CN102518532A - Device utilizing hydrogen gas to realize quick start and stop of ignition internal-combustion engine and control method thereof - Google Patents
Device utilizing hydrogen gas to realize quick start and stop of ignition internal-combustion engine and control method thereof Download PDFInfo
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- CN102518532A CN102518532A CN2011104244092A CN201110424409A CN102518532A CN 102518532 A CN102518532 A CN 102518532A CN 2011104244092 A CN2011104244092 A CN 2011104244092A CN 201110424409 A CN201110424409 A CN 201110424409A CN 102518532 A CN102518532 A CN 102518532A
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Abstract
The invention provides a device utilizing hydrogen gas to realize quick start and stop of an ignition internal-combustion engine and a control method thereof and particularly relates to control of combustion and quick start and stop of an internal-combustion engine. A hydrogen gas supply device and an electronic control unit are additionally arranged on the basis of reserving all parts of the internal-combustion engine body. The electronic control unit can judge and control stop and running of the internal-combustion engine according to revolution speed of the internal-combustion engine, automobile speed and position of a throttle valve to reduce idling running time of the internal-combustion engine greatly so that waste of energy of the internal-combustion engine during idling and harmful emission are reduced. Besides, since pure hydrogen gas is used as fuel to start the internal-combustion engine quickly, the start time is shortened, and fuel consumption and harmful emission of the internal-combustion engine during starting are decreased.
Description
Technical field
The present invention provides a kind of device and controlling method with the quick start-stop of hydrogen realization ignition internal combustion engine, the control that particular content relates to combustion in IC engine, quick starting and stops.
Background technique
Externally not exporting useful work during idling for internal combustion engine comes powered vehicle to advance; At congestion in road or when waiting traffic light; The driver understands maneuver vehicle stops; If do not extinguish motor this moment, the internal-combustion engine that then is in idling mode operation still can consume fuel, thereby causes to the waste of fuel and to the pollution of environment.
To the problems referred to above; The BSG technology that is adopted at present can stop internal combustion engine operation automatically under vehicle stop state; And when the driver steps on the throttle pedal, utilize actuating motor to drag motor oil spout once more to a certain higher rotation speed, igniting fast, make engine start.Adopt this technology can effectively reduce idling for internal combustion engine working time, thus realize internal-combustion engine energy-conservation, reduce discharging.Simultaneously, internal-combustion engine being dragged to oil spout after the higher rotation speed also can utilize degree of vacuum higher in the intake duct to reduce the oil film effect of liquid fuel when the starting.
But; For present employed gasoline, methyl alcohol, ethanol and mix for the pure gasoline; Because the oil film effect of liquid fuel can not eliminate fully through improving intake duct degree of vacuum; Therefore for the ignition internal combustion engine that uses liquid fuel, still need carry out enriching when adopting after the BSG technology engine starting and spray, thereby the fuel consumption of internal-combustion engine when starting increased fuel.Simultaneously, for the internal-combustion engine that uses the conventional carbon hydrogen fuel, also can produce a large amount of HC and CO discharging during starting.
Summary of the invention
To energy waste and the emission pollution problem that traditional combustion engine is produced when idling and the quick starting, the invention provides a kind of device and controlling method that realizes the quick start-stop of ignition internal combustion engine with hydrogen.The present invention can come engine starting and the control that stops through detecting Vehicle Speed and throttle position, and through utilizing the pure hydrogen cranking internal combustion engine to come basic a large amount of HC and the CO discharging that the conventional carbon hydrogen-fueled internal combustion engine is produced of eliminating in the Fraquent start process.Simultaneously, because hydrogen is a kind of vaporized fuel, uses the hydrogen cranking internal combustion engine also need when starting, not carry out enriching, thereby reduced the fuel consumption when starting fuel.In addition, the ignition energy that hydrogen is lower also makes pure hydrogen internal combustion engine under lean burn conditions, to start with broad lean-burn boundary, thereby further reduces the fuel consumption when starting.
