CN101639010A - Internal combustion engine on-board control system - Google Patents

Internal combustion engine on-board control system Download PDF

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CN101639010A
CN101639010A CN200810144257A CN200810144257A CN101639010A CN 101639010 A CN101639010 A CN 101639010A CN 200810144257 A CN200810144257 A CN 200810144257A CN 200810144257 A CN200810144257 A CN 200810144257A CN 101639010 A CN101639010 A CN 101639010A
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combustion engine
circuit
internal
online
control system
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杨应捷
杨惜景
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Abstract

An internal combustion engine on-board control system (OBC) replacing OBD, is composed of a counter unit, a scanning driver, a digital displayer, a delay circuit, a circuit consisting of various digital gate integrated circuits, and an embedded type program of an electronic control unit (ECU) of an internal combustion engine management system (EMS). Whether the running of the internal combustion engine is subject to faults such as poor combustion, excessive tail gas discharge and the like so as to need maintenance according to internal combustion engine cooling liquid, lubricant liquid level,piston component abrasion, condition of air valve sealing, and conversion condition of a three-way catalytic converter, thus reducing graved abrasion caused by ill work of the internal combustion engine, increased consumption of fuel oil and increased discharge of tail gas pollutants, reducing embarrassed situation of unobvious treatment effect of tail gas caused by manual indiscipline behavior, achieving the aim of energy saving, emission reducing and environment protection without the supervision of the environment protection authorities, and having the function of preventing people from intentionally escaping system control.

Description

Internal-combustion engine online (vehicle-mounted) automatic control system
Technical field
The invention discloses internal-combustion engine online (vehicle-mounted) automatic control system of a kind of alternative OBD, be mainly used in stroke piston combustion engine.This system can be according to the liquid level of cooling liquid of IC engine, lubricant oil; the wearing and tearing of piston assembly; whether valve assembly sealing is good, and the conversion situation analysis of three former catalyst converters judges whether internal combustion engine operation exists that burning is bad need shut down maintenance with faults such as exhaust emissions exceed standard.Forbid that internal-combustion engine goes to work braving one's illness and cause aggravation wearing and tearing, fuel oil to increase the row that increases of consumption and exhaust pollutant.Minimizing is because of the difficult situation of the artificial treating tail gas DeGrain that behavior caused of not restraining oneself, and that supervision that need not environmental administration reaches is energy-conservation, the purpose of reduction of discharging, environmental protection.Also be provided with and prevent that the people from being the function of thinking deliberately to avoid system's control behavior.
Technical background
Existing technology is that (OBD is the abbreviation of English On-Board Diagnostics to On-Board Diagnostics (OBD), and translator of Chinese is " online (vehicle-mounted) auto-check system ", has developed into third generation product from OBD to OBD-III, below is referred to as OBD.)。Its principle is to utilize the dioxygen sensor to be arranged on the rear and front end of three former catalytic converters.When the telecommunications breath waveform of two lambda sensors output not simultaneously, illustrate that three former catalytic converters are working properly, telecommunications breath waveform illustrates when identical that three former catalytic converter failures can not cleaning of off-gas, exhaust emissions exceeds standard.System will utilize this telecommunications breath to monitor automobile at any time whether tail gas exceeds standard, in case exceed standard, can send caution at once.When system proposed failure warning, fault (MIL) lamp or inspection motor (Check Engine) emergency warning lamp were bright, and powertrain control module (PCM) deposits fault message in storage simultaneously, diagnostic trouble code can be read from PCM by certain procedure.According to the prompting of diagnostic trouble code, the maintenance man can determine the character and the position of fault quickly and accurately.The OBD at initial stage does not have self-checking function, and more advanced OBD-H provides unified diagnostic mode according to the standard that AIAE American institute of automobile engineers (SAE) is formulated.When carbon monoxide (CO), hydrocarbon (HC), oxynitrides (NOx) or the fuel evaporation contaminant capacity of motor vehicle emission surpass the standard of setting, trouble light will be lighted warning.OBD-II is very effective to the monitoring motor vehicle emission, but the driver accepts warning entirely with " conscious ".Developed OBD-III, main purpose is that the detection, the maintenance and management that make automobile are integrated, to satisfy requirement on environmental protection for this reason.System can enter respectively and go read failure sign indicating number and other related data in system computerized (ECU) such as motor, gearbox, ABS, and utilize the information automatic announcement managerial departments such as identity code, diagnostic trouble code and position of small-sized in-vehicle communication system with vehicle, managerial department sends instruction according to the grade of this vehicular discharge problem to it, comprise the suggestion of where keeping in repair, solve the time limit of emission problem etc., also can send forbidden instruction the violator's that exceeds the time limit vehicle.System can not only give a warning to the driver to the vehicular discharge problem, and can also punish the violator.
