CN202273798U - Drive circuit for high-pressure pump of diesel engine high-pressure common-rail fuel system - Google Patents
Drive circuit for high-pressure pump of diesel engine high-pressure common-rail fuel system Download PDFInfo
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- CN202273798U CN202273798U CN2011203200656U CN201120320065U CN202273798U CN 202273798 U CN202273798 U CN 202273798U CN 2011203200656 U CN2011203200656 U CN 2011203200656U CN 201120320065 U CN201120320065 U CN 201120320065U CN 202273798 U CN202273798 U CN 202273798U
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- pressure
- drive circuit
- pwm signal
- diesel engine
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Abstract
The utility model discloses a drive circuit for a high-pressure pump of a diesel engine high-pressure common-rail fuel system, comprising a PWM (Pulse-Width Modulation) signal generation circuit, a PWM signal drive circuit, an output circuit, and a feedback control circuit; wherein the PWM signal generation circuit, the PWM signal drive circuit, and the output circuit are connected in order; an input end of the feedback control circuit is connected to an output end of the output circuit; and an output end of the feedback control circuit is connected to an input end of the PWM signal generation circuit. The drive circuit of the utility model simultaneously has a rail pressure adjusting function and a diagnosis function, and can generate needed rail pressure requirements according to the high-pressure pumps used by different models of high-pressure common-rail diesel engines; and the drive circuit also can accurately maintain a stable rail pressure when an automobile drives in a severe environment or suffers great interference, in order to realize accurate oil injection.
Description
Technical field
The utility model relates to a kind of drive circuit of diesel engine high-pressure co-rail oil-fired system high-pressure service pump.
Background technique
High pressure co-rail system can be implemented in the function that can't realize in traditional injection system, and its advantage has:
1, the injection pressure flexibility in the common rail system is adjustable, can confirm required best jet pressure to different operating modes, thus the Optimization of Diesel Engine combination property.
2, Flexible Control injection timing independently cooperates high jet pressure (120MPa～200MPa), can control NOx and particulate (PM) simultaneously in less numerical value, to satisfy emission request.
3, the Flexible Control injection rate changes, and the fuel injection characteristic of realizing ideal realizes pre-spray and multi-injection easily, both can reduce Diesel NOx, can guarantee good power character and Economy again.
4, by the electromagnetic valve oil spout, its control accuracy is higher, and can not occur bubble and residual voltage in the high-pressure oil passage is zero phenomenon; Therefore in the diesel engine operating range; The circulating fuel injection quantity change is little, and each oil supply cylinder is inhomogeneous to improve, thereby alleviates the vibration of diesel engine and reduce discharging.
In actual motion; The small fluctuation of rail pressure will cause the precision of oil sprayer oil spout; Must have stable rail pressure just to guarantee the realization of above advantage, the control strategy of working good through the drive circuit that repeatedly experiment showed, could guarantee the rail pressure control of safety and stability.
The model utility content
In order to solve the unstable problem of the existing rail pressure of existing diesel high-pressure fuel pump drive circuit, the utility model provides the drive circuit of the diesel engine high-pressure co-rail oil-fired system high-pressure service pump of a kind of real-time regulated rail pressure function and diagnostic function.
In order to realize above-mentioned technical purpose; The technological scheme of the utility model is; A kind of drive circuit of diesel engine high-pressure co-rail oil-fired system high-pressure service pump; Comprise pwm signal generation circuit, pwm signal drive circuit, output circuit and feedback control circuit; Described pwm signal generation circuit, pwm signal drive circuit, output circuit are linked in sequence successively, and the input end of described feedback control circuit is connected to the output terminal of output circuit, and the output terminal of feedback control circuit is connected to the input end of pwm signal generation circuit.
The drive circuit of described a kind of diesel engine high-pressure co-rail oil-fired system high-pressure service pump, what described pwm signal generation circuit adopted is the MPC5554 chip.
The drive circuit of described a kind of diesel engine high-pressure co-rail oil-fired system high-pressure service pump, what described pwm signal drive circuit adopted is the TLE6244 chip.
The high-pressure fuel pump drive circuit of described a kind of diesel engine high-pressure co-rail oil-fired system oil sprayer, what described feedback control circuit adopted is the INA194 chip.
The high-pressure fuel pump drive circuit of described a kind of diesel engine high-pressure co-rail oil-fired system oil sprayer; Described output circuit comprises protection diode D603; Sampling resistor R601, R602 and filter capacitor C601, C602; The negative pole of described protection diode D603 connects the 12V positive source, inserts the 4th pin of INA194 after the output signal of the positive pole of D603 and pwm signal drive circuit and the end of sampling resistor R601 are parallelly connected, and the other end of R601 is connected to the 3rd pin of INA194; The end of described sampling resistor R602 is connected to the 1st pin of INA194, is connected to the two ends of R602 after described filter capacitor C601 and the C602 parallel connection respectively.
The technique effect of the utility model is; While buffer rail compression functions and diagnostic function function; Can produce needed rail pressure according to the employed high-pressure service pump of high pressure co-rail diesel machine of different model; And when automobile running can both accurately be kept rail pressure stably during in rugged environment or when great interference is arranged, to realize accurate oil spout.
Below in conjunction with accompanying drawing the present invention is described further.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the utility model embodiment's a circuit diagram.
Embodiment
Referring to Fig. 1, Fig. 2; The utility model comprises pwm signal generation circuit, pwm signal drive circuit, output circuit and feedback control circuit; Pwm signal generation circuit, pwm signal drive circuit, output circuit are linked in sequence successively; The input end of feedback control circuit is connected to the output terminal of output circuit, and the output terminal of feedback control circuit is connected to the input end of pwm signal generation circuit.
