CN106930841A - Electronic Throttle Control crash protection system - Google Patents
Electronic Throttle Control crash protection system Download PDFInfo
- Publication number
- CN106930841A CN106930841A CN201710102098.5A CN201710102098A CN106930841A CN 106930841 A CN106930841 A CN 106930841A CN 201710102098 A CN201710102098 A CN 201710102098A CN 106930841 A CN106930841 A CN 106930841A
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- Prior art keywords
- module
- monitoring
- electronic throttle
- processor
- control
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
- F02D11/06—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance
- F02D11/10—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
- F02D11/06—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance
- F02D11/10—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
- F02D11/107—Safety-related aspects
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The present invention relates to a kind of crash protection system of Electronic Throttle Control, mainly it is made up of engine control module, monitoring module, processor selftest module, primary processor and outside independent monitoring module；Engine control module is made up of torque limit module and diagnostic module, the diagnostic module is connected with E-Gas position sensor, TPS and actuator signal respectively, the monitoring module is connected with engine power output block, the signal of the collection angle of ignition, actual fuel injection amount, air inflow, pedal and engine speed, the torque monitoring of monitoring module torque limit module；The processor selftest module is connected with primary processor signal；The independent monitoring module in described outside is connected with the control of major power device, the running status for monitoring processor selftest module.Electronic throttle may be out of control when failing occurs in system for throttle control, and causes engine to produce beyond desired moment of torsion.
Description
Technical field
The present invention relates to a kind of crash protection system for Electronic Throttle Control, it is adaptable to be mounted with electronic throttle
Engine electric-controlled system, prevent due to the electronic throttle vehicle that causes of failure it is unexpected it is anxious accelerate, be occupant and pedestrains safety
Provide safeguard.
Background technology
Electronic throttle is used in third generation direct spray petrol engine in cylinder electric-control system, torque output is based on throttle control
System air inflow, if there is signal (actuator) mistake, software failure or hardware failure, electronic throttle may lose
Control, causes engine to produce beyond desired moment of torsion, causes the generation of dangerous situation, Electronic Throttle Control crash protection system
The generation of such case can effectively be prevented.
Carry out the control of redundancy more than current existing protection system to electronic throttle using two sets of independent hardware.Two sets
Control system calculates the control data to electronic throttle simultaneously, and only when output request is consistent, Electronic Throttle Control is
Effectively.Although electronic throttle functional safety can be ensured to a certain extent, the more increase system cost of meeting, and by
Identical software is used in two sets of hardware, if so defect present in software can not be detected.
The content of the invention
The present invention provides a kind of crash protection system of Electronic Throttle Control, goes out for the system based on throttle control
Electronic throttle may be out of control when existing software failure or hardware failure, causes engine to produce beyond desired moment of torsion, prevents
Cause danger situation.
The purpose of the present invention is achieved through the following technical solutions：
A kind of crash protection system of Electronic Throttle Control, mainly by engine control module, monitoring module, processor
Selftest module, primary processor and outside independent monitoring module are constituted；The engine control module is by torque limit module and examines
Disconnected module composition, the diagnostic module respectively with E-Gas position sensor, TPS and actuator signal
Connection, is limited by torque limit module when the fault-signal of efp, electronic throttle and brake is detected and sprayed
The power output of oily device, electronics moral and air throttle actuator；The monitoring module is connected with engine power output block, adopts
The signal of the collection angle of ignition, actual fuel injection amount, air inflow, pedal and engine speed, monitoring module is also connected with primary processor, leads to
Cross primary processor to obtain actual torque to the treatment for gathering signal and allow moment of torsion and compare, complete the torsion to torque limit module
Monitoring of torque；The processor selftest module is connected with primary processor signal；The independent monitoring module in described outside and major power
Device control connection, the running status for monitoring processor selftest module.
