阅读说明：本技术 一种插电式发动机冷起动吸附脱附装置控制方法 (A kind of plug-in engine cold starting adsorption/desorption apparatus control method ) 是由 纪常伟 徐溥言 熊钰琨 汪硕峰 于 2019-09-05 设计创作，主要内容包括：一种插电式发动机冷起动吸附脱附装置控制方法,属于发动机排放控制领域。所述控制方法其特征在于：以发动机转速信号(a1)、发动机冷却水温度信号(a2)和吸附装置开启次数信号(e)为控制依据。通过电子控制单元(13)控制第一阀门(5)、第二阀门(11)和第三阀门(12)的开闭,使吸附装置(7)在发动机冷却水不高于40℃时开启；并在吸附装置(7)达到饱和吸附之前将吸附装置(7)旁路,避免吸附装置(7)出现提前脱附的问题。在吸附装置(7)旁路后,通过显示单元(15)提示驾驶人员进行吸附装置(7)的脱附再生。通过电源插头(10)和外部电源通电,利用脱附装置(8)对吸附装置(7)进行脱附再生。(A kind of plug-in engine cold starting adsorption/desorption apparatus control method, belongs to Exhaust Control of Engine field.The control method is it is characterized by: be control foundation with engine rotational speed signal (a1), engine cooling water temperature signal (a2) and adsorbent equipment opening times signal (e).The opening and closing that the first valve (5), the second valve (11) and third valve (12) are controlled by electronic control unit (13) opens adsorbent equipment (7) when engine cooling water is not higher than 40 DEG C；And bypass adsorbent equipment (7) before adsorbent equipment (7) reaches saturation absorption, avoid the problem that being desorbed in advance occur in adsorbent equipment (7).After adsorbent equipment (7) bypass, the desorption and regeneration of driver's progress adsorbent equipment (7) is prompted by display unit (15).It is powered by attaching plug (10) and external power supply, desorption and regeneration is carried out to adsorbent equipment (7) using desorption apparatus (8).)

1. a kind of control method of plug-in engine cold starting adsorption/desorption device, it is characterised in that: air inlet pipe (1), the 4th Valve (2), engine (3), the 4th valve (2) are connected in series by air inlet pipe (1) and engine (3)；Ternary catalyzing unit (4), Third valve (12), exhaust pipe (14), ternary catalyzing unit (4), third valve (12) are gone here and there by exhaust pipe (14) and engine (3) Connection connection；It is parallel in the downstream of third valve (12) upstream and ternary catalyzing unit (4) and adsorbs pipeline (6), the first valve (5), Adsorbent equipment (7) and the second valve (11) are sequentially connected in series in absorption pipeline (6) and by absorption pipeline (6) and third valve (12) exhaust pipe (14) is connected at downstream；Adsorbent equipment (7), desorption apparatus (8) pass through desorption pipeline (9) and the 4th valve (2) it is connected；It is provided with desorption apparatus in desorption apparatus (8) and the pollutant that adsorbent equipment (7) can be desorbed stores；Power supply Plug (10) and desorption apparatus (8) are connected in series, to external power supply needed for providing desorption apparatus (8) operation；Electronic control Unit (13) is connect and is received with display unit (15) engine rotational speed signal (a1) by display unit signal (j) line, started Machine cooling water temperature signal (a2), adsorbent equipment signal (e), attaching plug signal (f) control the first valve opening and closing (b), second Valve opening and closing (c), third valve opening and closing (d) and the 4th valve opening and closing (h) and desorption apparatus opening and closing (g)；

It is with engine rotational speed signal (a1), engine cooling water temperature signal (a2) and adsorbent equipment opening times signal (e) Foundation is controlled, is opened by electronic control unit (13) control the first valve (5), the second valve (11) and third valve (12) It closes, opens adsorbent equipment (7) when engine cooling water is not higher than 40 DEG C；And reach saturation absorption in adsorbent equipment (7) It is preceding to bypass adsorbent equipment (7), avoid the problem that being desorbed in advance occur in adsorbent equipment (7)；After adsorbent equipment (7) bypass, lead to Cross the desorption and regeneration that display unit signal (j) prompts driver to carry out adsorbent equipment (7) on display unit (15)；Pass through electricity Source plug (10) and external power supply are powered, and carry out desorption and regeneration to adsorbent equipment (7) using desorption apparatus (8).

