CN102705130A - Ignition or oil injection time adjusting device for internal combustion engine - Google Patents
Ignition or oil injection time adjusting device for internal combustion engine Download PDFInfo
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- CN102705130A CN102705130A CN2012101743695A CN201210174369A CN102705130A CN 102705130 A CN102705130 A CN 102705130A CN 2012101743695 A CN2012101743695 A CN 2012101743695A CN 201210174369 A CN201210174369 A CN 201210174369A CN 102705130 A CN102705130 A CN 102705130A
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Abstract
The invention relates to an ignition or oil injection time adjusting device for an internal combustion engine. The device comprises a rotating speed and crankshaft reference position signal amplitude limiting module for receiving an alternating current signal which is generated by a crankshaft rotating speed sensor and loaded with rotating speed and a crankshaft reference position, clipping and decreasing amplitude, a bucket brigade device (BBD) for delaying the rotating speed and crankshaft reference position signal for certain time and outputting the delayed signal to an electronic control unit (ECU) of the internal combustion engine, and a clock signal generator module for generating two same-frequency alternate clock signals, wherein delay time is adjusted by a variable resistor of a resistance-capacitance (RC) oscillating circuit. The device is reasonable in composition and easy to implement, works reliably, adjusts time flexibly, is suitable for adjusting the output energy of the internal combustion engine, can be used for the internal combustion engine with any number of cylinders, and is easy and convenient to install.
Description
Technical field
The present invention relates to field of internal combustion engine, a kind of specifically internal-combustion engine ignition or oil spout be controlling device constantly.In order to change the size and the ratio thereof of internal-combustion engine output mechanical energy and waste heat, make internal-combustion engine can adapt to the needs of user's cool and thermal power load variations more neatly at cool and thermal power associating energy supplying system.
Background technique
In the internal-combustion engine cooling heating and power generation system; Mechanical energy generating with internal-combustion engine output; Utilize waste heats such as discharging flue gas, jacket-cooling water to freeze and heat supply, realize the comprehensive utilization of energy, reach more high-energy utilization ratio, more lower energy cost and better energy supply multiple target such as environmental-protecting performance.
But, in a large amount of practical applications, have the roadability of cooling heating and power generation system and the problem that the actual load fluctuation is runed counter to: because the unstability of customer charge; Particularly building energy load usually and ambient temperature much relations are arranged; Various Seasonal, month, the different periods of every day, the cool and thermal power payload is all changing; Combination supply system often is under the variable working condition condition, and electric heating ratio alters a great deal; Be in the motive combination supply system with internal-combustion engine; The ratio of cool and thermal power is restricted by the waste heat and the mechanical energy ratio of internal-combustion engine output, only regulates throttle in the internal combustion engine operation at present, when changing the throttle size; Mechanical energy, the waste heat energy of output become greatly thereupon and diminish; But its mechanical energy and waste heat ratio can not be regulated, and can not satisfy user's electric load and heat load ratio and change actual demand greatly, and this has become the difficult problem that its heat-economy was applied and improved to combination supply system.
Change mechanical energy and waste heat ratio that internal-combustion engine ignition or oil spout can change its output constantly; But using and constantly all regulating automatically at present: be to calculate benchmark with the crankshaft-position signal by automatical control system in the igniting or the oil spout of the electronic control internal-combustion engine that produces; According to parameters such as the air-distributor vacuum that collects, rotating speed, coolant water temperatures; Central unit ECU is maximum and the environmental protection optimal control igniting or the oil spout moment by mechanical energy; Be internal regulation, do not have external adjustment igniting or oil spout measure constantly, can not regulate mechanical energy and waste heat energy size and ratio by foreign intervention.
Chinese patent 200820056078.5 discloses a kind of engine ignition system perspective increases advancer, and it comprises the signal generation device of an output crank shaft position signal; One reads this crank position signal, and this position signal is reached the signal adjustment computer that time difference between the cycle period that acceleration and deceleration are produced to engine increases and decreases processing in advance, and this signal adjustment computer is connected with this signal generation device; One carries out the engine computer that the increase of before top dead center ignition angle is controlled in advance, and this engine computer is connected with this signal adjustment computer.This device can only be used for independently system of crankshaft-position signal, restricted application with external computer control.At present, most I. C. engine crankshaft position signals are taken from crankshaft rotational speed sensor, and rotating speed and crankshaft-position signal mix, and can not adopt this device to regulate ignition point in internal combustion engines.At present,, also do not see relevant external adjustment igniting or oil spout bibliographical information constantly, do not see the bibliographical information of regulating internal-combustion engine output mechanical energy and waste heat energy proportion yet for the internal-combustion engine that rotating speed and crankshaft-position signal mix.