There is the defective of following two aspects in On-Board Diagnostics (OBD) (OBD series) in sum:
Technical elements:
1, if cause the valve oil seal high temperature ageing to scurry lubricant oil because of internal-combustion engine temporarily lacks cooling liquid, make a lubricant oil part enter the firing chamber through intake valve and enter offgas duct through exhaust valve again, another part directly enters offgas duct through exhaust valve.Because the molecule of lubricant oil is big, can not fully burn, enter and stop up three former catalytic converters so contain the lubricant oil steam and the burnt pledge of a large amount of carbon granules, make it lose the function of catalyzed conversion tail gas.And might not be that piston assembly wearing and tearing and the poorly sealed thing that pollutes of valve assembly really exceed standard.
2, internal-combustion engine causes scarce machine oil to continue to use because of oil sump breaks leakage of oil, pressurized machine oil sealing and various oil sealing leakage of oil, oil consumption increases, blowdown exceeds standard and three former catalytic converter losses of function because of the heavy wear that lacks lubricant oil causes to make internal-combustion engine serious accelerated wear test, especially piston assembly.
3, the OBD series product only are suitable for the Spark ignition type gasoline engine, and inapplicable compression-ignited diesel engine is because diesel engine can not adopt three former catalytic converters.
Management aspect:
1, the emission and the receiving system of communication must be set on every chassis, and environmental administration must set up huge receiving system, and can send the emission system of independent instruction at each individuality.
2, environmental administration must set up and comprise managerial departments such as the controlling of communication emitting-receiving system, daily management, inspection, supervision, file administration.In case owner information has change, control difficulty and well imagine.
3, every chassis increases the cost of communication apparatus in addition.
Summary of the invention
According to technical background, the deficiency of internal-combustion engine online (vehicle-mounted) auto-check system, invented and utilized counter unit, decoder, scanner driver, delay circuit, circuit that the intergrated circuit of various digital gate circuits is formed or above-mentioned device and circuit are formed the embedded program of the electronic control unit (ECU) of the specific integrated circuit of high integration more and engine management system (EMS), in conjunction with waste gas sensor of crankcase, liquid level sensor, fuel level sensor, (Engine On-Board ControlSystem is abbreviated as OBC to the internal-combustion engine of compositions such as lambda sensor online (vehicle-mounted) automatic control system, hereinafter to be referred as OBC).Function is as follows:
1, automatic control of liquid: OBC is provided with cooling liquid of IC engine, lubricating oil level sensor.Pass to OBC when any one sensor provides the low excessively information of liquid level, OBC provides the time-delay halt instruction immediately, and controlling combustion engine is shut down.After supplying liquid, supplying oil, lack liquid, oil starvation information can be eliminated immediately, starting apparatus combustion engine just can continue operation once more.Lack and stop, no longer scarce liquid, oil starvation are just no longer shut down after maintenance is found out fault and got rid of.Prevent that thoroughly internal-combustion engine from increasing because of the scarce liquid of accident, oil starvation cause unnecessary accelerated wear test and the oil consumption after the accelerated wear test, blowdown is huge.