To achieve these goals, the present invention has taked following technological scheme:
A kind of device of realizing the quick start-stop of ignition internal combustion engine with hydrogen; On the basis that keeps original flywheel 1, starting gear 2, starter motor control relay 3, former organic electronic control unit 5, ignition module 7, spark plug 8 and former machine fuel nozzle 9 on the internal-combustion engine, installed a cover hydrogen gas supplying apparatus and an electronic control unit 4 additional;
Described hydrogen gas supplying apparatus comprises hydrogen cylinder 6, hydrogen nozzle 10, hydrogen pressure governor 11 and Hydrogen Vapor Pressure sensor 12.Hydrogen cylinder 6 links to each other through the hydrogen supply air line with hydrogen nozzle 10; Hydrogen nozzle 10 is installed on the intake manifold of each cylinder of internal-combustion engine; Hydrogen Vapor Pressure sensor 12 is installed on the supply air line of hydrogen cylinder 6 outlets, and hydrogen pressure governor 11 is installed on the hydrogen supply air line that connects hydrogen nozzle 10 and Hydrogen Vapor Pressure sensor 12.
Described electronic control unit 4 is connected with former organic electronic control unit 5, obtains internal-combustion engine rotational speed signal b, GES c, throttle position signal d, former machine fuel injection signal e, former machine fire signal f and air flow rate signal k;
Electronic control unit 4 is connected with Hydrogen Vapor Pressure sensor 12, obtains hydrogen cylinder pressure signal j;
Electronic control unit 4 is connected with starter motor control relay 3, sends starter motor control signal a;
Electronic control unit 4 is connected with ignition module 7 and former machine fuel nozzle 9, sends ignition module control signal g and former machine fuel nozzle control signal h;
Electronic control unit 4 links to each other with the control end of hydrogen nozzle 10, is used to send hydrogen nozzle control signal i;
Described hydrogen pressure governor with hydrogen gas pressure stabilization between the 2.0bar to 3.5bar.
A kind ofly among the present invention realize that with hydrogen the ignition internal combustion engine controlling method of quick start-stop is following:
Electronic control unit 4 detects internal-combustion engine rotational speed signal b, GES c and throttle position signal d; When internal-combustion engine rotational speed is higher than normal idling or the speed of a motor vehicle and is in open mode greater than 0km/h or closure; Electronic control unit 4 judges that internal-combustion engine is in normal operating condition; At this moment; Electronic control unit 4 sends former machine fuel nozzle control signal h and hydrogen nozzle control signal i according to the former machine fuel injection signal e that obtains from former organic electronic control unit 5, makes the opening and closing of former machine fuel nozzle 9 constantly identical with former internal-combustion engine, and closes hydrogen nozzle 10 simultaneously; Simultaneously, electronic control unit 4 also sends ignition module control signal g control ignition module 7 according to the former machine fire signal f that obtains from former organic electronic control unit 5, makes the arcing of spark plug 8 constantly identical with former machine.
Electronic control unit 4 detects GES c and throttle position signal d; When internal-combustion engine rotational speed reaches normal idling speed and the speed of a motor vehicle and equals 0km/h and closure and be in closed condition; Electronic control unit 4 judges that vehicle stops in motion fully, and at this moment, electronic control unit 4 sends former machine fuel nozzle control signal h and hydrogen nozzle control signal i; Former machine fuel nozzle 9 and hydrogen nozzle 10 are closed, thereby make internal-combustion engine out of service.