2. plug-in engine cold starting adsorption/desorption apparatus control method according to claim 1, which is characterized in that packet Containing the following control stage:

(1) when the engine is started, electronic control unit (13) receives engine coolant temperature signal (a1), engine speed Signal (a2) and accumulative absorption times signal (h), as engine coolant temperature t_w40 DEG C of < and engine speed n_e< 1200 Rev/min and accumulative adsorption coefficient signal (h) m < m₀When, m₀It is that adsorbent material adsorption efficiency is not less than in adsorbent equipment (7) Maximum continuous absorption number when 50%；Electronic control unit (13) control is opened the first valve (5) and the second valve (11) and is closed Third valve (12) are closed, the tail gas of engine (3) discharge at this time is made to enter absorption by gas exhaust piping (14) and absorption pipeline (6) Device (7) carries out adsorption cleaning, and electronic control unit (13) record accumulative absorption times signal (h) number m=m '+1, m ' are to inhale Accumulative absorption number before attached；As engine coolant temperature t_w>=40 DEG C or engine speed n_e>=1200 revs/min or accumulative suction Attached coefficient signal (h) m >=m₀When, electronic control unit (13) control is closed the first valve (5) and the second valve (11) and is opened Third valve (12) makes the tail gas of engine (3) discharge at this time that atmosphere be discharged by gas exhaust piping (14)；

(2) electronic control unit (13) receives accumulative absorption times signal (h), as accumulative absorption times signal (h) m >=m₀When, electricity Sub-control unit (13) sends a signal to display unit (15), reminding driver's adsorbent equipment (7) to be saturated, need into Row desorption and regeneration；When electronic control unit (13) detects that attaching plug (10) is connected with external power supply, electronic control unit (13) the first valve (5) and the second valve (11) to be closed, is opened desorption apparatus (8), desorption apparatus (8) opens desorption process, if Determining the desorption process time is 20 minutes；Meanwhile electronic control unit (13) control desorption apparatus (8) will take off in adsorbent equipment (7) Attached pollutant is stored in desorption apparatus (8)；

(3) when the engine is started, electronic control unit (13) receives engine rotational speed signal (a2), as engine speed n_e≥ At 1200 revs/min, electronic control unit (13) opens the 4th valve (2), be stored in pollutant in desorption apparatus (8) into Under the action of tracheae (1) vacuum degree, burning in engine (3) is entered after desorption pipeline (9) is via air inlet pipe (1).

Technical field

The invention belongs to Exhaust Control of Engine fields, and in particular to a kind of plug-in engine cold starting adsorption/desorption dress Set control method.

Background technique

Since engine cold starting stage ternary catalyzing unit cannot reach operating temperature, engine cold starting stage HC discharge It cannot effectively be converted, control unit ECU needs increasing fuel the amount of injection to guarantee that engine smoothly starts, largely in addition Unburned fuel is discharged among atmosphere in the form of HC.Show in the test of NEDC state of cyclic operation according to related test result, 90% HC discharge results from the engine cold starting stage.Therefore, the discharge of engine cold starting stage polluted gas is reduced Continue to develop one of major issue urgently to be resolved as internal combustion engine.For adsorption technology because its cryogenic high pressure adsorbs, high-temperature low-pressure is de- Attached feature is a kind of effective means for solving engine cold starting stage HC discharge.According to associated stand test result, in ring Under conditions of border temperature is 20 DEG C, 75% or more of engine cold starting stage HC discharge, which can be adsorbed on, placed adsorption material Among the adsorbent equipment of material.

Currently, limitation adsorbent equipment application technical bottleneck be how to realize the desorption and regeneration of adsorbent material, it is common with Vehicle desorption and regeneration technology is limited to desorption time and travel condition of vehicle, and adsorbent material is tended not to thoroughly be desorbed, then be influenced Adsorption efficiency when being adsorbed again to adsorbent equipment.And desorption apparatus is limited to on-vehicle battery system and can not thus transport for a long time Row.Currently, the construction scale with electric car auxiliary facility gradually expands, one is provided for the desorption of engine adsorbent equipment New direction.

Therefore, designing one kind not only can be effectively reduced engine cold starting stage HC discharge, but also adsorbent material may be implemented The adsorbent equipment of abundant desorption and regeneration seem particularly necessary.

Summary of the invention:

The object of the present invention is to provide a kind of plug-in engine cold starting adsorption/desorption apparatus control method, the device with Engine rotational speed signal (a1), engine cooling water temperature signal (a2) and adsorbent equipment opening times signal (e) be control according to According to.The opening and closing that the first valve (5), the second valve (11) and third valve (12) are controlled by electronic control unit (13), makes to inhale Adsorption device (7) is opened when engine cooling water is not higher than 40 DEG C；And it will absorption before adsorbent equipment (7) reaches saturation absorption Device (7) bypass avoids the problem that being desorbed in advance occur in adsorbent equipment (7).It is single by display after adsorbent equipment (7) bypass First (15) prompt driver carries out the desorption and regeneration of adsorbent equipment (7).It is powered by attaching plug (10) and external power supply, benefit Desorption and regeneration is carried out to adsorbent equipment (7) with desorption apparatus (8).

