CN205805742U - Electric injection system without cylinder head temperature sensor - Google Patents
Electric injection system without cylinder head temperature sensor Download PDFInfo
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- CN205805742U CN205805742U CN201620304998.9U CN201620304998U CN205805742U CN 205805742 U CN205805742 U CN 205805742U CN 201620304998 U CN201620304998 U CN 201620304998U CN 205805742 U CN205805742 U CN 205805742U
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Abstract
This utility model provides a kind of without cylinder head temperature sensor electric injection system, including intake air temperature sensor, air inlet pressure sensor, speed probe and electric spraying control unit, described electric spraying control unit includes the first lookup unit, the second lookup unit, the 3rd lookup unit, the 4th lookup unit, the 5th lookup unit, the first sum unit and the first comparing unit.Owing to have employed technique scheme, the advantage that this utility model has simple in construction, it realizes in the case of not increasing other sensors such as cylinder head temperature sensor and not revising the premise of hardware, it is calculated head temperature, it is to avoid revise the produced series of problems of primary engine cylinder head mould tool by the simulation of tabling look-up of the intake air temperature sensor that electric injection system is carried, air inlet pressure sensor and speed probe.
Description
Technical field
This utility model belongs to electric injection system and controls technical field, particularly a kind of without cylinder head temperature sensor EFI system
System.
Background technology
At present, all use cylinder head temperature sensor to measure head temperature signal, cylinder in put-put electric injection system
Head temperature signal calculates for electric injection system air inflow, starts and idling fuel oil air inlet compensation.But cylinder head temperature sensor needs peace
Being contained in the lee face of engine cylinder head, increasing installing hole needs to revise primary engine cylinder head mould tool, increases EM Engine Modification mould
Cost, and install inconvenience, too increase the cost of electric injection system simultaneously.
Utility model content
The purpose of this utility model is to provide the electric injection system without cylinder head temperature sensor of a kind of simple in construction, and it realizes
In the case of not increasing other sensors such as cylinder head temperature sensor and not revising the premise of hardware, by electric injection system is carried
The simulation that carries out tabling look-up of intake air temperature sensor, air inlet pressure sensor and speed probe be calculated head temperature, it is to avoid
Revise the produced series of problems of primary engine cylinder head mould tool.
The purpose of this utility model is realized by such technical scheme, and it includes intake air temperature sensor, air inlet
Pressure transducer, speed probe and electric spraying control unit, described electric spraying control unit includes the first lookup unit, second tables look-up
Unit, the 3rd lookup unit, the 4th lookup unit, the 5th lookup unit, the first sum unit and the first comparing unit；Wherein,
Described intake air temperature sensor gathers intake air temperature signals, transmits intake air temperature signals to electric spraying control unit；
Described air inlet pressure sensor gathers boost pressure signal, transmits boost pressure signal to electric spraying control unit；
Described speed probe gathers tach signal, transmits tach signal to electric spraying control unit；
Described first lookup unit obtains by tabling look-up giving tacit consent to head temperature according to receiving intake air temperature signals；
Described second lookup unit obtains head temperature variable quantity according to receiving intake air temperature signals by tabling look-up；
Described 3rd lookup unit obtains head temperature according to receiving boost pressure signal and tach signal by tabling look-up
Variable quantity；
Described 4th lookup unit obtains head temperature variable quantity according to acquiescence head temperature by tabling look-up；
Described 5th lookup unit obtains a cylinder head according to receiving boost pressure signal and tach signal by tabling look-up
Temperature maximum T1；
Described first sum unit obtains being tabled look-up by the second lookup unit, the 3rd lookup unit and the 4th lookup unit
Head temperature variable quantity carries out summation with acquiescence head temperature and obtains head temperature T2；
Described first comparing unit compares the size of T1 and T2, exports smaller value.
This utility model by intake air temperature sensor gather intake air temperature signals, by air inlet pressure sensor gather into
Atmospheric pressure signal, gathers tach signal by speed probe.First lookup unit is passed through according to receiving intake air temperature signals
Tabling look-up and obtain an acquiescence head temperature, the second lookup unit obtains a cylinder according to receiving intake air temperature signals by tabling look-up
Head temperature variation, the 3rd lookup unit obtains a cylinder head according to receiving boost pressure signal and tach signal by tabling look-up
Temperature variation, the 4th lookup unit obtains head temperature variable quantity according to acquiescence head temperature by tabling look-up, and the 5th tables look-up list
Unit obtains a head temperature maximum of T 1 according to receiving boost pressure signal and tach signal by tabling look-up.