Described monitoring module is mainly torque monitoring, and reality output moment of torsion is calculated by simplified Model Independent, leads to
Cross simplified Model Independent ground and calculate permission output torque, compare the moment of torsion and the moment of torsion for allowing output of reality output, work as detection
Torque output is limited when being transfinited to moment of torsion.
Described processor selftest module with monitoring primary processor signal be connected, primary processor including memory, bus, when
Clock, instruction control unit, AD conversion unit etc., once detecting hardware fault, then reset primary processor.
Described diagnostic module is examined including efp diagnostic module, electronic throttle diagnostic module and brake signal
Disconnected module.
Described processor selftest module includes：Check that main processor memory state includes that the memory of ROM and RAM is supervised
Control module, the analog-to-digital conversion monitoring module for checking primary processor AD conversion unit function；Check the instruction system of primary processor
Can no instruction set monitoring module working properly；：Determine whether primary processor can correctly call the journey of key procedure of FMO
Sequence performs monitoring module；Processor selftest will be attempted removing erroneous resets management module after finding mistake by system reset；：Outward
The communication management module that portion's monitoring module passes through SPI communication management real-time monitoring primary processor self-inspection states.
The running status of the independent monitoring module real-time monitoring processor selftest in described outside, if it find that primary processor is certainly
Inspection program run-time error, outside monitoring module will independently close major power device, and (air throttle, fuel injector and igniting drive core
Piece) enable, so as to close engine, it is ensured that vehicle safety.
Beneficial effects of the present invention are as follows：
Electronic throttle has been used in directly jetting gasoline engine electric-control system, in order to ensure the reliability of electronic throttle operation, this
The running status that the crash protection system for providing is capable of real-time monitoring Electronic Throttle Control related software/hardware is invented, in detection
Electronic throttle is closed during to abnormality, engine is closed if necessary, to ensure safety.
Brief description of the drawings
Fig. 1 is the crash protection system schematic diagram of Electronic Throttle Control of the invention；
Fig. 2 is the schematic diagram of the engine control module of the crash protection system of Electronic Throttle Control of the invention；
Fig. 3 is that the monitoring module of the engine control module of the crash protection system of Electronic Throttle Control of the invention is former
Reason figure；
Fig. 4 is that the oil mass monitoring of the engine control module of the crash protection system of Electronic Throttle Control of the invention is former
Reason figure；
Fig. 5 is the processor selftest of the engine control module of the crash protection system of Electronic Throttle Control of the invention
Module principle figure.
Specific embodiment
The specific embodiment of patent that the invention will now be described in detail with reference to the accompanying drawings.The present invention provides a kind of electronic throttle
The crash protection system of control, mainly by engine control module, monitoring module, processor selftest module, primary processor and outer
Portion's independence monitoring module is constituted；The engine control module is made up of torque limit module and diagnostic module, the diagnosis mould
Block is connected with E-Gas position sensor, TPS and actuator signal respectively, is detecting E-Gas
Fuel injector, electronics moral and air throttle are limited by torque limit module during the fault-signal of pedal, electronic throttle and brake
The power output of actuator；The monitoring module is connected with engine power output block, collection the angle of ignition, actual fuel injection amount,
The signal of air inflow, pedal and engine speed, monitoring module is also connected with primary processor, by primary processor to collection signal
Treatment obtain actual torque and allow moment of torsion and to compare, complete the torque monitoring to torque limit module；The processor is certainly
Inspection module is connected with primary processor signal；The independent monitoring module in described outside is connected with the control of major power device, for supervising
Survey the running status of processor selftest module.
