CN203285554U - Highly-integrated diesel engine high-pressure common rail electronic control unit - Google Patents
Highly-integrated diesel engine high-pressure common rail electronic control unit Download PDFInfo
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- CN203285554U CN203285554U CN2013202733173U CN201320273317U CN203285554U CN 203285554 U CN203285554 U CN 203285554U CN 2013202733173 U CN2013202733173 U CN 2013202733173U CN 201320273317 U CN201320273317 U CN 201320273317U CN 203285554 U CN203285554 U CN 203285554U
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- switching tube
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Abstract
A highly-integrated diesel engine high-pressure common rail electronic control unit comprises a main control chip, a power supply processing circuit, a communication circuit, an analog signal processing circuit, a switching signal processing circuit, a crankshaft signal processing circuit, a camshaft signal processing circuit, a predrive control chip, a direct-current boosted circuit, a solenoid valve drive circuit, a rail pressure control valve drive circuit, a current sampling circuit, an EGR valve control circuit and a relay control circuit. The communication circuit, the analog signal processing circuit, the switching signal processing circuit, the crankshaft signal processing circuit, the camshaft signal processing circuit, the predrive control chip, the EGR valve control circuit and the relay control circuit are connected with the main control chip. The predrive control chip is connected with the direct-current boosted circuit, the solenoid valve drive circuit, the rail pressure control valve drive circuit and the current sampling circuit, and the direct-current boosted circuit, the solenoid valve drive circuit and the rail pressure control valve drive circuit are connected with the current sampling circuit. The power supply processing circuit is connected with the main control chip and the predrive control chip.
Description
Technical field
The utility model belongs to the Electronic Control Technology in Diesel Engines field, relates to the integrated diesel engine high-pressure co-rail ECU (Electrical Control Unit) of a kind of height.
Background technique
As everyone knows, the internal-combustion engine disposal of pollutants is large public hazards of countries in the world government common concern.Therefore, in succession worked out the Standard andRegulation of all kinds of relevant controlling engine exhaust pollutants both at home and abroad, and increasingly strict.The quality that the engine exhaust pollutant is controlled, both affected physical environment, human health, also affects internal-combustion engine and supporting various main computer boxes sale and competitive ability at home and abroad.At present, each engine production enterprise, institute and institution of higher learning all are being the energy-saving and emission-reduction effort.Under this background, electronic diesel control has become popular research topic, and the diesel engine electric control high pressure common rail system is born just under this research background a kind of control device.It can realize Engine Injection Mass, injection pressure, injection timing, the isoparametric accurate control of multi-injection, thereby has greatly improved power character, the Economy of motor, has reduced discharging and noise etc.
For designing and developing of diesel engine high-pressure co-rail ECU (Electrical Control Unit), in the realization of each functions of modules, domestic research and development institution or relevant enterprise, most Combination Design schemes that adopt one or more integrated chips to coordinate interlock circuit, and then by Master control chip, coordinate to control whole system.Yet, such design proposal whole circuitry is existed use number of chips too much, cost up, main control chip resource too much taken, the inferior defect of whole system inefficiency.Therefore, design and develop that a kind of level of integration is high, high working efficiency, control accuracy is high and the integrated diesel engine high-pressure co-rail ECU (Electrical Control Unit) of height that can effectively reduce costs is fully necessary.
The model utility content
The purpose of this utility model is for the deficiencies in the prior art part, provides a kind of height integrated diesel engine high-pressure co-rail ECU (Electrical Control Unit).
The utility model can achieve the above object by the following technical solutions: highly integrated diesel engine high-pressure co-rail ECU (Electrical Control Unit) comprises: main control chip, power supply processing circuit, communicating circuit, analog signal processing circuit, switching signal processing circuit, crankshaft signal processing circuit, camshaft signal processing circuit, predrive control chip, DC voltage booster circuit, driving circuit for electromagnetic valve, rail pressure control valve-driving circuit, current sampling circuit, EGR valve controling circuit, control relay circuit; Communicating circuit, analog signal processing circuit, switching signal processing circuit, crankshaft signal processing circuit, camshaft signal processing circuit are connected with main control chip respectively; Main control chip is connected with predrive control chip, EGR valve controling circuit, control relay circuit respectively; The predrive control chip is connected with DC voltage booster circuit, driving circuit for electromagnetic valve, rail pressure control valve-driving circuit, current sampling circuit respectively, and DC voltage booster circuit, driving circuit for electromagnetic valve, rail pressure control valve-driving circuit are connected with current sampling circuit respectively; Power supply processing circuit is connected with main control chip, predrive control chip respectively.