2, piston assembly wearing and tearing control automatically: OBC is provided with waste gas sensor of crankcase, and the information of utilizing this sensor to provide can judge that whether the wearing and tearing of piston assembly are near exceeding standard discharging.In case discharging OBC when exceeding standard provides caution (on the instrument desk caution digital lamp bright and the wind song arranged) and opens counter unit simultaneously and begin to count; counting can be selected number of times, distance travelled number or the caution beginning back internal combustion engine time number of idling; when the counting meter was expired default numerical value, OBC provided the time-delay halt instruction immediately and shuts down.On instrument desk, be provided with count display, be convenient to the time period that driver (operator) grasps counting, utilize the time of this section counting to do the preceding preparatory work of maintenance.In addition, waste gas sensor of crankcase can make engine management system (the Engine Maragement System EMS that abridges, hereinafter to be referred as EMS) analyze and distinguish that the piston assembly fault still be the valve assembly fault, help energy-conservation, reduce discharging and the maintenance of simplification fault.
3, the valve assembly fault is controlled automatically: when certain cylinder valve sealing is not tight; when idling for internal combustion engine; the compression pressure deficiency of this cylinder; the angular velocity of bent axle is inhomogeneous; phenomenon occurs catching fire, the embedding in the electronic control unit of EMS (ECU) judges relatively that as going into the formula program back is to an instruction of being shut down by OBC control time-delay.Increase and the damage of lambda sensor and three former catalyst converters so that this insufficient fuel consume that is caused that prevents to burn, pollutant emission are huge.
4, defense is controlled automatically: in order to prevent to pull out the electrical plug of waste gas sensor of crankcase, the artificial control of deliberately avoiding OBC.Whether the electrical plug that makes circuit resolution Abgassensor is online, receives not online information of waste gas sensor of crankcase when pulling up electrical plug OBC, and OBC provides the time-delay halt instruction immediately.
5, the OBD product only is suitable for gasoline engine, and this OBC product is applicable to all kinds of stroke piston combustion engines.
Description of drawings
Accompanying drawing 1 illustrates embodiment 1 utilize counter unit, decoder, demonstration to sweep to drive circuit that the intergrated circuit retouch device, digital display, analog switch, delay circuit, anti-dead electricity circuit, anti-short circuit current, various digital gate circuits forms or above-mentioned device and circuit and forms the more specific integrated circuit of high integration and the embedded program of ECU, a kind of electrical schematic diagram of (vehicle-mounted) on-line automatic control system (OBC) of forming in conjunction with waste gas sensor of crankcase, liquid level sensor, lambda sensor etc., element among the figure (21) is an engine speed sensor.Element (22) is the tach signal amplification of operational amplifier with element (21) internal-combustion engine.Element (43) (43 1) be diode.Element (23) is the cooling liquid of IC engine liquid level sensor, (23 1) be to connect the beacon of instrument desk and the line-connecting machine of hummer.Element (24) is the internal combustion (IC) engine lubricating oil fuel level sensor, (24 1) also be to connect the oil level beacon of instrument desk and the line-connecting machine of hummer.Element (42) is a battery.Element (26) is a NOR gate.Element (25) is that (another patent of invention of crank case of internal combustion engine Abgassensor application, its principle is not in this set forth in detail for the crank case of internal combustion engine Abgassensor.), with the internal combustion engine component wear cause will blowdown information pass to control system.Element (26 1) (26 2) be reverser.(45) be the main circuit plate of vehicle-mounted automatic control system.Element (27) is or door the v=n+1 of input end.Element (28), (28 1) be the bidirectional analog switch.Element (29) is four input NOR gate.Element (37) is a delay circuit.(50) be the circuit board of engine management system (EMS) electronic control unit (ECU).(50 1) be the line-connecting machine that internal-combustion engine rotational speed information is defeated by engine management system.(50 2) be by engine management system according to rotating speed, catch fire, waste gas sensor of crankcase (50 4) etc. the information computing judge that the valve fault exports to the line-connecting machine of OBC outage information.(50 3) be by engine management system according to the dioxygen sensor comparison operation judge that three former catalytic converter failures export to the line-connecting machine of OBC outage information.(50 4) be the line-connecting machine that waste gas sensor of crankcase (25) is given away the fault message of engine management system.