As shown in Figures 1 and 2, the failure in engine control module in the crash protection system that the present invention is provided is protected
Protective function is realized by torque limit module and diagnostic module.Described engine control module is connected with monitoring actuator, uses
In the fault-signal of monitoring actuator；Described monitoring module is connected with engine power output block, for monitoring moment of torsion, meter
Calculate and compare reality output moment of torsion and allow output torque；The independent monitoring module in described outside controls to connect with major power device
Connect；Described processor selftest module is used to monitor master controller；The independent monitoring module in described outside is used to monitor processor
Selftest module.Engine control module includes torque limit module and diagnostic module, with fail safe function, diagnostic module bag
Include diagnostic module, electronic throttle diagnostic module and the brake signal module of efp；Processor selftest module and prison
Survey the connection of master controller signal；Outside independent monitoring module is connected with primary processor signal.
Described monitoring module is mainly torque monitoring, and reality output moment of torsion is calculated by simplified Model Independent, leads to
Cross simplified Model Independent ground and calculate permission output torque, compare the moment of torsion and the moment of torsion for allowing output of reality output, work as detection
Torque output is limited when being transfinited to moment of torsion.On the basis of torque model, simplified according to certain rule, set up simpler
Model calculate allow moment of torsion, torque output is limited, torque limit is by the influence to air inflow and the angle of ignition.
As shown in figure 4, relative distributive value, relative reasonableness check between air inflow and air-fuel ratio are monitored in monitoring modular being turned round for actual
Square is calculated and provides reliable information on load.Actual torque output depends primarily on the load (with respect to air inflow) of current system, is
Relative air inflow to system is monitored, and introduces oil mass monitoring.In the gasoline direct system of LAMBDA=1, relatively
There is fixed range in air inflow, and depend primarily on air-fuel ratio control with the proportioning of relative distributive value.Therefore this three is carried out
Compare, if reasonableness check passes through, it can be assumed that relative air inflow signal rationally, can be used for torque arithmetic at present；It is no
Then there is mistake in explanation wherein at least all the way, it is impossible to ensure that follow-up torque monitoring can be performed correctly, therefore oil mass monitoring inspection
Limitation engine power is exported after measuring mistake, to ensure vehicle safety.
Described diagnostic module is examined including efp diagnostic module, electronic throttle diagnostic module and brake signal
Disconnected module；
The course of work of described efp diagnostic module：Efp uses dual potentineter, to it
Monitoring seeks to ensure that the operator torque demands of pedal reflection are correct that the main contents of diagnosis have：The maximum of voltage signal, most
Sync check, the reasonableness check between gas pedal and brake signal between small range inspection, two-way voltage signal.Treatment
Process approach is：One E-Gas position sensor signal failure：Torque demand input be restricted, engine speed with
Gas pedal changes, and engine output power is restricted, and max. speed is not as the past, and acceleration is poor, and trouble light is lighted.
Two E-Gas position sensor signal failures：Torque demand input is restricted to minimum value, and engine speed is steady
A certain fixed rotating speed, and the rotating speed are scheduled on more than warm idle under normal circumstances, the angle change of efp is to turning
Speed is lighted without any influence, trouble light.
The course of work of described electronic throttle diagnostic module：Electronic throttle uses dual potentineter, the monitoring to it
Seek to ensure that the actual aperture of air throttle is consistent with the target aperture of default, the main contents of diagnosis have：Position sensing
The maximum of device voltage signal, minimum zone inspection；Sync check between two paths of signals；Actual aperture and the target of air throttle are opened
Degree consistency check；Width-modulation pulse inspection to controlling stepper motor.Processing procedure method is：One throttle position is passed
Sensor signal failure：Engine output power is restricted, and max. speed is not as the past, and acceleration is poor, and trouble light is lighted；
Two throttle position sensor signal failures：Electronic throttle is powered off, and a fixed aperture is in all the time；Idling speed is carried
Height, engine speed changes with gas pedal, and engine operation is steady not as normal condition, is short of power, and trouble light is lighted；
Air throttle actuator failures, including open spring failure；Return spring failure；Actual aperture is inconsistent with target aperture, solar term
Gate control signal transfinites (actuator or output signal failure)：Electronic throttle is powered off, and a fixed aperture is in all the time；Idling
Rotating speed is improved, and engine speed changes with gas pedal, and engine operation is steady not as normal condition, is short of power, failure
Lamp is lighted.