When internal-combustion engine was out of service, electronic control unit 4 detected throttle position signal d, when closure is opened; Electronic control unit 4 judges that internal-combustion engine need be by quick starting, and at this moment, electronic control unit 4 at first detects hydrogen cylinder pressure signal j; When Hydrogen Vapor Pressure is lower than 5bar; Electronic control unit 4 sends starter motor control signal a, connects starter motor control relay 3, and starting gear 2 is meshed with starting tooth on the flywheel 1; Drag internal-combustion engine and begin rotation; Simultaneously, electronic control unit 4 also sends former machine fuel nozzle control signal h and hydrogen nozzle control signal i according to the former machine fuel injection signal e that obtains from former organic electronic control unit 5, makes the opening and closing of former machine fuel nozzle 9 constantly identical with former internal-combustion engine; And close hydrogen nozzle 10 simultaneously; Electronic control unit 4 also sends ignition module control signal g control ignition module 7 according to the former machine fire signal f that obtains from former organic electronic control unit 5, makes the arcing of spark plug 8 constantly identical with former machine, thereby internal-combustion engine is started with original fuel combustion pattern; When Hydrogen Vapor Pressure during more than or equal to 5bar, electronic control unit 4 judges that internal-combustion engines can use pure hydrogen to start, at this moment; Electronic control unit 4 sends starter motor control signal a, connects starter motor control relay 3, and starting gear 2 is meshed with starting tooth on the flywheel 1; Drag internal-combustion engine and begin rotation; Simultaneously, electronic control unit 4 sends former machine fuel nozzle control signal h and hydrogen nozzle control signal i, closes former machine fuel nozzle 9; And send hydrogen nozzle control signal i according to detected internal-combustion engine rotational speed signal b and air flow rate signal k and according to formula 1; Thereby the hydrogen flowing quantity that every circulation is got into internal-combustion engine is controlled, and in addition, electronic control unit 4 also sends ignition module control signal g control ignition module 7; The arcing of spark plug 8 in the engine starting process is controlled in before top dead center to the top dead center in the 10 degree scopes constantly, and postpones with the increase of spray hydrogen amount.
m
H2=m
Air/ (34.3 λ) formula 1
m
Air=2000m '
Air/ (60N) formula 2
In the formula 1, m
H2Be every circulating hydrogen emitted dose g/cycle; m
AirGet into the air quality g/cycle of internal-combustion engine for every circulation; λ is an excess air coefficient, 1.00≤λ≤9.00; N is the internal-combustion engine rotational speed r/min that electronic control unit 4 is obtained through tach signal b; M '
AirThe air-intake of combustion engine flux signal kg/h that is obtained through air flow rate signal k for electronic control unit 4;
In the engine starting process; When electronic control unit 4 detected internal-combustion engine rotational speeds exceed starter motor and drag 20 rev/mins of rotating speeds; Electronic control unit 4 is judged the engine starting success, and this moment, electronic control unit 4 sent starter motor control signal a, cut off starter motor control relay 3; Make the starting tooth on starting gear 2 and the flywheel 1 stop engagement, and starter motor shut down; After the engine starting success; When electronic control unit 4 detected internal-combustion engine rotational speeds during more than or equal to the target idling speed; Electronic control unit 4 sends former machine fuel nozzle control signal h and hydrogen nozzle control signal i according to the former machine fuel injection signal e that obtains from former organic electronic control unit 5; Make the opening and closing of former machine fuel nozzle 9 constantly identical, and close hydrogen nozzle 10 simultaneously with former internal-combustion engine; Simultaneously; Electronic control unit 4 sends ignition module control signal g according to the former machine fire signal f that obtains from former organic electronic control unit 5; Make the internal-combustion engine ignition angle identical with former machine, and then make internal-combustion engine to move under original fuel combustion pattern, this moment, engine performance was identical with former machine.
The invention has the beneficial effects as follows: to energy waste and the emission pollution problem that traditional combustion engine is produced when idling and quick starting, the present invention provides a kind of controlling method that realizes the quick start-stop of ignition internal combustion engine with hydrogen.Whether be in vehicle stop state through idling for internal combustion engine rotating speed, car speed and throttle opening signal determining vehicle, and when stopping, extinguish internal-combustion engine, thus the high energy consumption and the emission pollution problem that are produced when significantly having reduced idling for internal combustion engine.Simultaneously, when starting, use pure hydrogen to act as a fuel, the significantly reduction of internal-combustion engine HC and CO discharging in the time of can realizing starting.In addition, the broad lean-burn boundary of hydrogen also makes with hydrogen to be that the internal-combustion engine of fuel can start under lean burn conditions, thus the fuel consumption when further reducing starting.At last, the ignition energy that hydrogen is lower and faster velocity of propagation of flame also to make with pure hydrogen be that the engine starting process of fuel is rapider, thereby realize the quick starting of internal-combustion engine.