DC voltage booster circuit comprises: energy storage inductor, switching tube, isolating diode, storage capacitor, the first sampling resistor, the first divider resistance, the second divider resistance, the predrive control chip is connected with the grid of switching tube, the drain electrode of switching tube is connected with an end of energy storage inductor and the anode of isolating diode respectively, the other end of energy storage inductor is connected with voltage VBAT, the negative electrode of isolating diode respectively with the positive pole of storage capacitor, one end of formation voltage VT and the first divider resistance is connected, the minus earth of storage capacitor, the other end of the first divider resistance is connected with an end and the predrive control chip of the second divider resistance respectively, the other end ground connection of the second divider resistance, the source electrode of switching tube connects an end and the predrive control chip of the first sampling resistor, the other end ground connection of the first sampling resistor also connects the predrive control chip.
Driving circuit for electromagnetic valve comprises: the first flash switching tube, the second flash switching tube, the first charging capacitor, current-limiting resistance, the first lower edge switch pipe, the second lower edge switch pipe, the first fly-wheel diode, the second fly-wheel diode, the second sampling resistor, the first solenoid valve, the second solenoid valve.the grid of the first flash switching tube is connected with the predrive control chip, the drain electrode of the first flash switching tube connects voltage VBAT, the grid of the second flash switching tube is connected with the predrive control chip, the drain electrode of the second flash switching tube connects formation voltage VT, the source electrode of the first flash switching tube respectively with the source electrode of the second flash switching tube, one end of the first charging capacitor, one end of current-limiting resistance is connected, the other end of the first charging capacitor is connected with the predrive control chip, the other end of current-limiting resistance respectively with the predrive control chip, one end of the first solenoid valve, one end of the second solenoid valve is connected, the other end of the first solenoid valve respectively with the drain electrode of the first lower edge switch pipe, the anode of the first fly-wheel diode, the predrive control chip is connected, the other end of the second solenoid valve respectively with the drain electrode of the second lower edge switch pipe, the anode of the second fly-wheel diode, the predrive control chip is connected, formation voltage VT respectively with the negative electrode of the first fly-wheel diode, the negative electrode of the second fly-wheel diode is connected, the predrive control chip respectively with the grid of the first lower edge switch pipe, the grid of the second lower edge switch pipe is connected, the source electrode of the first lower edge switch pipe respectively with the source electrode of the second lower edge switch pipe, one end of the second sampling resistor, the predrive control chip is connected, the other end ground connection of the second sampling resistor also connects the predrive control chip.
The rail pressure control valve-driving circuit comprises: third high limit switching tube, the second charging capacitor, the 3rd lower edge switch pipe, the 3rd fly-wheel diode, the 3rd sampling resistor, rail pressure control valve.the grid of third high limit switching tube is connected with the predrive control chip, the drain electrode of third high limit switching tube is connected with the negative electrode of voltage VBAT and the 3rd fly-wheel diode respectively, the source electrode of third high limit switching tube respectively with an end of the second charging capacitor, one end of rail pressure control valve, the predrive control chip is connected, the other end of the second charging capacitor connects the predrive control chip, the grid of the 3rd lower edge switch pipe is connected with the predrive control chip, the drain electrode of the 3rd lower edge switch pipe respectively with the anode of the 3rd fly-wheel diode, the other end of rail pressure control valve, the predrive control chip is connected, the source electrode of the 3rd lower edge switch pipe connects an end and the predrive control chip of the 3rd sampling resistor, the other end ground connection of the 3rd sampling resistor also connects the predrive control chip.
the utility model can reach following good effect after adopting technique scheme: the diesel engine high-pressure co-rail ECU (Electrical Control Unit) is adopted highly integrated design proposal, not only can reduce the usage quantity of integrated chip in ECU (Electrical Control Unit), reduce the built-up circuit of ECU (Electrical Control Unit), make circuit board compact and reasonable more when layout, improve the anti-electromagnetic interference capability of circuit board, reduce development cost, and can save the internal resource of main control chip in ECU (Electrical Control Unit), improve whole ECU (Electrical Control Unit) working efficiency, thereby can better control the rail pressure of diesel engine high-pressure co-rail system, fuel injection quantity and injection timing, increase reliability, improve control accuracy.