Summary of the invention
Technical problem to be solved by this invention is the deficiency that overcomes above-mentioned existing technology, provides a kind of composition reasonable, is easy to realize that reliable operation is regulated internal-combustion engine ignition or oil spout moment controlling device flexibly.
The technological scheme that the present invention solves the problems of the technologies described above employing is: a kind of internal-combustion engine ignition or oil spout be controlling device constantly; It is characterized in that: it comprises a rotating speed and crank reference position signal limiter module; Receive the alternating signal that is loaded with rotating speed and crank reference position that crankshaft rotational speed sensor produces, and the slicing range of decrease; A pipeful of chain type signal delay module (BBD) with rotating speed and crank reference position signal delay certain hour, and is exported to internal-combustion engine central unit (ECU); One clock signal generator module, two that produce same frequency replace CLK clock, and the break-make of metal-oxide-semiconductor in the control bucket chain formula signal delay module is through changing the frequency of CLK clock, the size of control lag time.
Rotating speed according to the invention and crank reference position signal limiter module are made up of R1, R2, R3 and VD1, VD2, VD3, VD4 and C1; Wherein R1 and VD1, VD2, VD3, VD4 form clipping circuit; Rotating speed and crank reference position signal amplitude are limited to below the 1.4V, export through the RC wave filter.
Bucket chain formula signal delay module according to the invention (BBD) is a kind of charge transfer device with analogue shift register function; Its basic structure is on silicon chip, to make a series of electric capacity side by side with MOS technology; Be coupled through the MOS field effect transistor between the adjacent capacitor, these metal-oxide-semiconductors play a part switch and buffering.These electronic switches add under the effect of clock signal outside, divide two groups of connecting and disconnecting constantly, and electric capacity replaces charge and discharge, and input signal is sent to output terminal, thereby has obtained the delay of time along with CLK clock control beat shifts to next stage electric capacity gradually.BBD progression is many more, and retard time is long more, and retard time, length also was inversely proportional to clock signal frequency.
Clock-signal generator module according to the invention; Be made up of clock generator intergrated circuit and RC vibrator circuit, two of its generation same frequency replace clock signal C P1, CP2, change the electric capacity and the resistance value of its CR oscillation circuit; Can change clock frequency, control signal length retard time.
Working principle of the present invention is: rotating speed is connected with crankshaft rotational speed sensor with crank reference position signal limiter module; Receive the alternating signal that is loaded with rotating speed and crank reference position that crankshaft rotational speed sensor produces; Behind clipping, export bucket chain formula signal delay module (BBD) to, signal postpones certain hour by BBD; Deliver to internal-combustion engine central unit (ECU); Central unit serves as to calculate benchmark with the crankshaft-position signal that postpones, and control ignition or oil spout make igniting or oil spout be able to constantly postpone constantly; Regulate the resistance value of the CR oscillation circuit of clock-signal generator module, change clock frequency, can regulate length signal delay time, control ignition or oil spout be the delay-angle size constantly.Bucket chain formula signal delay module (BBD) and clock-signal generator module are formed signal delay circuit, and crankshaft-position signal is postponed backward, i.e. move behind the igniting of ECU or the oil spout benchmark, realize igniting or oil spout delay constantly.
The present invention adopts above-mentioned composition structure, and against existing technologies, it is formed rationally, is easy to realize, reliable operation is regulated flexibly.Make internal-combustion engine on the basis of traditional Throttle Opening Control total energy, increased a controlling device again, the moment post ignition or the oil spout moment through setting from former machine, reduce the output of mechanical energy, increase the waste heat energy, changed the ratio of output energy.Δ
φValue is generally 0～30 ℃ of A, and internal-combustion engine output mechanical energy and waste heat ratio excursion are about 1/5～1/2, like this, can make the internal-combustion engine cooling heating and power generation system that self-regulating ability more flexibly and environmental suitability are arranged, and helps applying of combination supply system.This device can be used for the internal-combustion engine of any cylinder number, installs simple and convenient.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further specified.
