CN104477116B - A kind of four-wheel drive cars moment of torsion Real time dynamic display system and method - Google Patents
A kind of four-wheel drive cars moment of torsion Real time dynamic display system and method Download PDFInfo
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- CN104477116B CN104477116B CN201410735534.9A CN201410735534A CN104477116B CN 104477116 B CN104477116 B CN 104477116B CN 201410735534 A CN201410735534 A CN 201410735534A CN 104477116 B CN104477116 B CN 104477116B
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- 238000004891 communication Methods 0.000 claims abstract description 15
- 238000004364 calculation method Methods 0.000 claims description 2
- 238000004088 simulation Methods 0.000 claims description 2
- 230000007423 decrease Effects 0.000 abstract description 2
- 230000000007 visual effect Effects 0.000 abstract description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
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- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
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Abstract
The present invention proposes a kind of four-wheel drive cars moment of torsion Real time dynamic display system and method, improves 4 wheel driven prompting mode, including, 4 wheel driven switch, 4 wheel driven controller and engine controller, CAN communication platform, meter processor and instrument panel.Native system shows four-wheel moment of torsion with dynamic column ratio chart, replaces the 4 wheel driven mode context warning light in instrument, optimizes the visual effect that 4 wheel driven shows, it is possible to more intuitively, vivo express the torque condition of 4 wheel driven；And front and back wheel torque arithmetic scheme is simplified, decreases the computation burden of controller, saved cost.
Description
Technical field
The present invention relates to car transmissions technical field, particularly to automobile 4 wheel driven control and display technology.
Background technology
Four-wheel drive system in the market mainly includes AWD, the intelligence four-wheel drive system such as 4 wheel driven and time sharing, wherein the kernel component of intelligence four-wheel drive system is 4 wheel driven controller, such four-wheel drive system can be according to the driving intention of driver and car status information, real-time intelligent ground controls the output torque of 4 wheel driven actuator, demand torque is delivered on trailing wheel, realize vehicle 4 wheel driven function, thus improve dynamic property and the stability of vehicle.
Intelligent four-wheel drive system on market contains 2WD, Auto or Lock mode (i.e. two drive pattern, automatic 4 wheel driven pattern and forced locking 4 wheel driven pattern), in Fig. 1,4 wheel driven switch 1 comprises tri-patterns of 2WD, AUTO or Lock, these three pattern is connected with corresponding 2WD 4 wheel driven warning light 2, AUTO background warning light 3, Lock background warning light 4 respectively, when one of them background light circuit of 4 wheel driven switch connection, in instrument, corresponding background warning light is connected, corresponding background light Chang Liang, the driving condition of prompting 4 wheel driven.This 4 wheel driven prompting mode implements very simple, but can only reflect 4 wheel driven state qualitatively, and form is the most dull, it is impossible to intuitively, vivo embody the driving condition of 4 wheel driven.
If requiring intuitively, vivo to embody 4 wheel driven state, can carry out moment of torsion on instrument liquid crystal display screen shows, the most just requiring to calculate the four-wheel moment of torsion of four-wheel drive cars, computing formula is:
TBefore=Ttq *ig
*i0 -Te *ir；(formula 1)
TAfter=Te *ip；(formula 2)
TBefore: front wheel torque
Ttq: engine output torque
ig: gearbox-gear speed ratio
i0: master subtracts ratio
Te: torque management device output torque targets value
ir: rear axle ratio
TAfter: trailing wheel moment of torsion
ip: transfer gear speed ratio
According to the two formula, signal T required in formulatq 、ig 、TeCan read on CAN platform, but owing to computational methods are the most complicated, need a controller individually to calculate, the burden of controller can be increased, cost certainly will be increased.
Summary of the invention
The present invention is directed to the problems referred to above, propose a kind of four-wheel drive cars moment of torsion Real time dynamic display system and method, 4 wheel driven prompting mode is improved, shows four-wheel moment of torsion with dynamic column ratio chart, replace the 4 wheel driven mode context warning light in instrument, and front and back wheel torque arithmetic scheme is simplified.
The purpose of the present invention one is to propose a kind of four-wheel drive cars moment of torsion Real time dynamic display system, including, 4 wheel driven switch, 4 wheel driven controller and engine controller, CAN communication platform, meter processor and instrument panel；
Described 4 wheel driven switch selects the instruction of 4 wheel driven pattern for receiving user, and this instruction is sent to 4 wheel driven controller；
Described 4 wheel driven controller and engine controller are used for that 4 wheel driven mode signal and torque management device are exported torque targets value Te and engine output torque Ttq these three signal is delivered to CAN communication platform；
Meter processor is for reading described three signals on CAN signal platform, and according to the proportionate relationship between torque management device output torque targets value Te and the actual size of two signals of engine output torque Ttq and the two signal theory maximum, calculate the height of column bright fringes in front wheel torque and trailing wheel moment of torsion, replace formula 1 and formula 2 by this processing mode.