First sum unit is tabled look-up the cylinder head obtained to by the second lookup unit, the 3rd lookup unit and the 4th lookup unit
Temperature variation carries out summation with acquiescence head temperature and obtains head temperature T2.
First comparing unit compares the size of T1 and T2, exports smaller value, and this smaller value is output head temperature.
This utility model realizes not increasing other sensors such as cylinder head temperature sensor and not revising the premise feelings of hardware
Under condition, tabled look-up mould by the intake air temperature sensor that electric injection system is carried, air inlet pressure sensor and speed probe
Intend being calculated head temperature, it is to avoid revise primary engine cylinder head mould tool, cost-effective.
In this utility model, the list data etc. used in lookup unit is the data drawn after many experiments is tested.
In this utility model, the 3rd lookup unit and the 5th lookup unit are that two dimension is tabled look-up, and are equivalent to boost pressure signal and are
X-axis, tach signal is Y-axis, one group of admission pressure head temperature variable quantity corresponding with tach signal and a head temperature
Maximum of T 1.
Sensor acquisition signal in this utility model is Real-time Collection, and lookup unit is according to the signal of sensor acquisition
Table look-up in real time.
Further, described system also includes ambient temperature sensor, the second comparing unit, intake air temperature rate calculations list
Unit, the 3rd comparing unit, the 6th lookup unit and the second sum unit；Wherein,
Described ambient temperature sensor acquisition ambient temperature signal, transmits ambient temperature signal to electric spraying control unit；
Described second comparing unit compares the size of ambient temperature and intake air temperature；
If intake air temperature is equal to ambient temperature, then judge that electromotor is as cold start-up；
If intake air temperature is more than ambient temperature, then judge that electromotor is as restarting；
Described intake air temperature rate calculation unit calculates the rate of change of intake air temperature；
Described 3rd comparing unit compares the size of intake air temperature rate of change and scheduled rate；
If intake air temperature reduces speed is more than or equal to preset value, then it is judged to that long parking heat engine is restarted；
If intake air temperature reduces speed is less than preset value, then it is judged to that short parking heat engine is restarted, now, the described 6th
Lookup unit obtains a head temperature offset according to intake air temperature by tabling look-up, and described second sum unit is to described cylinder head temperature
Degree offset is sued for peace with acquiescence head temperature value.
Owing to have employed technique scheme, this utility model has the advantage of simple in construction, and it realizes not increasing cylinder
Head other sensors such as temperature sensor and in the case of not revising the premise of hardware, by the intake air temperature carrying electric injection system
The simulation that carries out tabling look-up of sensor, air inlet pressure sensor and speed probe is calculated head temperature, it is to avoid revise primary dynamic
Series of problems produced by machine cylinder head mould.
Accompanying drawing explanation
Fig. 1 is theory structure schematic diagram of the present utility model.
Detailed description of the invention
For the technological means making this utility model realize, creation characteristic, reach purpose and be easy to understand with effect, under
Face combines and is specifically illustrating, and this utility model is expanded on further.
As it is shown in figure 1, this utility model includes intake air temperature sensor, air inlet pressure sensor, speed probe and electricity
Spray control unit, described electric spraying control unit includes the first lookup unit, the second lookup unit, the 3rd lookup unit, the 4th looks into
Table unit, the 5th lookup unit, the first sum unit and the first comparing unit；Wherein,
Described intake air temperature sensor gathers intake air temperature signals, transmits intake air temperature signals to electric spraying control unit；
Described air inlet pressure sensor gathers boost pressure signal, transmits boost pressure signal to electric spraying control unit；
Described speed probe gathers tach signal, transmits tach signal to electric spraying control unit；
Described first lookup unit obtains by tabling look-up giving tacit consent to head temperature according to receiving intake air temperature signals；
Described second lookup unit obtains head temperature variable quantity according to receiving intake air temperature signals by tabling look-up；
Described 3rd lookup unit obtains head temperature according to receiving boost pressure signal and tach signal by tabling look-up
Variable quantity；
Described 4th lookup unit obtains head temperature variable quantity according to acquiescence head temperature by tabling look-up；
Described 5th lookup unit obtains a cylinder head according to receiving boost pressure signal and tach signal by tabling look-up
Temperature maximum T1；
Described first sum unit obtains being tabled look-up by the second lookup unit, the 3rd lookup unit and the 4th lookup unit
Head temperature variable quantity carries out summation with acquiescence head temperature and obtains head temperature T2；
Described first comparing unit compares the size of T1 and T2, exports smaller value.