Fig. 1 is that the present invention forms, connects block diagram.
Fig. 2 is a kind of rotating speed of the present invention and crank reference position signal limiter module diagram.
Fig. 3 is a kind of bucket chain formula of the present invention signal delay module principle schematic representation.
Fig. 4 is a crankshaft-position signal contrast schematic representation before and after the time-delay.
Fig. 5 is that schematic representation is formed, connected to the embodiment of the invention.
Fig. 6 is that the MN3102 vibrator circuit is formed schematic representation in the embodiment of the invention.
Fig. 7 is the frequency characteristic schematic representation of MN3102 vibrator circuit in the embodiment of the invention.
Embodiment
As can be seen from Figure 1, a kind of internal-combustion engine ignition or oil spout be controlling device constantly, and it comprises: a rotating speed and crank reference position signal limiter module, receive the alternating signal that is loaded with rotating speed and crank reference position that crankshaft rotational speed sensor produces, and the slicing range of decrease; A pipeful of chain type signal delay module (BBD) with rotating speed and crank reference position signal delay certain hour, and is exported to internal-combustion engine central unit (ECU); One clock signal generator module, two that produce same frequency replace CLK clock, and the break-make of metal-oxide-semiconductor in the control bucket chain formula signal delay module is through changing the frequency of CLK clock, the size of control lag time.
Rotating speed of the present invention and crank reference position signal limiter module, as shown in Figure 2.R1 and VD1, VD2, VD3, VD4 form clipping circuit, and rotating speed and crank reference position signal amplitude are limited to below the 1.4V, carry out RC filtering through R2 and C1, export to bucket chain formula signal delay module.Internal-combustion engine rotational speed and crank reference position signal are frequency variation signals, and amplitude is not a constant, and dynamic range is bigger, and the clipping circuit that process R1 and VD1, VD2, VD3, VD4 form carries out RC filtering by R2 and C1 again, obtains the alternating signal of an amplitude limit.
Bucket chain formula signal delay module of the present invention (BBD); It is a kind of charge transfer device with analogue shift register function; The electronic sound reverberator that is used for audifier more, its basic structure is seen Fig. 3, it is on silicon chip, to make a series of electric capacity side by side with MOS technology; Be coupled through the MOS field effect transistor between the adjacent capacitor, these metal-oxide-semiconductors play a part switch and buffering.Add clock signal CP1 outside, CP2 makes A1, A2, A3 ... In the time of conducting, make B1, B2, B3 ... End.This moment C1, C2, C3 ... Charging, C1 ', C2 ', C3 ' ... Discharge.Otherwise in like manner.Because the frequency of CLK clock is higher and phase place constantly changes, along with the conducting of two groups of metal-oxide-semiconductors with end, two groups of electric capacity replace charge and discharge.Input signal is sent to output terminal, thereby has obtained the delay of time along with clock pulse signal control beat shifts to next stage gradually.Retard time, length was determined by clock frequency:
τ=
N/(2
f cp)
（s） （1）
In the formula: N is the CMOS pipe quantity in the BBD module;
f
CpBe clock signal C P1, CP2 frequency.
Can calculate the crankshaft angles of signal delay by following formula according to internal-combustion engine rotational speed:
Δ
φ=360nτ/60=3n
N?/?
f cp （℃A） ?（2）
In the formula: n be internal-combustion engine rotational speed (rev/min).
Clock-signal generator module according to the invention; The clock generator intergrated circuit and the RC vibrator circuit of the special use of being furnished with by bucket chain formula signal delay chip are formed; Its produces two of same frequency alternately CLK clocks, i.e. the CP1 of Fig. 3, CP2 change the electric capacity and the resistance value of its CR oscillation circuit; Can change clock frequency, regulated signal length retard time.
Bucket chain formula signal delay module according to the invention (BBD) and clock-signal generator module are formed signal delay circuit, and crankshaft-position signal is postponed backward, i.e. move behind the igniting of ECU or the oil spout benchmark, realize igniting or oil spout delay constantly.Bucket chain formula signal delay module (BBD) is connected according to chip operating instruction regulation with the circuit that the clock-signal generator module is formed signal delay circuit.