(50 5) be the line-connecting machine that engine management system is defeated by OBC idling number of times, distance travelled number or temporal information.Element (30) is and door.Element (31) is or door.Element (32) is ten to advance counting/seven-segment decoder.(50 6) be EMS release information line-connecting machine.Element (33) is the reading scan driver.Element (36) and gate.(34) be to connect the digital line-connecting machine seat that shows of instrument desk.(46) be on the main circuit plate (45) of online (vehicle-mounted) automatic control system, advance counting/seven-segment decoder (32) or other all kinds of binary system, binary coded decimal, two-16 arbitrary carry system by n ten to add/counter unit circuit that down counter is formed.(this specification employing ten is advanced counting/seven-segment decoder and is done the purpose that the counter unit that adds counting illustrates invention that embodiment reaches.Also can adopt the adding of all kinds of arbitrary carry systems/down counter to form counting/decoding circuit and reach purpose of the present invention, the control circuit of all kinds of gate circuits compositions that the respective peripheral circuit adopts is different.) accompanying drawing 2 is instrument desk digital displaies, element (38) is the digital display pipe.(35) be the line-connecting machine plug that is connected with (34).Accompanying drawing 3 is that element ten advances counting/seven-segment decoder (32) each limb numbering and functional symbol marked graph.Accompanying drawing 4 is electrical schematic diagrams of embodiment 2, and is the same substantially with embodiment 1, bidirectional analog switch (28) control that different is be the power supply of operational amplifier.Accompanying drawing 5 is electrical schematic diagrams of embodiment 3, and element (39) is the power tube of the oil sprayer power amplification utmost point.Element (40) is the oil sprayer coil.(50 7) be the preposition sequence controller of oil sprayer.All the other elements are identical with embodiment 1, bidirectional analog switch (28) control that different is be the power supply of the preposition sequence controller of oil spout.Accompanying drawing 6 is electrical schematic diagrams of embodiment 4, and element (41) is a spark coil.Element (39) is the power switch pipe of the igniting power amplification utmost point.Element (50 8) be the preposition sequence controller of igniting.All the other elements are identical with embodiment 1, bidirectional analog switch (28) control that different is be the power supply of the preposition sequence controller of igniting.
Embodiment
Advance counting/seven-segment decoder (32) by n ten in conjunction with the accompanying drawings and form the embedded program that adds counter unit (46) and numeric door intergrated circuit and ECU, narrate implementation process of the present invention in conjunction with a kind of electrical schematic diagram of internal-combustion engine online (vehicle-mounted) automatic control system (OBC) of compositions such as waste gas sensor of crankcase (25), liquid level sensor (23), (24):
Embodiment 1 in conjunction with the accompanying drawings 1, Fig. 2, Fig. 3 illustrate embodiment.
When the cooling liquid of internal-combustion engine was reduced to limit position, the switch in the liquid level sensor (23) was by the cursory conducting with the reduction of liquid level, and voltage, electric current are imported through the terminal 2 of liquid level sensor (23), from terminal two-way output in 1 fen.One the tunnel through line-connecting machine (23 1) go instrument desk to light liquid level emergency warning lamp and hummer.The pin 1 that four input NOR gate (29) are defeated by on another road is " 1 ", and four input NOR gate (29) are output as " 0 ", and it is closed through the time control bidirectional analog switch (28) that delay circuit (37) postpones to set.Blocked the rotary speed information that operational amplifier (22) transfers to the internal-combustion engine of EMS, so EMS thinks that internal-combustion engine does not change not oil spout, shutdown misfires.
Equally, when the lubricant oil position of internal-combustion engine was reduced to limit position, the switch in the fuel level sensor (24) was by the cursory conducting with the reduction of liquid level, and voltage, electric current are imported through the terminal 2 of fuel level sensor (24), divide two-way from terminal 1 output.One the tunnel through line-connecting machine (24 1) go instrument desk to light oil level emergency warning lamp and hummer.The pin 1 that four input NOR gate (29) are defeated by on another road is " 1 ", and four input NOR gate (29) are output as " 0 ", and it is closed through the time control bidirectional analog switch (28) that delay circuit (37) postpones to set.Blocked the rotary speed information that operational amplifier (22) transfers to the internal-combustion engine of EMS, so EMS thinks that internal-combustion engine does not change not oil spout, shutdown misfires.