Description of drawings
Fig. 1 structure of the present invention and fundamental diagram
Among the figure: 1 flywheel; 2 starting gears; 3 starter motor control relays; 4 electronic control units; 5 former organic electronic control units; 6 hydrogen cylinders; 7 ignition modules; 8 spark plugs; 9 former machine fuel nozzles; 10 hydrogen nozzles; 11 hydrogen pressure governors; 12 Hydrogen Vapor Pressure sensors
A. starter motor control signal; B. internal-combustion engine rotational speed signal; C. GES; D. throttle position signal; E. former machine fuel injection signal; F. former machine fire signal; G. ignition module control signal; H. former machine fuel nozzle control signal; I. hydrogen nozzle control signal; J. hydrogen cylinder pressure signal; K. air flow rate signal
Embodiment
Below in conjunction with accompanying drawing the present invention is described further:
As shown in Figure 1; A kind of device of realizing the quick start-stop of ignition internal combustion engine with hydrogen in the present embodiment; On the basis that keeps original flywheel 1, starting gear 2, starter motor control relay 3, former organic electronic control unit 5, ignition module 7, spark plug 8 and former machine fuel nozzle 9 on the internal-combustion engine, installed a cover hydrogen gas supplying apparatus and an electronic control unit 4 additional;
Described hydrogen gas supplying apparatus comprises hydrogen cylinder 6, hydrogen nozzle 10, hydrogen pressure governor 11 and Hydrogen Vapor Pressure sensor 12.Hydrogen cylinder 6 links to each other through the hydrogen supply air line with hydrogen nozzle 10; Hydrogen nozzle 10 is installed on the intake manifold of each cylinder of internal-combustion engine; Hydrogen Vapor Pressure sensor 12 is installed on the supply air line of hydrogen cylinder 6 outlets, and hydrogen pressure governor 11 is installed on the hydrogen supply air line that connects hydrogen nozzle 10 and Hydrogen Vapor Pressure sensor 12.
Described electronic control unit 4 is connected with former organic electronic control unit 5, obtains internal-combustion engine rotational speed signal b, GES c, throttle position signal d, former machine fuel injection signal e, former machine fire signal f and air flow rate signal k;
Electronic control unit 4 is connected with Hydrogen Vapor Pressure sensor 12, obtains hydrogen cylinder pressure signal j;
Electronic control unit 4 is connected with starter motor control relay 3, sends starter motor control signal a;
Electronic control unit 4 is connected with ignition module 7 and former machine fuel nozzle 9, sends ignition module control signal g and former machine fuel nozzle control signal h;
Electronic control unit 4 links to each other with the control end of hydrogen nozzle 10, is used to send hydrogen nozzle control signal i;
Described hydrogen pressure governor with hydrogen gas pressure stabilization between the 2.0bar to 3.5bar.
A kind ofly among the present invention realize that with hydrogen the ignition internal combustion engine controlling method of quick start-stop is following:
Electronic control unit 4 detects internal-combustion engine rotational speed signal b, GES c and throttle position signal d; When internal-combustion engine rotational speed is higher than normal idling or the speed of a motor vehicle and is in open mode greater than 0km/h or closure; Electronic control unit 4 judges that internal-combustion engine is in normal operating condition; At this moment; Electronic control unit 4 sends former machine fuel nozzle control signal h and hydrogen nozzle control signal i according to the former machine fuel injection signal e that obtains from former organic electronic control unit 5, makes the opening and closing of former machine fuel nozzle 9 constantly identical with former internal-combustion engine, and closes hydrogen nozzle 10 simultaneously; Simultaneously, electronic control unit 4 also sends ignition module control signal g control ignition module 7 according to the former machine fire signal f that obtains from former organic electronic control unit 5, makes the arcing of spark plug 8 constantly identical with former machine.