This utility model by intake air temperature sensor gather intake air temperature signals, by air inlet pressure sensor gather into
Atmospheric pressure signal, gathers tach signal by speed probe.First lookup unit is passed through according to receiving intake air temperature signals
Tabling look-up and obtain an acquiescence head temperature, the second lookup unit obtains a cylinder according to receiving intake air temperature signals by tabling look-up
Head temperature variation, the 3rd lookup unit obtains a cylinder head according to receiving boost pressure signal and tach signal by tabling look-up
Temperature variation, the 4th lookup unit obtains head temperature variable quantity according to acquiescence head temperature by tabling look-up, and the 5th tables look-up list
Unit obtains a head temperature maximum of T 1 according to receiving boost pressure signal and tach signal by tabling look-up.
First sum unit is tabled look-up the cylinder head obtained to by the second lookup unit, the 3rd lookup unit and the 4th lookup unit
Temperature variation carries out summation with acquiescence head temperature and obtains head temperature T2.
First comparing unit compares the size of T1 and T2, exports smaller value, and this smaller value is output head temperature.
This utility model realizes not increasing other sensors such as cylinder head temperature sensor and not revising the premise feelings of hardware
Under condition, tabled look-up mould by the intake air temperature sensor that electric injection system is carried, air inlet pressure sensor and speed probe
Intend being calculated head temperature, it is to avoid revise primary engine cylinder head mould tool, cost-effective.
In this utility model, the list data etc. used in lookup unit is the data drawn after many experiments is tested.
In this utility model, the 3rd lookup unit and the 5th lookup unit are that two dimension is tabled look-up, and are equivalent to boost pressure signal and are
X-axis, tach signal is Y-axis, one group of admission pressure head temperature variable quantity corresponding with tach signal and a head temperature
Maximum of T 1.
Sensor acquisition signal in this utility model is Real-time Collection, and lookup unit is according to the signal of sensor acquisition
Table look-up in real time.
As it is shown in figure 1, described system also includes ambient temperature sensor, the second comparing unit, intake air temperature rate calculations
Unit, the 3rd comparing unit, the 6th lookup unit and the second sum unit；Wherein,
Described ambient temperature sensor acquisition ambient temperature signal, transmits ambient temperature signal to electric spraying control unit；
Described second comparing unit compares the size of ambient temperature and intake air temperature；
If intake air temperature is equal to ambient temperature, then judge that electromotor is as cold start-up；
If intake air temperature is more than ambient temperature, then judge that electromotor is as restarting；
Described intake air temperature rate calculation unit calculates the rate of change of intake air temperature；
Described 3rd comparing unit compares the size of intake air temperature rate of change and scheduled rate；
If intake air temperature reduces speed is more than or equal to preset value, then it is judged to that long parking heat engine is restarted；
If intake air temperature reduces speed is less than preset value, then it is judged to that short parking heat engine is restarted, now, the described 6th
Lookup unit obtains a head temperature offset according to intake air temperature by tabling look-up, and described second sum unit is to described cylinder head temperature
Degree offset is sued for peace with acquiescence head temperature value.
Specifically, when judging electromotor as cold start-up, the acquiescence head temperature initial value that intake air temperature is tabled look-up obtained is not
Become.When being judged to that long parking heat engine is restarted, the acquiescence head temperature initial value that intake air temperature is tabled look-up obtained is constant.Work as judgement
When restarting for short parking heat engine, described head temperature offset is asked by the second sum unit with acquiescence head temperature value
With, summation income value is acquiescence head temperature value.
In this utility model, the first lookup unit, the second lookup unit, the 3rd lookup unit, the 4th lookup unit, the 5th
Lookup unit, the 6th lookup unit, the first sum unit, the second sum unit, the first comparing unit, the second comparing unit,
Three comparing units and intake air temperature rate calculation unit all can be realized by existing program.
These are only embodiment of the present utility model, not thereby limit the scope of the claims of the present utility model, every profit
The equivalent structure made by this utility model description and accompanying drawing content, is directly or indirectly used in other relevant technology necks
Territory, the most in like manner within scope of patent protection of the present utility model.