Before the waste gas sensor of crankcase (25) of internal-combustion engine does not provide upset information, the terminal 2 of Abgassensor (25) is " 1 ", the terminal 1 of exporting to NOR gate (26) is " 1 ", the terminal 3 of Abgassensor (25) is exported to or the terminal 1 of door (31) is " 0 ", the terminal 2 of NOR gate (26) also is " 0 ", and NOR gate (26) is output as " 0 "; Or door (27) n+1 input end be " 0 " because n ten advances counting/seven-segment decoder (32), and the original state of v be " 0 ", thus export to or the terminal 2 of (31) also is " 0 ", thus or (31) be output as " 0 "; Bidirectional analog switch (28 is closed in the output of this information 1), the no electricity of reading scan driver (33) is closed digital display pipe (38); Be defeated by not gate (26 simultaneously 1) make it be output as " 1 ", make all n positions ten advance counting/seven-segment decoder (32) terminal 2 and stopping count status for " 1 "; Be defeated by line (50 4) notify the EMS internal combustion engine normal; The terminal 1 of being defeated by with door (30) is " 0 ", and the carry that terminal 2 advances counting/seven-segment decoder (32) because of n position ten is " 0 ", is defeated by with (30) and is output as " 0 ", and four import NOR gate (29) is output as " 1 ", bidirectional analog switch (28) conducting.Rotary speed information normally is defeated by EMS.When the waste gas sensor of crankcase (25) of internal-combustion engine because of the piston assembly wearing and tearing, it provides upset information when reaching and being converted into the limiting value of waste gas sensor of crankcase (25) amount of leakage by pollutant emission index.The terminal 2 of Abgassensor (25) transfers " 0 " to by " 1 ", and terminal 3 transfers " 1 " to by " 0 ".Or the terminal 1 of door (31) be that " 1 ", terminal 2 is " 0 ", and it is output as " 1 "; This information is opened bidirectional analog switch (28 1), reading scan driver (33) gets electric, and digital display pipe (38) begins to show; This information is through reverser (26 1) become " 0 ", to be defeated by everybody and ten to advance counting/seven-segment decoder (32) terminal 2 and open the pulse input gate, the idling number of times of EMS, mileage number or time number just can be through line-connecting machines (50 with the form of pulse 5) inputing to the terminal 1 that counting/seven-segment decoder (32) is advanced in a position ten, counting begins; Or door (27) n input end be not " 0 " entirely because n ten advances counting/seven-segment decoder (32), so or (27) be output as " 1 " self-locking or (31), it is not changed because of the upset again of Abgassensor (25).Control the people and wanted the purpose of replying for the plug that pulls out Abgassensor (25); This information is defeated by and the terminal 1 of door (30) is the carry information " 1 " that the carry terminal 5 of counting/seven-segment decoder (32) is advanced in " 1 " waiting n position ten, the line-connecting machine (50 of being defeated by EMS simultaneously 4) be " 1 ", inform EMS fault and storage failure information; Also be defeated by the terminal 2 of and gate (36), prepare to cooperate (50 6) internal-combustion engine after repairing from new recovery, zero clearing information.When digital display pipe (38) is warned digital full up; just the carry information of carry terminal 5 of counting/seven-segment decoder (32) is advanced when " 1 " in n position ten; be defeated by with " 1 " of the terminal 2 of door (30) and make and door (30) upset with the terminal of waiting for already 1; be output as " 1 " with door (30); be defeated by the terminal 2 of four input NOR gate (29); make NOR gate (29) be output as " 0 "; closed bidirectional analog switch (28) through the time that delay circuit (37) postpones to set; blocked the rotary speed information that operational amplifier (22) transfers to the internal-combustion engine of EMS; EMS thinks that internal-combustion engine does not rotate, so not oil spout; misfire and shut down.This carry information is that " 1 " is through diode (43 simultaneously 1) control ten terminals 2 that advance counting/seven-segment decoder (32) are " 1 ", make all ten to advance counting/seven-segment decoder (32) and stop counting, ten to advance counting/seven-segment decoder (32) complete be " 0 " this moment.Because EMS is not by (50 6) provide to remove and shut down pulse, so and gate (36) is output as " 1 ".This information is defeated by or door (27) and not gate (26 2), maintenance or door (27) are output as the continuation locking of " 1 ".Or door (27) and or door (31), make ten to advance counting/seven-segment decoder (32) not because of being zero entirely from newly beginning to count (just internal-combustion engine can not from new startup).That petty not gate (26 2) be output as " 0 " and give each ten terminal 15 that advances counting/seven-segment decoder (32), prepare zero clearing.After having repaired internal-combustion engine, remove fault message and pass through (50 with decoder 6) give 1 one positive pulses of and gate (36) terminal from new recovery, zero clearing information, cooperate with " 1 " of the terminal of waiting for already 2, make and gate (36) be output as " 0 ", this information makes reverser (26 2) be output as " 1 " and advance counting/seven-segment decoder (32) zero clearing to all ten, then or door (27) be output as " 0 " and cooperate with " 0 " of the terminal 3 of Abgassensor (25) and make or door (31) overturn to be " 0 ", make with door (30) and be " 0 ", four input NOR gate (29) are output as " 1 " and open bidirectional analog switch (28), internal-combustion engine rotational speed information is passed through, and internal-combustion engine just can start.While or door (31) upset make the output of and gate (36) remain " 0 " for " 0 ", and OBC gets back to original state.
Break away from OBC supervision when artificial wanting, have a mind to pull out Abgassensor (25) plug the time, the terminal 2,3 of Abgassensor (25) is " 0 ", the input end of NOR gate (26) is " 0 ", is output as " 1 ".The terminal 1 that this information is defeated by four input NOR gate (29) is " 1 "; control its upset and be output as " 0 "; close bidirectional analog switch (28) through the time that delay circuit (37) postpones to set; blocked the rotary speed information that operational amplifier (22) transfers to the internal-combustion engine of EMS, so EMS thinks that internal-combustion engine does not rotate not oil spout, shutdown misfires.
The terminal 4 of four input NOR gate (29) connects line-connecting machine (50 2) be embedded program by the ECU (Electrical Control Unit) (ECU) of engine management system (EMS), just be solidificated in the operation program in the ROM (read-only memory) (ROM or EPROM) in the electronic control unit (ECU), waste gas sensor of crankcase when being used for idling for internal combustion engine (25) is through line-connecting machine (50 4) when fault-free information is exported; reach to give according to the information calculations internal-combustion engine of barometric pressure sensor and put the required fuel injection pulse of standard idling speed and whether widen than standard fuel injection pulse; whether the pulse of calculating simultaneously in the internal-combustion engine rotational speed information is even; differentiate valve and whether have poorly sealed fault; when fuel injection pulse is widened; pulse in the rotary speed information simultaneously is inhomogeneous, judges that then valve exists fault to export to the circuit of OBC outage information.Terminal 3 connects line-connecting machine (50 3) be by engine management system EMS according to the dioxygen sensor comparison operation judge whether three former catalytic converters lost efficacy and export to the circuit of OBC outage information.
Battery in the accompanying drawing 1 (42) is anti-dead electricity circuit.When the outside cut off the power supply, battery (42) provided electric energy to keep the operating count information of OBC not lose, connect power supply once more after, OBC can continue operation by the operation count information before the outage.Diode (43) is anti-short circuit current, plays the possibility that prevents to discharge because of outage back, outside short circuit external circuit desire internal cell (42) electric energy, and the operating count information of protection OBC is not lost, and keeps the long-time use of battery (42).