Instrument panel, for being driven by meter processor 7, shows front wheel torque and four column ratio charts of trailing wheel moment of torsion and the text prompt about 4 wheel driven pattern.
The purpose of the present invention two is to propose a kind of four-wheel drive cars moment of torsion Real time dynamic display method, the dynamic display system using 4 wheel driven switch, 4 wheel driven controller, engine controller, CAN communication platform, meter processor and instrument panel to constitute, and comprises the following steps:
(1) 4 wheel driven switch receives user and selects the instruction of 4 wheel driven pattern, and this instruction is sent to 4 wheel driven controller 5；
(2) 4 wheel driven mode signal, torque management device output torque targets value Te and two signals of engine output torque Ttq are delivered to CAN communication platform by 4 wheel driven controller and engine controller respectively；
(3) meter processor reads these three signal from CAN signal platform；
(4) meter processor is according to the proportionate relationship between torque management device output torque targets value Te and the actual size of two signals of engine output torque Ttq and the two signal theory maximum, calculates the height of column bright fringes in front wheel torque and trailing wheel moment of torsion；
(5) result of calculation and 4 wheel driven mode signal are sent to instrument liquid crystal display screen by meter processor 7, drive instrument liquid crystal display screen display front wheel torque and four column ratio charts of trailing wheel moment of torsion and the text prompt about 4 wheel driven pattern.
This invention has a techniques below effect:
Use dynamic column ratio chart to replace instrument 4 wheel driven background light, optimize the visual effect that 4 wheel driven shows, it is possible to more intuitively, vivo express the torque condition of 4 wheel driven；After simplified formula, decrease the computation burden of controller, saved cost.
Accompanying drawing explanation
Fig. 1 is the circuit theory schematic diagram that existing method uses background warning light；
Fig. 2 is the circuit theory schematic diagram realizing this invention；
Fig. 3 is the moment of torsion display effect schematic diagram of the present invention.
Detailed description of the invention
Below the present invention is described further:
In the present invention, our purpose is only the variation tendency needing user to know 4 wheel driven front and back wheel moment of torsion intuitively, and the involvement level that trailing wheel moment of torsion is substantially, is not required to the accurate size of front and back wheel moment of torsion.The program to be realized, replaces formula 1 and formula 2, front wheel torque " engine output torque T with relevant signaltq" approximate representation, trailing wheel moment of torsion " torque management device output torque targets value Te" approximate representation, the variation tendency of the two signal is consistent with the variation tendency of formula 1 and formula 2, it is possible to realize the program.
Concrete improvement project is:
Cancel the 4 wheel driven background warning light in instrument, it is to avoid show with the moment of torsion on instrument panel 8 and repeat.Use " engine output torque Ttq " that engine controller 6 sends and " torque management device output torque targets value Te " two signals that 4 wheel driven controller 5 sends, by CAN platform, the two signal is sent to instrument signal processing module 7, drive the dynamic column ratio chart on instrument liquid crystal display screen 4, dynamically column ratio chart changes accordingly along with the change of " engine output torque Ttq " and " torque management device output torque targets value Te " signal, also it is achieved that in real time, dynamically show the substantially allocation proportion of front and back wheel moment of torsion, and the involvement level of four-wheel drive system.
Referring specifically to Fig. 2, " torque management device output torque targets value Te " and " engine output torque Ttq " two signals can be delivered on CAN communication platform 9 by 4 wheel driven controller 5 and engine controller 6 respectively, meter processor 7 can read the two signal on CAN signal platform 9, after receiving signal, meter processor 7 is according to the proportionate relationship between actual size and the two signal theory maximum of the two signal, determine the height of bright fringes in front wheel torque 11 and trailing wheel moment of torsion 12, thus driven instrument liquid crystal display screen 8 by meter processor 7, instrument liquid crystal display screen 8 there will be column ratio chart.
See Fig. 3, front wheel torque 11 and trailing wheel moment of torsion 12 to be driven by " engine output torque Ttq " and " torque management device output torque targets value Te " signal respectively, the 4 wheel driven wheel position of the position simulation car load of four block diagrams.
See Fig. 2, after user have selected 4 wheel driven moment of torsion display pattern by 4 wheel driven switch 1, corresponding 4 wheel driven pattern 2WD, AUTO or Lock signal are i.e. transfused to give 4 wheel driven controller 5, corresponding 4 wheel driven mode signal is sent on CAN communication platform 9 by 4 wheel driven controller 5, meter processor 7 can read this signal on CAN signal platform 9, after receiving signal, meter processor 7, according to the 4 wheel driven mode signal read, drives instrument liquid crystal display screen 8.In Fig. 3, the blank space 10 on instrument liquid crystal display screen 8 there will be the corresponding text prompt about 4 wheel driven pattern.