Electronic control unit 4 detects GES c and throttle position signal d; When internal-combustion engine rotational speed reaches normal idling speed and the speed of a motor vehicle and equals 0km/h and closure and be in closed condition; Electronic control unit 4 judges that vehicle stops in motion fully, and at this moment, electronic control unit 4 sends former machine fuel nozzle control signal h and hydrogen nozzle control signal i; Former machine fuel nozzle 9 and hydrogen nozzle 10 are closed, thereby make internal-combustion engine out of service.
When internal-combustion engine was out of service, electronic control unit 4 detected throttle position signal d, when closure is opened; Electronic control unit 4 judges that internal-combustion engine need be by quick starting, and at this moment, electronic control unit 4 at first detects hydrogen cylinder pressure signal j; When Hydrogen Vapor Pressure is lower than 5bar; Electronic control unit 4 sends starter motor control signal a, connects starter motor control relay 3, and starting gear 2 is meshed with starting tooth on the flywheel 1; Drag internal-combustion engine and begin rotation; Simultaneously, electronic control unit 4 also sends former machine fuel nozzle control signal h and hydrogen nozzle control signal i according to the former machine fuel injection signal e that obtains from former organic electronic control unit 5, makes the opening and closing of former machine fuel nozzle 9 constantly identical with former internal-combustion engine; And close hydrogen nozzle 10 simultaneously; Electronic control unit 4 also sends ignition module control signal g control ignition module 7 according to the former machine fire signal f that obtains from former organic electronic control unit 5, makes the arcing of spark plug 8 constantly identical with former machine, thereby internal-combustion engine is started with original fuel combustion pattern; When Hydrogen Vapor Pressure during more than or equal to 5bar, electronic control unit 4 judges that internal-combustion engines can use pure hydrogen to start, at this moment; Electronic control unit 4 sends starter motor control signal a, connects starter motor control relay 3, and starting gear 2 is meshed with starting tooth on the flywheel 1; Drag internal-combustion engine and begin rotation; Simultaneously, electronic control unit 4 sends former machine fuel nozzle control signal h and hydrogen nozzle control signal i, closes former machine fuel nozzle 9; And send hydrogen nozzle control signal i according to detected internal-combustion engine rotational speed signal b and air flow rate signal k and according to formula 1; Thereby the hydrogen flowing quantity that every circulation is got into internal-combustion engine is controlled, and in addition, electronic control unit 4 also sends ignition module control signal g control ignition module 7; The arcing of spark plug 8 in the engine starting process is controlled in before top dead center to the top dead center in the 10 degree scopes constantly, and postpones with the increase of spray hydrogen amount.
m
H2=m
Air/ (34.3 λ) formula 1
m
Air=2000m '
Air/ (60N) formula 2
In the formula 1, m
H2Be every circulating hydrogen emitted dose g/cycle; m
AirGet into the air quality g/cycle of internal-combustion engine for every circulation; λ is an excess air coefficient, 1.00≤λ≤9.00; N is the internal-combustion engine rotational speed r/min that electronic control unit 4 is obtained through tach signal b; M '
AirThe air-intake of combustion engine flux signal kg/h that is obtained through air flow rate signal k for electronic control unit 4;
In the engine starting process; When electronic control unit 4 detected internal-combustion engine rotational speeds exceed starter motor and drag 20 rev/mins of rotating speeds; Electronic control unit 4 is judged the engine starting success, and this moment, electronic control unit 4 sent starter motor control signal a, cut off starter motor control relay 3; Make the starting tooth on starting gear 2 and the flywheel 1 stop engagement, and starter motor shut down; After the engine starting success; When electronic control unit 4 detected internal-combustion engine rotational speeds during more than or equal to the target idling speed; Electronic control unit 4 sends former machine fuel nozzle control signal h and hydrogen nozzle control signal i according to the former machine fuel injection signal e that obtains from former organic electronic control unit 5; Make the opening and closing of former machine fuel nozzle 9 constantly identical, and close hydrogen nozzle 10 simultaneously with former internal-combustion engine; Simultaneously; Electronic control unit 4 sends ignition module control signal g according to the former machine fire signal f that obtains from former organic electronic control unit 5; Make the internal-combustion engine ignition angle identical with former machine, and then make internal-combustion engine to move under original fuel combustion pattern, this moment, engine performance was identical with former machine.