The course of work of described brake signal diagnostic module：Dual-path brake signal, the electricity at synchronization action, brake switch
Pressure diagnosis, the diagnosis of acceleration/deceleration brake signal.Fault handling method is：When brake signal failure, then braking letter is thought in output
Number input, reduce speed.
As shown in figure 3, monitoring module is the power output for monitoring engine：By independent calculating engine reality output
Moment of torsion and current maximum permissible torque are simultaneously compared, it is ensured that engine torque output is not transfinited.By simplified Model Independent
Ground calculate reality output moment of torsion, permission output torque is calculated by simplified Model Independent, compare reality output moment of torsion and
The moment of torsion of output is allowed, torque output is limited when detecting moment of torsion and transfiniting；When vehicle is in failure limping pattern, moment of torsion prison
Control is no longer carried out (now engine power input is no longer presented as operator demand).Now the rotating speed of engine will be monitored,
If when vehicle is walked lamely, engine speed transfinites, and engine will be closed, to ensure vehicle safety.
As shown in figure 5, processor selftest module is connected with monitoring primary processor signal, the operation of security monitor program can be received
To the influence of host controller hardware resource status.If the hardware resource of primary processor fails, such as memory, bus,
The random hardware failure such as clock, instruction control unit, AD conversion unit, can cause function monitor program execution error, lead
Potential danger situation is caused to occur, the state of the primary processor hardware of influence function monitor operation.
The course of work of described processor selftest module is as follows：Memory is monitored：Check main processor memory state
Including ROM (program storage) and RAM (random access memory)；Analog-to-digital conversion is monitored：Check primary processor AD conversion unit work(
Energy；Instruction set is monitored：Check that the instruction system of primary processor can be no working properly；Program performs monitoring：Determining primary processor is
The no key procedure that can correctly call FMO (function monitor)；Reset management：Processor selftest will be by being after finding mistake
System resets and attempts removing mistake；Communication management：Outside monitoring module passes through SPI communication management real-time monitoring primary processor self-inspection shapes
State.
The independent monitoring module course of work in described outside is as follows：Control unit of engine outside independent monitoring mould after resetting
Block carries out self-inspection first, if self-inspection fails to be enabled by will close all power devices, while it is multiple to control primary processor to enter
Position state；Pass through the running status of PORT COM monitor in real time primary processor if if self-inspection.Outside monitoring module is real-time
The running status of primary processor self-inspection is monitored, if it find that primary processor self-check program run-time error, outside monitoring module will be only
On the spot close major power device (air throttle, fuel injector and igniting driving chip) to enable, so as to close engine, it is ensured that vehicle
Safety.
Claims (4)
1. a kind of crash protection system of Electronic Throttle Control, it is characterised in that：Mainly by engine control module, monitoring mould
Block, processor selftest module, primary processor and outside independent monitoring module are constituted；
The engine control module is made up of torque limit module and diagnostic module, the diagnostic module respectively with E-Gas
Position sensor, TPS and actuator signal connection, detect efp, electronic throttle and
The power output of fuel injector, electronics moral and air throttle actuator is limited during the fault-signal of brake by torque limit module；
The monitoring module is connected with engine power output block, collection the angle of ignition, actual fuel injection amount, air inflow, pedal and
The signal of engine speed, monitoring module is also connected with primary processor, obtains real to the treatment for gathering signal by primary processor
Border moment of torsion and allow moment of torsion and to compare, complete the torque monitoring to torque limit module；
The processor selftest module is connected with primary processor signal；
The independent monitoring module in described outside is connected with the control of major power device, the operation for monitoring processor selftest module
State.
2. a kind of crash protection system of Electronic Throttle Control as claimed in claim 1, it is characterised in that：Described main place
Reason device includes memory, bus, clock, instruction control unit and AD conversion unit.