In order to achieve the purpose that reduce the abundant desorption and regeneration for discharging and guaranteeing adsorbent material in engine startup, this A kind of invention plug-in engine cold starting adsorption/desorption apparatus control method the present invention adopts the following technical scheme:

Air inlet pipe (1), the 4th valve (2), engine (3), the 4th valve (2) are gone here and there by air inlet pipe (1) and engine (3) Connection connection；Ternary catalyzing unit (4), third valve (12), exhaust pipe (14), ternary catalyzing unit (4), third valve (12) pass through row Tracheae (14) and engine (3) are connected in series；Absorption is parallel in the downstream of third valve (12) upstream and ternary catalyzing unit (4) Pipeline (6), the first valve (5), adsorbent equipment (7) and the second valve (11) be sequentially connected in series in absorption pipeline (6) on and pass through suction Attached pipeline (6) is connected with exhaust pipe (14) at third valve (12) downstream.Adsorbent equipment (7), desorption apparatus (8) pass through desorption Pipeline (9) is connected with the 4th valve (2).Desorption apparatus is provided in the desorption apparatus (8) and can be by adsorbent equipment (7) The pollutant of desorption stores.Attaching plug (10) and desorption apparatus (8) are connected in series, to provide desorption apparatus (8) operation institute The external power supply needed.Electronic control unit (13) connect with display unit (15) by display unit signal (j) line and receives hair Motivation tach signal (a1), engine cooling water temperature signal (a2), adsorbent equipment signal (e), attaching plug signal (f), control Make the first valve opening and closing (b), the second valve opening and closing (c), third valve opening and closing (d) and the 4th valve opening and closing (h) and desorption dress Set opening and closing (g).

When the engine is started, electronic control unit (13) receives engine coolant temperature signal (a1), engine turns Fast signal (a2) and accumulative absorption times signal (h), as engine coolant temperature t_w40 DEG C of < and engine speed n_e< 1200 Rev/min and accumulative adsorption coefficient signal (h) m < m₀(m₀When being that adsorbent material adsorption efficiency is not less than μ % in adsorbent equipment (7) Maximum continuous absorption number) when, the first valve (5) and the second valve (11) and closing the is opened in electronic control unit (13) control Three valves (12) make the tail gas of engine (3) discharge at this time enter adsorbent equipment by gas exhaust piping (14) and absorption pipeline (6) (7) adsorption cleaning is carried out, accumulative absorption times signal (h) the number m=m '+1 of electronic control unit (13) record is (before m ' is absorption Accumulative absorption number).As engine coolant temperature t_w>=40 DEG C or engine speed n_e>=1200 revs/min or accumulative absorption Coefficient signal (h) m >=m₀When, the first valve (5) and the second valve (11) and opening the is closed in electronic control unit (13) control Three valves (12) make the tail gas of engine (3) discharge at this time that atmosphere be discharged by gas exhaust piping (14).

Electronic control unit (13) receives accumulative absorption times signal (h), as accumulative absorption times signal (h) m >=m₀When, Electronic control unit (13) sends a signal to display unit (15), to remind driver's adsorbent equipment (7) to be saturated, needs Carry out desorption and regeneration.When electronic control unit (13) detects that attaching plug (10) is connected with external power supply, electronic control is single First (13) close the first valve (5) and the second valve (11), open desorption apparatus (8), and desorption apparatus (8) opens desorption process, Setting time is 20 minutes.Meanwhile the dirt that electronic control unit (13) control desorption apparatus (8) will be desorbed in adsorbent equipment (7) Dye object is stored in desorption apparatus (8).

When the engine is started, electronic control unit (13) receives engine rotational speed signal (a2), as engine speed n_e At >=1200 revs/min, electronic control unit (13) opens the 4th valve (2), and the pollutant being stored in desorption apparatus (8) exists Under the action of air inlet pipe (1) vacuum degree, burning in engine (3) is entered after desorption pipeline (9) is via air inlet pipe (1).

The present invention is directed to propose a kind of plug-in engine cold starting adsorption/desorption apparatus control method, its advantage is that:

This method device is opened adsorbent equipment only when engine cooling water is not higher than 40 DEG C and is reached in adsorbent equipment It is bypassed before to saturation absorption, guarantees to avoid asking of being desorbed in advance while adsorbent equipment higher single adsorptions efficiency Topic.Electric power is provided for adsorbent equipment desorption and regeneration by electric external power supply energization benefit, the desorption rate of adsorbent equipment is improved, solves The problem of adsorbent equipment is with vehicle difficult desorption has certain novelty and application prospect.