Claims (2)
1. device of realizing the quick start-stop of ignition internal combustion engine with hydrogen; It is characterized in that: on the basis that keeps original flywheel (1), starting gear (2), starter motor control relay (3), former organic electronic control unit (5), ignition module (7), spark plug (8) and former machine fuel nozzle (9) on the internal-combustion engine, installed a cover hydrogen gas supplying apparatus and an electronic control unit (4) additional;
Described hydrogen gas supplying apparatus comprises hydrogen cylinder (6), hydrogen nozzle (10), hydrogen pressure governor (11) and Hydrogen Vapor Pressure sensor (12); Hydrogen cylinder (6) links to each other through the hydrogen supply air line with hydrogen nozzle (10); Hydrogen nozzle (10) is installed on the intake manifold of each cylinder of internal-combustion engine; Hydrogen Vapor Pressure sensor (12) is installed on the supply air line of hydrogen cylinder (6) outlet, and hydrogen pressure governor (11) is installed on the hydrogen supply air line that connects hydrogen nozzle (10) and Hydrogen Vapor Pressure sensor (12);
Described electronic control unit (4) is connected with former organic electronic control unit (5), obtains internal-combustion engine rotational speed signal b, GES c, throttle position signal d, former machine fuel injection signal e, former machine fire signal f and air flow rate signal k;
Electronic control unit (4) is connected with Hydrogen Vapor Pressure sensor (12), obtains hydrogen cylinder pressure signal j;
Electronic control unit (4) is connected with starter motor control relay (3), sends starter motor control signal a;
Electronic control unit (4) is connected with ignition module (7) and former machine fuel nozzle (9), sends ignition module control signal g and former machine fuel nozzle control signal h;
Electronic control unit (4) links to each other with the control end of hydrogen nozzle (10), is used to send hydrogen nozzle control signal i;
Described hydrogen pressure governor with hydrogen gas pressure stabilization between the 2.0bar to 3.5bar.
2. according to claim 1ly a kind ofly realize it is characterized in that the controlling method of the device of the quick start-stop of ignition internal combustion engine with hydrogen:
Electronic control unit (4) detects internal-combustion engine rotational speed signal b, GES c and throttle position signal d; When internal-combustion engine rotational speed is higher than normal idling or the speed of a motor vehicle and is in open mode greater than 0km/h or closure; Electronic control unit (4) judges that internal-combustion engine is in normal operating condition; At this moment; Electronic control unit (4) sends former machine fuel nozzle control signal h and hydrogen nozzle control signal i according to the former machine fuel injection signal e that obtains from former organic electronic control unit (5), makes the opening and closing of former machine fuel nozzle (9) constantly identical with former internal-combustion engine, and closes hydrogen nozzle (10) simultaneously; Simultaneously, electronic control unit (4) also sends ignition module control signal g control ignition module (7) according to the former machine fire signal f that obtains from former organic electronic control unit (5), makes the arcing of spark plug (8) constantly identical with former machine;
Electronic control unit (4) detects GES c and throttle position signal d; When internal-combustion engine rotational speed reaches normal idling speed and the speed of a motor vehicle and equals 0km/h and closure and be in closed condition; Electronic control unit (4) judges that vehicle stops in motion fully, and at this moment, electronic control unit (4) sends former machine fuel nozzle control signal h and hydrogen nozzle control signal i; Former machine fuel nozzle (9) and hydrogen nozzle (10) are closed, thereby make internal-combustion engine out of service;