3. a kind of crash protection system of Electronic Throttle Control as claimed in claim 1, it is characterised in that：Described diagnosis
Module includes efp diagnostic module, electronic throttle diagnostic module and brake signal diagnostic module.
4. a kind of crash protection system of Electronic Throttle Control as claimed in claim 1, it is characterised in that：Described treatment
Device selftest module includes：Check that main processor memory state includes the memory monitoring module of ROM and RAM, checks main process task
The analog-to-digital conversion monitoring module of device AD conversion unit function；Check that the instruction system of primary processor can no instruction working properly
Collection monitoring module；：Determine whether primary processor can correctly call the program of the key procedure of FMO to perform monitoring module；Place
The self-inspection of reason device will be attempted removing erroneous resets management module after finding mistake by system reset；：Outside monitoring module passes through SPI
The communication management module of communication management real-time monitoring primary processor self-inspection state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710102098.5A CN106930841A (en) | 2017-02-24 | 2017-02-24 | Electronic Throttle Control crash protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710102098.5A CN106930841A (en) | 2017-02-24 | 2017-02-24 | Electronic Throttle Control crash protection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106930841A true CN106930841A (en) | 2017-07-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710102098.5A Pending CN106930841A (en) | 2017-02-24 | 2017-02-24 | Electronic Throttle Control crash protection system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108572600A (en) * | 2018-06-14 | 2018-09-25 | 上海牛仁汽车有限公司 | Automobile-used microcontroller and its signal control method |
| CN109085418A (en) * | 2018-09-06 | 2018-12-25 | 洛阳市黄河软轴控制器股份有限公司 | E-Gas detection method and E-Gas detection system and equipment |
| CN109779767A (en) * | 2017-11-14 | 2019-05-21 | 通用汽车环球科技运作有限责任公司 | Method and controller for the engine torque control in the vehicle during defaulting air throttle situation |
| CN110632430A (en) * | 2019-10-17 | 2019-12-31 | 潍柴西港新能源动力有限公司 | Test system and test method for simulating anti-backfire capability of throttle valve |
| CN111503260A (en) * | 2020-04-20 | 2020-08-07 | 盛瑞传动股份有限公司 | Method and device for regulating oil pressure of gearbox, electronic equipment and storage medium |
| CN113062812A (en) * | 2021-04-26 | 2021-07-02 | 中国第一汽车股份有限公司 | Engine safety monitoring and detecting method, device, medium and electronic equipment |
| CN113353091A (en) * | 2021-05-21 | 2021-09-07 | 龙岩学院 | Electronic control method and control system with redundancy function |
| CN117806197A (en) * | 2022-09-26 | 2024-04-02 | 比亚迪股份有限公司 | Motor controller, main control chip thereof and motor rotor angle acquisition method |
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| CN101408136A (en) * | 2007-10-01 | 2009-04-15 | 通用汽车环球科技运作公司 | Secured throttle position in a coordinated torque control system |
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Cited By (10)
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| CN109779767A (en) * | 2017-11-14 | 2019-05-21 | 通用汽车环球科技运作有限责任公司 | Method and controller for the engine torque control in the vehicle during defaulting air throttle situation |
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| CN113062812A (en) * | 2021-04-26 | 2021-07-02 | 中国第一汽车股份有限公司 | Engine safety monitoring and detecting method, device, medium and electronic equipment |
| CN113062812B (en) * | 2021-04-26 | 2022-08-05 | 中国第一汽车股份有限公司 | Engine safety monitoring and detecting method, device, medium and electronic equipment |
| CN113353091A (en) * | 2021-05-21 | 2021-09-07 | 龙岩学院 | Electronic control method and control system with redundancy function |
| CN117806197A (en) * | 2022-09-26 | 2024-04-02 | 比亚迪股份有限公司 | Motor controller, main control chip thereof and motor rotor angle acquisition method |
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Application publication date: 20170707 |