apportioning valve 6 apertures are less.
The present invention has replaced with electric hydraulic pump 3 Hydraulic Pump that driving engine directly drives, and can allow pump along with system need to start or stop, and has played the effect of conserve energy; Electric hydraulic pump 3 can be close to steering wheel 8 installations, farthest shortens hydraulic tubing back and forth, reduces loss of pressure and energy dissipation, for rear-engined long wheelbase vehicle, improves especially obvious; Because motor power (output) is limited, in order not affect the maximum power-assisted of system, added a hydraulic energy storage device 5 in pressure duct, be used for the savings hydraulic energy, can provide larger power-assisted when pivot stud; Add apportioning valve 6 in the high-pressure and hydraulic pipeline, according to charge oil pressure and the flow of the speed of a motor vehicle and bearing circle speed adjustment system, for the different speed of a motor vehicle provides different power-assisted feels, played the turning efficiency of " low speed is light, and is stable at a high speed "; Add temperature sensor 2 in system, be used for compensation oil viscosity variation with temperature, at different temperature, revise the aperture of apportioning valve 6, make the power-assisted feel not be subjected to the impact of oil liquid temperature.
Above demonstration and described groundwork of the present invention, principal character and advantage of the present invention.The technical personnel of the industry should be understood; the present invention is not restricted to the described embodiments; that describes in above-described embodiment and specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (7)
1. automatically controlled servo steering system of novel energy-saving, comprise steering wheel, it is characterized in that: also comprise the fuel tank of the electric hydraulic pump that is connected with steering wheel, hydraulic tubing, connection electric hydraulic pump, the ECU (Electrical Control Unit) that is connected with electric hydraulic pump with steering wheel respectively, the hydraulic energy storage device that is arranged at hydraulic tubing.
2. the automatically controlled servo steering system of a kind of novel energy-saving according to claim 1, it is characterized in that: hydraulic tubing also is provided with pressure sensor, apportioning valve, pressure sensor is between electric hydraulic pump and apportioning valve, and apportioning valve is connected with ECU (Electrical Control Unit) with steering wheel simultaneously.
3. the automatically controlled servo steering system of a kind of novel energy-saving according to claim 1, is characterized in that: be provided with temperature sensor between described fuel tank and ECU (Electrical Control Unit).
4. the automatically controlled servo steering system of a kind of novel energy-saving according to claim 2, it is characterized in that: described ECU (Electrical Control Unit) also is connected with the rotary angle transmitter of average speed indicator, bearing circle; Rotary angle transmitter is connected with steering wheel.
5. the automatically controlled servo steering system of a kind of novel energy-saving according to claim 4, it is characterized in that: the vehicle speed signal that described average speed indicator sends is passed to ECU (Electrical Control Unit), the tach signal that steering wheel angle sensor sends is passed to ECU (Electrical Control Unit), and ECU (Electrical Control Unit) is passed to apportioning valve with vehicle speed signal and tach signal.
6. the automatically controlled servo steering system of a kind of novel energy-saving according to claim 3, it is characterized in that: the fuel tank oil liquid temperature signal that described temperature sensor sends is passed to ECU (Electrical Control Unit), and ECU (Electrical Control Unit) is passed to apportioning valve with fuel tank oil liquid temperature signal.
7. the automatically controlled servo steering system of a kind of novel energy-saving according to claim 2, it is characterized in that: described pressure sensor is connected with ECU (Electrical Control Unit).
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013100702584A CN103121468A (en) | 2013-03-06 | 2013-03-06 | Novel energy-saving type electronic control power-assisted steering system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013100702584A CN103121468A (en) | 2013-03-06 | 2013-03-06 | Novel energy-saving type electronic control power-assisted steering system |
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| CN103121468A true CN103121468A (en) | 2013-05-29 |
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| CN2013100702584A Pending CN103121468A (en) | 2013-03-06 | 2013-03-06 | Novel energy-saving type electronic control power-assisted steering system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104206062A (en) * | 2013-05-30 | 2014-12-17 | 凯斯纽荷兰(上海)机械研发有限公司 | Windrower steering system |
| CN105644620A (en) * | 2016-04-05 | 2016-06-08 | 南京林业大学 | Energy-saving constant pressure type hydraulic power steering system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4666013A (en) * | 1984-01-31 | 1987-05-19 | Nissan Motor Co., Ltd. | Steering control system for wheeled vehicle |
| US5224564A (en) * | 1991-05-24 | 1993-07-06 | Ford Motor Company | Hydrostatic power steering system |
| EP0665157A1 (en) * | 1993-12-22 | 1995-08-02 | CENTRO RICERCHE FIAT Società Consortile per Azioni | Power-steering device for motor-vehicles |
| CN1615238A (en) * | 2002-01-10 | 2005-05-11 | 戴科产品有限责任公司 | High efficiency automotive hydraulic power steering system |
| JP2009255868A (en) * | 2008-04-21 | 2009-11-05 | Daikin Ind Ltd | Power steering device |
| CN203111300U (en) * | 2013-03-06 | 2013-08-07 | 苏州绿控传动科技有限公司 | Novel energy-efficient electric control power assisted steering system |
-
2013
- 2013-03-06 CN CN2013100702584A patent/CN103121468A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4666013A (en) * | 1984-01-31 | 1987-05-19 | Nissan Motor Co., Ltd. | Steering control system for wheeled vehicle |
| US5224564A (en) * | 1991-05-24 | 1993-07-06 | Ford Motor Company | Hydrostatic power steering system |
| EP0665157A1 (en) * | 1993-12-22 | 1995-08-02 | CENTRO RICERCHE FIAT Società Consortile per Azioni | Power-steering device for motor-vehicles |
| CN1615238A (en) * | 2002-01-10 | 2005-05-11 | 戴科产品有限责任公司 | High efficiency automotive hydraulic power steering system |
| JP2009255868A (en) * | 2008-04-21 | 2009-11-05 | Daikin Ind Ltd | Power steering device |
| CN203111300U (en) * | 2013-03-06 | 2013-08-07 | 苏州绿控传动科技有限公司 | Novel energy-efficient electric control power assisted steering system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104206062A (en) * | 2013-05-30 | 2014-12-17 | 凯斯纽荷兰(上海)机械研发有限公司 | Windrower steering system |
| CN105644620A (en) * | 2016-04-05 | 2016-06-08 | 南京林业大学 | Energy-saving constant pressure type hydraulic power steering system |
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Application publication date: 20130529 |