Pwm signal generation circuit comprises U101; U101 is the core component CPU of ECU, employing be the MPC5554 chip, the pwm signal drive circuit comprises U601; U601 has adopted the TLE6244 chip; Output circuit comprises protection diode D603, sampling resistor R601, R602 and filter capacitor C601, C602, and the negative pole of protection diode D603 connects the 12V positive source; Insert the 4th pin of INA194 after the output signal of the positive pole of D603 and pwm signal drive circuit and the end of sampling resistor R601 are parallelly connected; The other end of R601 is connected to the 3rd pin of INA194, and the end of sampling resistor R602 is connected to the 1st pin of INA194, is connected to the two ends of R602 after filter capacitor C601 and the C602 parallel connection respectively.
U101 and U601 drive ripple in order to generation, adjustment and PWM; Drive ripple and carry out current sampling, become voltage signal ISEN to return the CPU that feeds again through the INA194 current conversion through R601 resistance,, the current value through feedback to the PWM ripple output revise.U101 realizes communicating by letter with U601 through the SPI mouth, comprises situation such as flow short-circuit but real-time tracking drives the state of output, and protects.TLE6244 is highly integrated driving chip, has practiced thrift resolution element greatly, and for the high reliability operation provides the foundation, INA194 is a high-precision high-speed V/I transducer, for exporting the PWM ripple in real time the most directly feedback data is provided.
Claims (5)
1. the drive circuit of a diesel engine high-pressure co-rail oil-fired system high-pressure service pump; It is characterized in that; Comprise pwm signal generation circuit, pwm signal drive circuit, output circuit and feedback control circuit; Described pwm signal generation circuit, pwm signal drive circuit, output circuit are linked in sequence successively, and the input end of described feedback control circuit is connected to the output terminal of output circuit, and the output terminal of feedback control circuit is connected to the input end of pwm signal generation circuit.
2. the drive circuit of a kind of diesel engine high-pressure co-rail oil-fired system high-pressure service pump according to claim 1 is characterized in that, what described pwm signal generation circuit adopted is the MPC5554 chip.
3. the drive circuit of a kind of diesel engine high-pressure co-rail oil-fired system high-pressure service pump according to claim 1 is characterized in that, what described pwm signal drive circuit adopted is the TLE6244 chip.
4. the drive circuit of a kind of diesel engine high-pressure co-rail oil-fired system high-pressure service pump according to claim 1 is characterized in that, what described feedback control circuit adopted is the INA194 chip.
5. the drive circuit of a kind of diesel engine high-pressure co-rail oil-fired system high-pressure service pump according to claim 4; It is characterized in that; Described output circuit comprises protection diode D603, sampling resistor R601, R602 and filter capacitor C601, C602, and the negative pole of described protection diode D603 connects the 12V positive source; Insert the 4th pin of INA194 after the output signal of the positive pole of D603 and pwm signal drive circuit and the end of sampling resistor R601 are parallelly connected; The other end of R601 is connected to the 3rd pin of INA194, and the end of described sampling resistor R602 is connected to the 1st pin of INA194, is connected to the two ends of R602 after described filter capacitor C601 and the C602 parallel connection respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203200656U CN202273798U (en) | 2011-08-31 | 2011-08-31 | Drive circuit for high-pressure pump of diesel engine high-pressure common-rail fuel system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203200656U CN202273798U (en) | 2011-08-31 | 2011-08-31 | Drive circuit for high-pressure pump of diesel engine high-pressure common-rail fuel system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202273798U true CN202273798U (en) | 2012-06-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203200656U Expired - Lifetime CN202273798U (en) | 2011-08-31 | 2011-08-31 | Drive circuit for high-pressure pump of diesel engine high-pressure common-rail fuel system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202273798U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116291831A (en) * | 2023-04-19 | 2023-06-23 | 卓品智能科技无锡股份有限公司 | Method and system for preventing false alarm of urea pump driving diagnosis fault |
-
2011
- 2011-08-31 CN CN2011203200656U patent/CN202273798U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116291831A (en) * | 2023-04-19 | 2023-06-23 | 卓品智能科技无锡股份有限公司 | Method and system for preventing false alarm of urea pump driving diagnosis fault |
| CN116291831B (en) * | 2023-04-19 | 2023-10-10 | 卓品智能科技无锡股份有限公司 | Method and system for preventing false alarm of urea pump driving diagnosis fault |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHANGSHA JIALI AUTOMOBILE CO., LTD. Free format text: FORMER OWNER: HUNAN PETECO POWER TECHNOLOGY CO., LTD. Effective date: 20121116 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 410000 CHANGSHA, HUNAN PROVINCE TO: 410100 CHANGSHA, HUNAN PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20121116 Address after: 410100 Hunan province Changsha City Economic and Technological Development Zone Li Xiang Road No. 15 Changsha Jiali Automobile Co Ltd Patentee after: Changsha Jaly Motors Co., Ltd. Address before: Yuelu District City, Hunan province 410000 Changsha national hi tech Industrial Development Zone No. 186 Gu Yuan Lu, Hunan University science and Technology Park Patentee before: Hunan Peteco Power Technology Co., Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: CHANGFENG GROUP CO., LTD. Free format text: FORMER OWNER: CHANGSHA JIALI AUTOMOBILE CO., LTD. Effective date: 20140605 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140605 Address after: 410100 Hunan province Changsha City Economic and Technological Development Zone Li Xiang Road No. 15 Patentee after: Changfeng Group Co., Ltd. Address before: Li Xiang Road 410100 Hunan province Changsha economic and Technological Development Zone No. 15 Changsha Jiali Automobile Co Ltd Patentee before: Changsha Jaly Motors Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120613 |