When internal-combustion engine was out of service, electronic control unit (4) detected throttle position signal d, when closure is opened; Electronic control unit (4) judges that internal-combustion engine need be by quick starting, and at this moment, electronic control unit (4) at first detects hydrogen cylinder pressure signal j; When Hydrogen Vapor Pressure is lower than 5bar; Electronic control unit (4) sends starter motor control signal a, connects starter motor control relay (3), and starting gear (2) is meshed with starting tooth on the flywheel (1); Drag internal-combustion engine and begin rotation; Simultaneously, electronic control unit (4) also sends former machine fuel nozzle control signal h and hydrogen nozzle control signal i according to the former machine fuel injection signal e that obtains from former organic electronic control unit (5), makes the opening and closing of former machine fuel nozzle (9) constantly identical with former internal-combustion engine; And close hydrogen nozzle (10) simultaneously; Electronic control unit (4) also sends ignition module control signal g control ignition module (7) according to the former machine fire signal f that obtains from former organic electronic control unit (5), makes the arcing of spark plug (8) constantly identical with former machine, thereby internal-combustion engine is started with original fuel combustion pattern; When Hydrogen Vapor Pressure during more than or equal to 5bar, electronic control unit (4) judges that internal-combustion engine can use pure hydrogen to start, at this moment; Electronic control unit (4) sends starter motor control signal a, connects starter motor control relay (3), and starting gear (2) is meshed with starting tooth on the flywheel (1); Drag internal-combustion engine and begin rotation; Simultaneously, electronic control unit (4) sends former machine fuel nozzle control signal h and hydrogen nozzle control signal i, closes former machine fuel nozzle (9); And send hydrogen nozzle control signal i according to detected internal-combustion engine rotational speed signal b and air flow rate signal k and according to formula 1; Thereby the hydrogen flowing quantity that every circulation is got into internal-combustion engine is controlled, and in addition, electronic control unit (4) also sends ignition module control signal g control ignition module (7); The arcing of spark plug in the engine starting process (8) is controlled in before top dead center to the top dead center in the 10 degree scopes constantly, and postpones with the increase of spray hydrogen amount;
m
H2=m
Air/ (34.3 λ) formula 1
m
Air=2000m '
Air/ (60N) formula 2
In the formula 1, m
H2Be every circulating hydrogen emitted dose g/cycle; m
AirGet into the air quality g/cycle of internal-combustion engine for every circulation; λ is an excess air coefficient, 1.00≤λ≤9.00; N is the internal-combustion engine rotational speed r/min that electronic control unit 4 is obtained through tach signal b; M '
AirThe air-intake of combustion engine flux signal kg/h that is obtained through air flow rate signal k for electronic control unit 4;
In the engine starting process; When the detected internal-combustion engine rotational speed of electronic control unit (4) exceeds starter motor and drags 20 rev/mins of rotating speeds; Electronic control unit (4) is judged the engine starting success, and electronic control unit this moment (4) sends starter motor control signal a, cuts off starter motor control relay (3); Make the starting tooth on starting gear (2) and the flywheel (1) stop engagement, and starter motor shut down; After the engine starting success; When the detected internal-combustion engine rotational speed of electronic control unit (4) during more than or equal to the target idling speed; Electronic control unit (4) sends former machine fuel nozzle control signal h and hydrogen nozzle control signal i according to the former machine fuel injection signal e that obtains from former organic electronic control unit (5); Make the opening and closing of former machine fuel nozzle (9) constantly identical, and close hydrogen nozzle (10) simultaneously with former internal-combustion engine; Simultaneously; Electronic control unit (4) sends ignition module control signal g according to the former machine fire signal f that obtains from former organic electronic control unit (5); Make the internal-combustion engine ignition angle identical with former machine, and then make internal-combustion engine to move under original fuel combustion pattern, this moment, engine performance was identical with former machine.
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| CN104514662A (en) * | 2013-09-29 | 2015-04-15 | 比亚迪股份有限公司 | Control method for engine starting system |
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| CN106499531A (en) * | 2016-10-16 | 2017-03-15 | 北京工业大学 | A kind of twin-jet nozzle gas/liquid double fuel in-cylinder direct-jet internal combustion engine and control method |
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