Description of drawings
Fig. 1 is the structural representation block diagram of the integrated diesel engine high-pressure co-rail ECU (Electrical Control Unit) of the utility model height.
Fig. 2 is the DC voltage booster circuit schematic diagram of the integrated diesel engine high-pressure co-rail ECU (Electrical Control Unit) of the utility model height.
Fig. 3 is the driving circuit for electromagnetic valve schematic diagram of the integrated diesel engine high-pressure co-rail ECU (Electrical Control Unit) of the utility model height.
Fig. 4 is the rail pressure control valve-driving circuit schematic diagram of the integrated diesel engine high-pressure co-rail ECU (Electrical Control Unit) of the utility model height
Embodiment:
Below in conjunction with accompanying drawing, the utility model is further described.As shown in Figure 1, highly integrated diesel engine high-pressure co-rail ECU (Electrical Control Unit) consists of following components: main control chip 1, power supply processing circuit 2, communicating circuit 3, analog signal processing circuit 4, switching signal processing circuit 5, crankshaft signal processing circuit 6, camshaft signal processing circuit 7, predrive control chip 8, DC voltage booster circuit 9, driving circuit for electromagnetic valve 10, rail pressure control valve-driving circuit 11, current sampling circuit 12, EGR valve controling circuit 13, control relay circuit 14; Analog signal processing circuit 4, switching signal processing circuit 5, crankshaft signal processing circuit 6, camshaft signal processing circuit 7 output to main control chip 1 after signal is processed; Main control chip 1 sends control signal to predrive control chip 8, EGR valve controling circuit 13, control relay circuit 14; Predrive control chip 8 sends control signal to DC voltage booster circuit 9, driving circuit for electromagnetic valve 10, rail pressure control valve-driving circuit 11; DC voltage booster circuit 9, driving circuit for electromagnetic valve 10, rail pressure control valve-driving circuit 11 provide signal to current sampling circuit 12, and the signal that current sampling circuit 12 will collect is input to predrive control chip 8; Communicating circuit 3 is connected with main control chip 1; Power supply processing circuit 2 output voltages are to main control chip 1, predrive control chip 8.
As shown in Figure 2, DC voltage booster circuit 9 comprises: energy storage inductor L1, switching tube Q1, isolating diode D1, storage capacitor C1, the first sampling resistor R1, the first divider resistance R2, the second divider resistance R3.When switching tube Q1 is closed, the voltage VBAT that Vehicular accumulator cell provides flows through energy storage inductor L1, electric current on energy storage inductor L1 increases, energy storage inductor L1 starts stored energy, the first sampling resistor R1 gathers the electric current of energy storage inductor L1 and outputs to predrive control chip 8, and predrive control chip 8 is according to the electric current of the whole circuit of Current Control that collects; When switching tube Q1 disconnected, energy storage inductor L1 started the charging to storage capacitor C1 by isolating diode D1, and storage capacitor C1 both end voltage raises; The bleeder circuit that the first divider resistance R2 and the second divider resistance R3 form is input to formation voltage VT in predrive control chip 8, and predrive control chip 8 is regulated whole circuit according to input signal, thereby obtains needed magnitude of voltage.DC voltage booster circuit 9 provides formation voltage VT for driving circuit for electromagnetic valve 10.
As shown in Figure 3, driving circuit for electromagnetic valve 10 comprises: the first flash switching tube Q2, the second flash switching tube Q3, the first charging capacitor C2, current-limiting resistance R4, the first lower edge switch pipe Q4, the second lower edge switch pipe Q5, the first sustained diode 2, the second sustained diode 3, the second sampling resistor R5, the first solenoid valve F1, the second solenoid valve F2.Predrive control chip 8 sends respectively control signal to the second flash switching tube Q3 and the first lower edge switch pipe Q4, formation voltage VT provides energy to the first solenoid valve F1, solenoid valve F2 cut-off this moment second by the second flash switching tube Q3 and the first lower edge switch pipe Q4 in the mode of pulsewidth modulation (PWM) ripple; Formation voltage VT is discharged to lower than after voltage VBAT, and predrive control chip 8 sends control signal to the first flash switching tube Q2, and voltage VBAT provides energy by the first flash switching tube Q2 and the first lower edge switch pipe Q4 to the first solenoid valve F1; Motor is after a circulation, and the second solenoid valve F2 repeats above-mentioned action, the first solenoid valve F1 cut-off.The electric current that the second sampling resistor R5 will collect outputs to predrive control chip 8, and predrive control chip 8 is according to the electric current of the whole circuit of Current Control that collects.