Claims (2)
1. without cylinder head temperature sensor electric injection system, it is characterised in that include intake air temperature sensor, air inlet pressure sensor,
Speed probe and electric spraying control unit, described electric spraying control unit includes the first lookup unit, the second lookup unit, the 3rd looks into
Table unit, the 4th lookup unit, the 5th lookup unit, the first sum unit and the first comparing unit；Wherein,
Described intake air temperature sensor gathers intake air temperature signals, transmits intake air temperature signals to electric spraying control unit；
Described air inlet pressure sensor gathers boost pressure signal, transmits boost pressure signal to electric spraying control unit；
Described speed probe gathers tach signal, transmits tach signal to electric spraying control unit；
Described first lookup unit obtains by tabling look-up giving tacit consent to head temperature according to receiving intake air temperature signals；
Described second lookup unit obtains head temperature variable quantity according to receiving intake air temperature signals by tabling look-up；
Described 3rd lookup unit obtains head temperature change according to receiving boost pressure signal and tach signal by tabling look-up
Amount；
Described 4th lookup unit obtains head temperature variable quantity according to acquiescence head temperature by tabling look-up；
Described 5th lookup unit obtains head temperature maximum according to receiving boost pressure signal and tach signal by tabling look-up
Value T1；
Described first sum unit is tabled look-up the cylinder head obtained to by the second lookup unit, the 3rd lookup unit and the 4th lookup unit
Temperature variation carries out summation with acquiescence head temperature and obtains head temperature T2；
Described first comparing unit compares the size of T1 and T2, exports smaller value.
2. as claimed in claim 1 without cylinder head temperature sensor electric injection system, it is characterised in that described system also includes the external world
Temperature sensor, the second comparing unit, intake air temperature rate calculation unit, the 3rd comparing unit, the 6th lookup unit and second
Sum unit；Wherein,
Described ambient temperature sensor acquisition ambient temperature signal, transmits ambient temperature signal to electric spraying control unit；
Described second comparing unit compares the size of ambient temperature and intake air temperature；
If intake air temperature is equal to ambient temperature, then judge that electromotor is as cold start-up；
If intake air temperature is more than ambient temperature, then judge that electromotor is as restarting；
Described intake air temperature rate calculation unit calculates the rate of change of intake air temperature；
Described 3rd comparing unit compares the size of intake air temperature rate of change and scheduled rate；
If intake air temperature reduces speed is more than or equal to preset value, then it is judged to that long parking heat engine is restarted；
If intake air temperature reduces speed is less than preset value, then it is judged to that short parking heat engine is restarted, described 6th lookup unit
Obtaining a head temperature offset according to intake air temperature by tabling look-up, described second sum unit is to described head temperature offset
Sue for peace with acquiescence head temperature value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620304998.9U CN205805742U (en) | 2016-04-13 | 2016-04-13 | Electric injection system without cylinder head temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620304998.9U CN205805742U (en) | 2016-04-13 | 2016-04-13 | Electric injection system without cylinder head temperature sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205805742U true CN205805742U (en) | 2016-12-14 |
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ID=58144141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620304998.9U Active CN205805742U (en) | 2016-04-13 | 2016-04-13 | Electric injection system without cylinder head temperature sensor |
Country Status (1)
| Country | Link |
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| CN (1) | CN205805742U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110621866A (en) * | 2017-05-26 | 2019-12-27 | 三菱电机株式会社 | Temperature prediction device and temperature prediction method for internal combustion engine |
-
2016
- 2016-04-13 CN CN201620304998.9U patent/CN205805742U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110621866A (en) * | 2017-05-26 | 2019-12-27 | 三菱电机株式会社 | Temperature prediction device and temperature prediction method for internal combustion engine |
| CN110621866B (en) * | 2017-05-26 | 2020-07-14 | 三菱电机株式会社 | Temperature prediction device and temperature prediction method for internal combustion engine |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Northern New Chongqing 401122 ring Yunzao Road No. 3 Patentee after: United Automotive Electronics (Chongqing) Co., Ltd. Address before: Northern New Chongqing 401122 ring Yunzao Road No. 3 Patentee before: CHONGQING CHANGAN VISTEON ENGINE CONTROL SYSTEMS CO., LTD. |