Claims (3)
1. a four-wheel drive cars moment of torsion Real time dynamic display system, including: 4 wheel driven switch (1), 4 wheel driven controller (5) and engine controller (6), CAN communication platform (9), meter processor (7) and instrument panel (8)；It is characterized in that:
Described 4 wheel driven switch (1) selects the instruction of 4 wheel driven pattern for receiving user, and this instruction is sent to 4 wheel driven controller (5)；
Described 4 wheel driven controller (5) is delivered to CAN communication platform (9) for 4 wheel driven mode signal and torque management device are exported torque targets value Te signal；Engine controller (6) is for being delivered to CAN communication platform (9) by engine output torque Ttq signal；
Described meter processor (7) is at CAN communication platform (9) described three signals of upper reading, and according to the proportionate relationship between torque management device output torque targets value Te and the actual size of two signals of engine output torque Ttq and the two signal theory maximum, calculate the height of column bright fringes in front wheel torque (11) and trailing wheel moment of torsion (12)；
Described instrument panel (8), for being driven by meter processor (7), shows front wheel torque (11) and four column ratio charts of trailing wheel moment of torsion (12) and the text prompt about 4 wheel driven pattern.
Four-wheel drive cars moment of torsion Real time dynamic display system the most according to claim 1, it is characterised in that the 4 wheel driven wheel position of described four column ratio charts simulation car load in position on instrument panel (8).
3. a four-wheel drive cars moment of torsion Real time dynamic display method, uses the dynamic display system that 4 wheel driven switch (1), 4 wheel driven controller (5), engine controller (6), CAN communication platform (9), meter processor (7) and instrument panel (8) are constituted；It is characterized in that comprising the following steps:
(1) 4 wheel driven switch (1) receives user and selects the instruction of 4 wheel driven pattern, and this instruction is sent to 4 wheel driven controller (5)；
(2) 4 wheel driven mode signal and torque management device are exported torque targets value Te signal and are delivered to CAN communication platform (9) by 4 wheel driven controller (5)；Engine output torque Ttq signal is delivered to CAN communication platform (9) by engine controller (6)；
(3) meter processor (7) reads these three signal from CAN communication platform (9)；
(4) meter processor (7) is according to the proportionate relationship between torque management device output torque targets value Te and the actual size of two signals of engine output torque Ttq and the two signal theory maximum, calculates the height of column bright fringes in front wheel torque (11) and trailing wheel moment of torsion (12)；
(5) result of calculation and 4 wheel driven mode signal are sent to instrument panel (8) by meter processor (7), drive instrument panel (8) display front wheel torque (11) and four column ratio charts of trailing wheel moment of torsion (12) and the text prompt about 4 wheel driven pattern.
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| CN201410735534.9A CN104477116B (en) | 2014-12-04 | 2014-12-04 | A kind of four-wheel drive cars moment of torsion Real time dynamic display system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108749747B (en) * | 2018-07-04 | 2023-08-11 | 北京汽车集团越野车有限公司 | Signal transmission system of vehicle |
| CN113928117B (en) * | 2021-03-25 | 2023-04-14 | 长城汽车股份有限公司 | Method and system for displaying torque of front axle and rear axle of four-wheel drive vehicle |
| CN114935002A (en) * | 2022-06-25 | 2022-08-23 | 北京博格华纳汽车传动器有限公司 | Overheating automatic gear shifting method, device, equipment and medium based on combined transfer case |
| CN115122932B (en) * | 2022-07-15 | 2024-04-05 | 奇瑞汽车股份有限公司 | Driving energy display method and device for four-wheel drive vehicle, vehicle and storage medium |
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| DE102006031666A1 (en) * | 2006-07-08 | 2008-01-10 | Dr.Ing.H.C. F. Porsche Ag | Automobile drive transmission, especially a four-wheel drive, registers the torque distribution between the axles and/or wheels giving the driver a visual display |
| JP4955482B2 (en) * | 2007-08-07 | 2012-06-20 | 日産自動車株式会社 | Driving force distribution control device for four-wheel drive vehicles |
| JP5315174B2 (en) * | 2009-08-28 | 2013-10-16 | 本田技研工業株式会社 | Torque display device for vehicle |
| CN102971177B (en) * | 2010-07-09 | 2015-06-10 | 日产自动车株式会社 | Vehicle display device |
| DE112012007150B4 (en) * | 2012-11-20 | 2019-03-28 | Toyota Jidosha Kabushiki Kaisha | Torque display device and vehicle with the same |
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Application publication date: 20150401 Assignee: CHONGQING CHANGAN NEW ENERGY AUTOMOBILE TECHNOLOGY Co.,Ltd. Assignor: Chongqing Changan Automobile Co.,Ltd. Contract record no.: X2021500000014 Denomination of invention: A real-time dynamic torque display system and method for 4WD vehicle Granted publication date: 20161026 License type: Common License Record date: 20211014 |