Embodiment 2; In conjunction with the accompanying drawings 4, Fig. 2, Fig. 3 be substantially the same manner as Example 1, bidirectional analog switch (28) control that different is be the power supply of operational amplifier (22), not control information passage.
Embodiment 3; In conjunction with the accompanying drawings 5, Fig. 2, Fig. 3 be substantially the same manner as Example 1, different is the preposition sequence controller (50 that bidirectional analog switch (28) is being controlled oil sprayer 7) power supply, when OBC control was shut down, bidirectional analog switch (28) cut out preposition sequence controller (50 7) power supply, so preposition sequence control (50 7) output of no switching information, power switch pipe (39) is closed, oil sprayer coil (40) no current and not oil spout, engine shutdown.
Embodiment 4; In conjunction with the accompanying drawings 6, Fig. 2, Fig. 3 be substantially the same manner as Example 1, different is the preposition sequence controller (50 that bidirectional analog switch (28) is being controlled igniter 8) power supply, when OBC control was shut down, bidirectional analog switch (28) cut out preposition sequence controller (50 8) power supply, so preposition sequence controller (50 8) output of no switching information, power switch pipe (39) is closed, ignitor coil (41) no current and not fiery, engine shutdown.
Above-mentioned four embodiments just advance counting/decoder composition multidigit with a kind of ten in the digital circuit and add counting decoder, illustrate how to realize inventing by the combination of selecting corresponding various gate circuit intergrated circuit for use.In like manner adopt any one system add/subtract multidigit counting unit that counting/decoder forms and the combination of various gate circuit intergrated circuit can realize purpose of the present invention.Also the combined electrical principle that can finish these counter units of the object of the invention and gate circuit intergrated circuit can be integrated in a special chip or be integrated in the electronic control unit (ECU) of engine management system EMS.Be to be understood that, the above illustrative and nonrestrictive just for the purpose of the present invention of explanation in conjunction with the embodiments, without departing from the spirit and scope of the present invention, can make many changes and modification to the present invention, it all will drop on the scope of the invention defined by the claims.

Claims (9)

1, a kind of internal-combustion engine online (vehicle-mounted) automatic control system, it is characterized in that: by counter unit, scanner driver, digital display, delay circuit, circuit that the intergrated circuit of various digital gate circuits is formed or above-mentioned device and circuit theory are formed the embedded program of the electronic control unit (ECU) of the specific integrated circuit of high integration more and engine management system (EMS), waste gas sensor of crankcase in conjunction with the interface outside, the cooling liquid liquid level sensor, the lubricating oil level sensor, internal-combustion engine online (vehicle-mounted) automatic control system (Engine On-Board Control System) that lambda sensor etc. are formed possesses the cooling liquid automatic control of liquid, the lubricant oil liquid level is controlled automatically, piston assembly wearing and tearing control automatically, the valve assembly fault is controlled automatically, three former catalytic converter failures are control and defensive control automatically automatically.
2, a kind of internal-combustion engine as claimed in claim 1 online (vehicle-mounted) automatic control system is characterized in that: counter unit can be by n position D type MS master-slave trigger, toggle flip-flop, the TE D-flip flop of counting unit; N position two to 16 arbitrary carry systems, serial counter or the frequency divider of asynchronous counter; The n position of coincidence counter is non-presets that number can preset maybe that several two to 16 arbitrary carry systems add deduct that the n position BCD-of counter or frequency divider and decoder latchs or unlatching, 7 sections or 8 sections decoding, current driver or liquid crystal drivers greatly; The latching of n position/7 sections decoding/driver or decimal system counting/7 segment decoders or n position binary-coded decimal-decimal code decoding circuit or 4 latch/and 4 lines-16 line decoder or duo-binary system 4 select 1 decoder/separator to be arbitrarily made with.
3, a kind of internal-combustion engine as claimed in claim 1 online (vehicle-mounted) automatic control system, it is characterized in that: scanner driver is made up of eight-decimal system counting/distributor, time sequential pulse clapp oscillator and 1/N counter.
