CN207093217U - The structure that a kind of engine control module is handled throttle position switch abnormal signal - Google Patents
The structure that a kind of engine control module is handled throttle position switch abnormal signal Download PDFInfo
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- CN207093217U CN207093217U CN201720436026.XU CN201720436026U CN207093217U CN 207093217 U CN207093217 U CN 207093217U CN 201720436026 U CN201720436026 U CN 201720436026U CN 207093217 U CN207093217 U CN 207093217U
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- throttle position
- signal
- output signal
- control module
- engine control
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Abstract
The utility model discloses the structure that a kind of engine control module is handled throttle position switch abnormal signal, it exports two-way throttle position signal by throttle position switch, engine control module receives the throttle position signal, the engine control module is analyzed throttle position signal described in two-way, judge the throttle position switch whether normal work, if the throttle position signal is abnormal, determine whether the source of the abnormal signal, abnormal signal described in engine control module relation amendment of throttle position signal according to two-way, ensure that engine inputs correct throttle position signal.The structure, which reasonably can handle and tackle the throttle position switch, the situation of abnormal signal all the way, ensures that vehicle can continue to normally travel, reduces vehicle trouble stroke mileage, improves the reliability and driving safety of vehicle.
Description
Technical field
It the utility model is related to processing structure of the engine control module to abnormal signal, more particularly to a kind of engine control
The structure that molding block is handled throttle position switch abnormal signal.
Background technology
Throttle is one of main devices of driver's operating and controlling vehicle.In current electronic control system, engine speed, car
The main performance index such as speed, oil consumption, discharge are all engine electronic control system modules (abbreviation ECM) according to throttle position switch
What data were controlled and adjusted.After throttle position switch breaks down, vehicle will be unable to normally travel, therefore, in oil
Two paths of signals is usually designed in the design of door position sensor, so that ECM is judged.However, regrettably almost institute at present
Some vehicles, when engine control module judges wherein throttle position switch abnormal signal all the way, engine is just taken
Counter-measure, negative and positive coping style measure is just taken, take one kind to be commonly called as the processing structure " walked lamely "." limping " pattern is exactly control hair
Motivation no longer comprehends the action of throttle, this structure is decreased obviously vehicle power, and vehicle body shake is bright with fixed rotation speed operation
Aobvious, oil consumption is sharply increased, and speed can not also be improved by being floored even if throttle.Meanwhile with the decline of dynamic property, the combustion of engine
Burning also becomes to deteriorate, and discharges acutely increase, has a strong impact on traffic safety and air quality.
Analyzed more than, it is in order to improve its reliability, but due to sending out to design two-way throttle position switch originally
The improper processing structure of motivation control module, causes throttle position switch and vehicle performance and reliability decrease.According to statistics, it is oily
In door position sensor failure, more than 90% situation is due to have in two paths of signals all the way to power supply or shorted to earth or open circuit
Caused, now, another way remains to provide normal throttle position signal.Therefore, how to ensure engine control module in oil
It is to be currently needed for solving the problems, such as that engine work can be ensured in the case of door position sensor output signal exception.
Utility model content
The utility model provides a kind of processing structure of new engine control module to abnormal signal.
The utility model provides the structure that a kind of engine control module is handled throttle position switch abnormal signal, oil
Door position sensor exports two paths of signals, i.e. the first output signal and the second output signal, the first output signal and the second output
Meet specific characteristics of signals relation between signal, engine control module receives two paths of signals, to the two-way output signal
Whether exception is judged, the abnormal conditions that the engine control module is given according to difference are repaired and handled.
Engine control module two-way output signal according to the characteristics of signals relation pair is analyzed, and is judged
Whether the two-way output signal there is exception.
The engine control module output abnormality in the case of characteristics of signals relation is unsatisfactory for indicates, for full
The situation of the foot characteristics of signals is handled by normal condition.
The engine control module is entered to the first output signal and the second output signal respectively according to the abnormal instruction
Row judges, records per whether road signal occurs exception.
For having, in the case of signal occurs abnormal all the way, abnormal signal and the signal of no exceptions occur for mark.
For having, in the case of signal occurs abnormal all the way, the engine control module stores failure code, according to described
The signal of no exceptions, it is allowed to engine work.
In the case of having two paths of signals to occur abnormal, the engine control module performs fault alarm program.
The characteristics of signals relation refers to one fixed difference of holding between first output signal and the second output signal
Value.
The characteristics of signals relation refers to one fixed ratio of holding between first output signal and the second output signal
Value.
The characteristics of signals relation refers to first output signal and the second output signal sum is equal to constant.
The beneficial effects of the utility model are：Creative sets reading circuit and each judgement in engine control module
Circuit, so as to realize the identification and processing to throttle position switch abnormal signal, and then ensure engine in throttle position
Put and still be able to normal work under sensor signal abnormal conditions.
Brief description of the drawings
Fig. 1 is the structured flowchart of present embodiment；
Fig. 2 is the schematic flow sheet of present embodiment.
Embodiment
The utility model is described in further detail below by embodiment combination accompanying drawing.