As shown in Figure 4, rail pressure control valve-driving circuit 11 comprises: third high limit switching tube Q6, the second charging capacitor C3, the 3rd lower edge switch pipe Q7, the 3rd sustained diode 4, the 3rd sampling resistor R6, rail pressure control valve F3.Predrive control chip 8 sends respectively control signal to third high limit switching tube Q6 and the 3rd lower edge switch pipe Q7, voltage VBAT provides energy in PWM ripple mode to rail pressure control valve F3 by third high limit switching tube Q6 and the 3rd lower edge switch pipe Q7, the current signal that the 3rd sampling resistor R6 will collect outputs to predrive control chip 8, and predrive control chip 8 is controlled the electric current of whole circuit according to the current signal that collects.
This programme not only can reduce the usage quantity of integrated chip in the diesel engine high-pressure co-rail ECU (Electrical Control Unit), reduces development cost, and can save the internal resource of main control chip in ECU (Electrical Control Unit), improves the working efficiency of whole ECU (Electrical Control Unit).
Claims (4)
1. highly integrated diesel engine high-pressure co-rail ECU (Electrical Control Unit), comprising: main control chip (1), power supply processing circuit (2), communicating circuit (3), analog signal processing circuit (4), switching signal processing circuit (5), crankshaft signal processing circuit (6), camshaft signal processing circuit (7), predrive control chip (8), DC voltage booster circuit (9), driving circuit for electromagnetic valve (10), rail pressure control valve-driving circuit (11), current sampling circuit (12), EGR valve controling circuit (13), control relay circuit (14); It is characterized in that: communicating circuit (3), analog signal processing circuit (4), switching signal processing circuit (5), crankshaft signal processing circuit (6), camshaft signal processing circuit (7) are connected with main control chip (1) respectively; Main control chip (1) is connected with predrive control chip (8), EGR valve controling circuit (13), control relay circuit (14) respectively; Predrive control chip (8) is connected with DC voltage booster circuit (9), driving circuit for electromagnetic valve (10), rail pressure control valve-driving circuit (11), current sampling circuit (12) respectively, and DC voltage booster circuit (9), driving circuit for electromagnetic valve (10), rail pressure control valve-driving circuit (11) are connected with current sampling circuit (12) respectively; Power supply processing circuit (2) is connected with main control chip (1), predrive control chip (8) respectively.
2. the integrated diesel engine high-pressure co-rail ECU (Electrical Control Unit) of height according to claim 1, it is characterized in that: DC voltage booster circuit (9) comprising: energy storage inductor (L1), switching tube (Q1), isolating diode (D1), storage capacitor (C1), the first sampling resistor (R1), the first divider resistance (R2), the second divider resistance (R3), predrive control chip (8) is connected with the grid of switching tube (Q1), the drain electrode of switching tube (Q1) is connected with an end of energy storage inductor (L1) and the anode of isolating diode (D1) respectively, the other end of energy storage inductor (L1) is connected with voltage VBAT, the negative electrode of isolating diode (D1) respectively with the positive pole of storage capacitor (C1), one end of formation voltage VT and the first divider resistance (R2) is connected, the minus earth of storage capacitor (C1), the other end of the first divider resistance (R2) is connected with an end and the predrive control chip (8) of the second divider resistance (R3) respectively, the other end ground connection of the second divider resistance (R3), the source electrode of switching tube (Q1) connects an end and the predrive control chip (8) of the first sampling resistor (R1), the other end ground connection of the first sampling resistor (R1) also connects predrive control chip (8).