4, a kind of internal-combustion engine as claimed in claim 1 online (vehicle-mounted) automatic control system, it is characterized in that: digital display can be by the gaseous discharge digital display; The fluorescence digital display device; The semiconductor display device; Liquid crystal display constitutes.
5, a kind of internal-combustion engine as claimed in claim 1 online (vehicle-mounted) automatic control system is characterized in that: the intergrated circuit of various digital gate circuits comprises anti-phase level buffer converter (phase inverter), in-phase levels buffer converter (homophase device), controls the circuit that (with door), operational amplifier (comparator), trigger, scmitt trigger circuit are formed with door, AND NOT gate or door, NOR gate, negative and door, negative or door, and gate, biconditional gate, AND, three-state.
6, a kind of internal-combustion engine as claimed in claim 1 online (vehicle-mounted) automatic control system is characterized in that: it is dedicated IC chip by the high integration of making as claim 1 and 2 and 3 and 5 described counter units, scanner driver, various digital gate circuit that circuit that the intergrated circuit of various digital gate circuits is formed or above-mentioned device and circuit theory are formed the specific integrated circuit of high integration more.
7, a kind of internal-combustion engine as claimed in claim 1 online (vehicle-mounted) automatic control system, it is characterized in that: the embedded program of the electronic control unit (ECU) of engine management system (EMS) is, be solidificated in the operation program in ROM (read-only memory) (ROM or EPROM) in the electronic control single (ECU) of engine management system (EMS), when not having the waste gas sensor of crankcase fault message when being used for idling for internal combustion engine, reach according to the information calculations internal-combustion engine of barometric pressure sensor whether give the required fuel injection pulse of the idling speed that sets up standard earlier super wideer than standard fuel injection pulse, whether the pulse of calculating simultaneously in the internal-combustion engine rotational speed information is even, differentiates valve and has poorly sealed fault.
8, a kind of internal-combustion engine as claimed in claim 1 online (vehicle-mounted) automatic control system is characterized in that: the number that counter unit is counted can be the number of times of idling for internal combustion engine running, the mileage number that travels and fault time number.
9, a kind of internal-combustion engine as claimed in claim 1 online (vehicle-mounted) automatic control system is characterized in that: defensive control automatically is divided into two parts; The one, the recognition circuit whether Electric plug with shutter of being made up of information and the Electric plug with shutter and the AND NOT gate (F) of waste gas sensor of crankcase output is online reaches defensive automatic control; The 2nd, the external power cord of being made up of battery and diode opens circuit, the protection of short circuit control.
CN200810144257A 2008-07-28 2008-07-28 Internal combustion engine on-board control system Pending CN101639010A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101858827A (en) * 2010-05-25 2010-10-13 中国第一汽车集团公司无锡柴油机厂 Method for temporarily interrupting fault diagnosis of diesel engine
CN103758619A (en) * 2014-01-22 2014-04-30 王有传 Automobile exhaust forcible maintenance method and device for implementing same
CN108924170A (en) * 2018-09-21 2018-11-30 深圳市领世达科技有限公司 Vehicle data conversion equipment
CN110823577A (en) * 2019-10-14 2020-02-21 中国第一汽车股份有限公司 Vehicle PCV system fault monitoring method and system, vehicle and storage medium

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101858827A (en) * 2010-05-25 2010-10-13 中国第一汽车集团公司无锡柴油机厂 Method for temporarily interrupting fault diagnosis of diesel engine
CN101858827B (en) * 2010-05-25 2012-11-28 中国第一汽车集团公司 Method for temporarily interrupting fault diagnosis of diesel engine
CN103758619A (en) * 2014-01-22 2014-04-30 王有传 Automobile exhaust forcible maintenance method and device for implementing same
CN108924170A (en) * 2018-09-21 2018-11-30 深圳市领世达科技有限公司 Vehicle data conversion equipment
CN108924170B (en) * 2018-09-21 2024-04-23 深圳市领世达科技有限公司 Vehicle data conversion device
CN110823577A (en) * 2019-10-14 2020-02-21 中国第一汽车股份有限公司 Vehicle PCV system fault monitoring method and system, vehicle and storage medium

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