As shown in Figures 1 and 2, the structure that a kind of engine control module is handled throttle position switch abnormal signal,
Including reading circuit, governor circuit, main decision circuitry, the first decision circuitry, the second decision circuitry, execution circuit, reading circuit,
Main decision circuitry, the first decision circuitry, the second decision circuitry and execution circuit are connected with governor circuit.Reading circuit is used to read
The two-way output signal of throttle position switch is taken, the output signal can be voltage signal, and the two-way output signal is fixed respectively
Justice is the first output signal and the second output signal.Main decision circuitry includes default signal characteristic relation, and it is used for judgement
First, whether the second output signal meets signal characteristic relation.First decision circuitry is used to judge whether the first output signal is normal,
First decision circuitry can include the first predetermined voltage range, and it compares first output signal and the first predeterminated voltage model
Enclose.Second decision circuitry is used to judge whether the second output signal is normal, and second decision circuitry can include the second default electricity
Scope is pressed, it compares the second output signal and the second predetermined voltage range.Execution circuit can receive the instruction of governor circuit simultaneously
Output control voltage signal is to engine.
In accelerator, the action that throttle position switch operates the driver received at throttle is converted to electric signal,
The signal is the output signal of throttle position switch.In the present embodiment, throttle position switch operates driver
The two paths of signals of generation is exported to engine control module, respectively the first output signal U epa and the second output signal U epa2,
Meet specific characteristics of signals relation, such as the first output letter between first output signal U epa and the second output signal U epa2
A fixed difference, the output letters of the first output signal U epa and second are kept number between Uepa and the second output signal U epa2
It is constant that a fixed ratio or the first output signal U epa and the second output signal U epa2 sums are kept between number Uepa2.
Engine control module after the two-way output signal from throttle position switch is received, that is, start to judge two paths of signals it
Between whether meet predetermined characteristics of signals relation.Input for meeting characteristics of signals relation, engine control module will be by just
The processing of reason condition, performs the signal；If two paths of signals is unsatisfactory for characteristics of signals relation, illustrate that exception occurs in signal, now
Failure code should be stored, and it is abnormal specifically to judge which road signal occurs；If by judging that the first output signal U epa is normal, deposit
Store up failure code and perform the first output signal U epa, it is allowed to engine work；If the first output signal U epa is abnormal,
Then further the second output signal U epa2 is judged；If by judging that the second output signal U epa2 is normal, storage event
Hinder code and perform the second output signal U epa2, it is allowed to engine work；If the second output signal U epa2 is equally not just
Often, then failure code is stored, engine failure emergency warning lamp is lighted and performs " limping " program.
The treatable signal of the utility model engine control module institute can include：First output signal and the second output
Keep keeping between a fixed difference, the first output signal and the second output signal between signal a fixed ratio,
First output signal and the second output signal sum are equal to the situation of constant, cover the conventional throttle position switch of in the market
Signal form, multiple functional, broad covered area.
For the structure, it can realize the identification and processing to throttle position switch abnormal signal, ensure engine
Normal work in the case of throttle position switch abnormal signal, you can solve by more than 90% by throttle position switch event
Vehicle caused by barrier can not normally travel the problem of, extend the function and the scope of application of engine control module.Work as discovery
Throttle position switch signal is not to take " limping " structure the very first time when insincere, but further analyzes two paths of signals
In which is normal, and normal signal controls the operation of engine and vehicle all the way using this, when confirmation two paths of signals
" limping " pattern when abnormal, is just taken, improves the security of vehicle operation.Engine control module is by examining throttle
The characteristics of signals relation of position sensor two-way output signal judges whether throttle position switch occurs exception, judged result
It is accurate credible.Engine control module, according to the characteristics of signals of input signal, is sentenced in the case where judging to have abnormal signal
Break and the abnormal concrete signal of generation and record, ensure the integrality of the data record in engine operation process, be advantageous to tie up
Excluded when repairing abnormal.Engine control module in the case of having the abnormal signal all the way, deposit by the engine control module
Failure code is stored up, according to the signal of the no exceptions, it is allowed to engine work.
Above content is to combine specific embodiment further detailed description of the utility model, it is impossible to is assert
Specific implementation of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field
For, without departing from the concept of the premise utility, some simple deduction or replace can also be made.
Claims (1)
- A kind of 1. structure that engine control module is handled throttle position switch abnormal signal, it is characterised in that：Including with In read the reading circuit of first, second output signal of throttle position switch, governor circuit, for judging described first, Whether the second output signal meets the main decision circuitry of signal characteristic relation, for judging the first output signal whether normal One decision circuitry, for judging whether normal second decision circuitry of the second output signal and execution circuit, the reading circuit, Main decision circuitry, the first decision circuitry, the second decision circuitry and execution circuit are connected with the governor circuit, the main judgement Circuit includes default signal characteristic relation；First decision circuitry includes the first predetermined voltage range, and it more described One output signal and the first predetermined voltage range；Second decision circuitry includes the second predetermined voltage range, and it is more described Second output signal and the second predetermined voltage range；The execution circuit receives the instruction of the governor circuit and output control electricity Signal is pressed to engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720436026.XU CN207093217U (en) | 2017-04-24 | 2017-04-24 | The structure that a kind of engine control module is handled throttle position switch abnormal signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720436026.XU CN207093217U (en) | 2017-04-24 | 2017-04-24 | The structure that a kind of engine control module is handled throttle position switch abnormal signal |
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| CN207093217U true CN207093217U (en) | 2018-03-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110412971A (en) * | 2019-06-11 | 2019-11-05 | 汉腾汽车有限公司 | A kind of ECU detection method |
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2017
- 2017-04-24 CN CN201720436026.XU patent/CN207093217U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110412971A (en) * | 2019-06-11 | 2019-11-05 | 汉腾汽车有限公司 | A kind of ECU detection method |
| CN110412971B (en) * | 2019-06-11 | 2021-05-25 | 万专知识产权运营有限公司 | ECU detection method |
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