3. the integrated diesel engine high-pressure co-rail ECU (Electrical Control Unit) of height according to claim 1, it is characterized in that: driving circuit for electromagnetic valve (10) comprising: the first flash switching tube (Q2), the second flash switching tube (Q3), the first charging capacitor (C2), current-limiting resistance (R4), the first lower edge switch pipe (Q4), the second lower edge switch pipe (Q5), the first fly-wheel diode (D2), the second fly-wheel diode (D3), the second sampling resistor (R5), the first solenoid valve (F1), the second solenoid valve (F2), the grid of the first flash switching tube (Q2) is connected with predrive control chip (8), the drain electrode of the first flash switching tube (Q2) connects voltage VBAT, the grid of the second flash switching tube (Q3) is connected with predrive control chip (8), the drain electrode of the second flash switching tube (Q3) connects formation voltage VT, the source electrode of the first flash switching tube (Q2) respectively with the source electrode of the second flash switching tube (Q3), one end of the first charging capacitor (C2), one end of current-limiting resistance (R4) is connected, the other end of the first charging capacitor (C2) is connected with predrive control chip (8), the other end of current-limiting resistance (R4) respectively with predrive control chip (8), one end of the first solenoid valve (F1), one end of the second solenoid valve (F2) is connected, the other end of the first solenoid valve (F1) respectively with the drain electrode of the first lower edge switch pipe (Q4), the anode of the first fly-wheel diode (D2), predrive control chip (8) is connected, the other end of the second solenoid valve (F2) respectively with the drain electrode of the second lower edge switch pipe (Q5), the anode of the second fly-wheel diode (D3), predrive control chip (8) is connected, formation voltage VT respectively with the negative electrode of the first fly-wheel diode (D2), the negative electrode of the second fly-wheel diode (D3) is connected, predrive control chip (8) respectively with the grid of the first lower edge switch pipe (Q4), the grid of the second lower edge switch pipe (Q5) is connected, the source electrode of the first lower edge switch pipe (Q4) respectively with the source electrode of the second lower edge switch pipe (Q5), one end of the second sampling resistor (R5), predrive control chip (8) is connected, the other end ground connection of the second sampling resistor (R5) also connects predrive control chip (8).
4. the integrated diesel engine high-pressure co-rail ECU (Electrical Control Unit) of height according to claim 1, it is characterized in that: rail pressure control valve-driving circuit (11) comprising: third high limit switching tube (Q6), the second charging capacitor (C3), the 3rd lower edge switch pipe (Q7), the 3rd fly-wheel diode (D4), the 3rd sampling resistor (R6), rail pressure control valve (F3), the grid of third high limit switching tube (Q6) is connected with predrive control chip (8), the drain electrode of third high limit switching tube (Q6) is connected with the negative electrode of voltage VBAT and the 3rd fly-wheel diode (D4) respectively, the source electrode of third high limit switching tube (Q6) respectively with an end of the second charging capacitor (C3), one end of rail pressure control valve (F3), predrive control chip (8) is connected, the other end of the second charging capacitor (C3) connects predrive control chip (8), the grid of the 3rd lower edge switch pipe (Q7) is connected with predrive control chip (8), the drain electrode of the 3rd lower edge switch pipe (Q7) respectively with the anode of the 3rd fly-wheel diode (D4), the other end of rail pressure control valve (F3), predrive control chip (8) is connected, the source electrode of the 3rd lower edge switch pipe (Q7) connects an end and the predrive control chip (8) of the 3rd sampling resistor (R6), the other end ground connection of the 3rd sampling resistor (R6) also connects predrive control chip (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202733173U CN203285554U (en) | 2013-05-20 | 2013-05-20 | Highly-integrated diesel engine high-pressure common rail electronic control unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202733173U CN203285554U (en) | 2013-05-20 | 2013-05-20 | Highly-integrated diesel engine high-pressure common rail electronic control unit |
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| CN203285554U true CN203285554U (en) | 2013-11-13 |
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| CN2013202733173U Expired - Fee Related CN203285554U (en) | 2013-05-20 | 2013-05-20 | Highly-integrated diesel engine high-pressure common rail electronic control unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277206A (en) * | 2013-05-20 | 2013-09-04 | 第一拖拉机股份有限公司 | Highly-integrated diesel high-pressure common-rail electronic control unit |
| CN104373235A (en) * | 2014-12-03 | 2015-02-25 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | High-voltage common rail piezoelectric actuator drive current control circuit |
-
2013
- 2013-05-20 CN CN2013202733173U patent/CN203285554U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277206A (en) * | 2013-05-20 | 2013-09-04 | 第一拖拉机股份有限公司 | Highly-integrated diesel high-pressure common-rail electronic control unit |
| CN104373235A (en) * | 2014-12-03 | 2015-02-25 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | High-voltage common rail piezoelectric actuator drive current control circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131113 Termination date: 20210520 |