Rotating speed of the present invention and crank reference position signal limiter module; Receive the alternating signal that is loaded with rotating speed and crank reference position that crankshaft rotational speed sensor produces; Behind clipping; Export to bucket chain formula signal delay module (BBD), signal postpones certain hour by BBD, exports to internal-combustion engine central unit (ECU); Regulate the resistance value of the CR oscillation circuit of clock-signal generator module, change clock frequency, can regulate length signal delay time.
Fig. 4 is a crankshaft-position signal contrast schematic representation before and after the time-delay, and abscissa is a crank angle, and long-period wave is a crankshaft-position signal, (a) is the time-delay front signal, (b) is time-delay back signal, Δ
φThe crank angle that the expression crankshaft-position signal postpones.
Internal-combustion engine central unit (ECU) is to calculate benchmark with the crankshaft-position signal, parameters such as synthetic load, rotating speed, coolant water temperature, and control ignition or oil spout are constantly.Controlling device according to the invention makes crankshaft-position signal postpone several angle backward; I.e. igniting or oil spout moves after calculating benchmark; Make that igniting or oil spout are able to postpone constantly; And then change internal-combustion engine output energy ratio, and realize the size and the ratio adjusting of internal-combustion engine output mechanical energy and waste heat, satisfy the adaptability of internal-combustion engine distributed triple-generation system to actual load.
Embodiment: this internal-combustion engine ignition or oil spout controlling device constantly are applied in an internal-combustion engine that is used for cooling heating and power generation system; Internal-combustion engine is automatically controlled Spark ignition type compressed natural gas motor; Working speed is 1500 rev/mins, and the electronic control ignition system is an open loop control mode.
Fig. 5 is that schematic representation figure is formed, connected to the embodiment of the invention.The clipping circuit that the R1 of rotating speed and crank reference position signal limiter module and VD1, VD2, VD3, VD4 form is limited to rotating speed and crank reference position signal amplitude below the 1.4V, carries out RC filtering through R2 and C1, exports to bucket chain formula signal delay module.
The MN3206 that bucket chain formula signal delay module selects for use MAT to produce,
N=128; The clock-signal generator module is selected the MN3102 that joins MN3200 series specially for use, and Fig. 6 is that the MN3102 vibrator circuit is formed schematic representation, and the frequency of CLK clock is by resistance and electric capacity decision, and Fig. 7 is the frequency characteristic schematic representation of MN3102 vibrator circuit.This example is selected C2=22pF, R4=5k Ω, and R5=0～400k Ω changes variable resistor R5 and regulates clock signal frequency, frequency range
f=700～20kHz, and then regulate rotating speed and crank reference position length signal delay time, by formula (2) must: when internal-combustion engine rotational speed during at 1500 rev/mins, crankshaft-position signal delay scope is Δ φ=0.82～28.8 Shaft angle of writing music.
Central unit (ECU) serves as to calculate benchmark with the crankshaft-position signal that postpones; Make that igniting or oil spout are able to postpone constantly; The delay scope is Δ φ=0.82～28.8 ℃ A, and internal-combustion engine output energy ratio is changed, and realizes the size and the ratio adjusting of internal-combustion engine output mechanical energy and waste heat; Internal-combustion engine output mechanical energy and waste heat ratio excursion are about 1/5～1/2, satisfy the adaptability requirement of internal-combustion engine distributed triple-generation system to actual load.
The present invention forms rationally, is easy to realize, reliable operation is regulated flexibly.Make internal-combustion engine on the basis of traditional Throttle Opening Control total energy, increased a controlling device again, the moment post ignition or the oil spout moment through setting from former machine, reduce the output of mechanical energy, increase the waste heat energy, changed the ratio of output energy.Δ
φValue is generally 0～30 ℃ of A, and internal-combustion engine output mechanical energy and waste heat ratio excursion are about 1/5～1/2, like this, can make the internal-combustion engine cooling heating and power generation system that self-regulating ability more flexibly and environmental suitability are arranged, and helps applying of combination supply system.This device can be used for the internal-combustion engine of any cylinder number, installs simple and convenient.
Claims (4)
1. internal-combustion engine ignition or oil spout controlling device constantly, it is characterized in that: it comprises a rotating speed and crank reference position signal limiter module, receives the alternating signal that is loaded with rotating speed and crank reference position of crankshaft rotational speed sensor generation, and the slicing range of decrease; A pipeful of chain type signal delay module (BBD) with rotating speed and crank reference position signal delay certain hour, and is exported to internal-combustion engine central unit (ECU); One clock signal generator module, two that produce same frequency replace CLK clock, and the break-make of metal-oxide-semiconductor in the control bucket chain formula signal delay module is through changing the frequency of CLK clock, the size of control lag time.
2. internal-combustion engine ignition according to claim 1 or oil spout be controlling device constantly; It is characterized in that: said rotating speed and crank reference position signal limiter module are made up of R1, R2, R3 and VD1, VD2, VD3, VD4 and C1; Wherein R1 and VD1, VD2, VD3, VD4 form clipping circuit; Rotating speed and crank reference position signal amplitude are limited to below the 1.4V, carry out RC filtering, export to bucket chain formula signal delay module through R2 and C1.
3. internal-combustion engine ignition according to claim 1 or oil spout be controlling device constantly, it is characterized in that: said bucket chain formula signal delay module (BBD) and clock-signal generator module are formed signal delay circuit.
4. internal-combustion engine ignition according to claim 1 or oil spout be controlling device constantly; It is characterized in that: said clock-signal generator module is made up of clock generator intergrated circuit and RC vibrator circuit; Two of its generation same frequency replace clock signal C P1, CP2, through regulating the resistance value of RC vibrator circuit, change clock frequency; Control signal length retard time postpones internal-combustion engine ignition or oil spout.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101743695A CN102705130A (en) | 2012-05-31 | 2012-05-31 | Ignition or oil injection time adjusting device for internal combustion engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101743695A CN102705130A (en) | 2012-05-31 | 2012-05-31 | Ignition or oil injection time adjusting device for internal combustion engine |
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| CN102705130A true CN102705130A (en) | 2012-10-03 |
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| CN2012101743695A Pending CN102705130A (en) | 2012-05-31 | 2012-05-31 | Ignition or oil injection time adjusting device for internal combustion engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111188688A (en) * | 2020-01-15 | 2020-05-22 | 西安交通大学 | Thermoelectric ratio adjusting method for distributed energy system of gas engine |
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| JPH01187371A (en) * | 1988-01-18 | 1989-07-26 | Mitsubishi Electric Corp | Ignition timing controller |
| US5403246A (en) * | 1991-05-02 | 1995-04-04 | Mitsubishi Denki Kabushiki Kaisha | Control device for an internal combustion engine |
| CN2379616Y (en) * | 1999-07-26 | 2000-05-24 | 黄章跃 | Means for automatically controlling electronic ignition of automobile |
| CN1411557A (en) * | 2000-01-19 | 2003-04-16 | 亨达利机械工场 | Electric arc monitoring systems |
| CN200978763Y (en) * | 2006-12-04 | 2007-11-21 | 北京东方智明科技有限公司 | Digital lighter realizing accurate speed limiting |
| CN201401264Y (en) * | 2009-04-02 | 2010-02-10 | 江门市蓬江区天迅科技有限公司 | Inductance igniter with adjustable ignition advanced angle for CG125-type engines |
-
2012
- 2012-05-31 CN CN2012101743695A patent/CN102705130A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01187371A (en) * | 1988-01-18 | 1989-07-26 | Mitsubishi Electric Corp | Ignition timing controller |
| US5403246A (en) * | 1991-05-02 | 1995-04-04 | Mitsubishi Denki Kabushiki Kaisha | Control device for an internal combustion engine |
| CN2379616Y (en) * | 1999-07-26 | 2000-05-24 | 黄章跃 | Means for automatically controlling electronic ignition of automobile |
| CN1411557A (en) * | 2000-01-19 | 2003-04-16 | 亨达利机械工场 | Electric arc monitoring systems |
| CN200978763Y (en) * | 2006-12-04 | 2007-11-21 | 北京东方智明科技有限公司 | Digital lighter realizing accurate speed limiting |
| CN201401264Y (en) * | 2009-04-02 | 2010-02-10 | 江门市蓬江区天迅科技有限公司 | Inductance igniter with adjustable ignition advanced angle for CG125-type engines |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111188688A (en) * | 2020-01-15 | 2020-05-22 | 西安交通大学 | Thermoelectric ratio adjusting method for distributed energy system of gas engine |
| CN111188688B (en) * | 2020-01-15 | 2021-02-02 | 西安交通大学 | Thermoelectric ratio adjusting method for distributed energy system of gas engine |
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Application publication date: 20121003 |