Detailed description of the invention

Structure and working principle diagram Fig. 1 of the invention

In figure: 1, air inlet pipe, the 2, the 4th valve, 3, engine, 4, ternary catalyzing unit, the 5, first valve, 6, absorption pipeline, 7, adsorbent equipment, 8, desorption apparatus, 9, desorption pipeline, 10, attaching plug, the 11, second valve, 12, third valve, 13, electronics Control unit, 14, exhaust pipe, 15, display unit

HC discharges continuous adsorption curve figure when Fig. 2 show absorbent charcoal material to engine start.By curvilinear motion in figure Trend can be seen that the increase with absorption number, and HC discharge shows the trend gradually increased after absorption, this shows adsorption material During continuous absorption, adsorption efficiency is gradually reduced material.Therefore, in order to guarantee the adsorption efficiencies of single adsorptions not less than certain One numerical value (such as 50%), then need to set maximum adsorption number.

HC discharges continuous adsorption efficiency figure when Fig. 3 show absorbent charcoal material to engine start.As seen from the figure, In In continuous adsorption process, adsorption efficiency is gradually decayed due to micropore saturation.Therefore, in order to guarantee the adsorption efficiency of single adsorptions not Lower than a certain numerical value (such as μ 50%), then need to set maximum adsorption number.It is under conditions of active carbon loading 300g in figure 3 times.

Pollutant desorption curve when Fig. 4 show electric heating.As seen from the figure, when using external power supply heating desorption When tactful, heating device can be brought rapidly up, and pollutant is desorbed rapidly immediately, and efficiency is desorbed in 20 minutes can achieve 80% More than.

Specific embodiment

The present invention is described further with reference to the accompanying drawings and detailed description:

The object of the present invention is to provide a kind of plug-in engine cold starting adsorption/desorption apparatus control method, the device with Engine rotational speed signal (a1), engine cooling water temperature signal (a2) and adsorbent equipment opening times signal (e) be control according to According to.The opening and closing that the first valve (5), the second valve (11) and third valve (12) are controlled by electronic control unit (13), makes to inhale Adsorption device (7) is opened when engine cooling water is not higher than 40 DEG C；And it will absorption before adsorbent equipment (7) reaches saturation absorption Device (7) bypass avoids the problem that being desorbed in advance occur in adsorbent equipment (7).It is single by display after adsorbent equipment (7) bypass First (15) prompt driver carries out the desorption and regeneration of adsorbent equipment (7).It is powered by attaching plug (10) and external power supply, benefit Desorption and regeneration is carried out to adsorbent equipment (7) with desorption apparatus (8).

In order to achieve the purpose that reduce the abundant desorption and regeneration for discharging and guaranteeing adsorbent material in engine startup, this A kind of invention plug-in engine cold starting adsorption/desorption apparatus control method the present invention adopts the following technical scheme:

If Fig. 1 includes: air inlet pipe (1), the 4th valve (2), engine (3), the 4th valve (2) by air inlet pipe (1) with Engine (3) is connected in series；Ternary catalyzing unit (4), third valve (12), exhaust pipe (14), ternary catalyzing unit (4), third valve Door (12) is connected in series by exhaust pipe (14) and engine (3)；Under third valve (12) upstream and ternary catalyzing unit (4) Trip is parallel with absorption pipeline (6), and the first valve (5), adsorbent equipment (7) and the second valve (11) are sequentially connected in series in absorption pipeline (6) it is connected on and by adsorbing pipeline (6) with exhaust pipe (14) at third valve (12) downstream.Adsorbent equipment (7), desorption dress It sets (8) and is connected by the way that pipeline (9) are desorbed with the 4th valve (2).Desorption apparatus is provided in the desorption apparatus (8) and can be with By the pollutant storage of adsorbent equipment (7) desorption.Attaching plug (10) and desorption apparatus (8) are connected in series, to provide desorption External power supply needed for device (8) operation.Electronic control unit (13) passes through display unit signal (j) line and display unit (15) Engine rotational speed signal (a1), engine cooling water temperature signal (a2), adsorbent equipment signal (e), power supply is connected and receives to insert Head signal (f), the first valve opening and closing (b) of control, the second valve opening and closing (c), third valve opening and closing (d) and the 4th valve opening and closing (h) and desorption apparatus is opened and closed (g).

When the engine is started, electronic control unit (13) receives engine coolant temperature signal (a1), engine turns Fast signal (a2) and accumulative absorption times signal (h), as engine coolant temperature t_w40 DEG C of < and engine speed n_e< 1200 Rev/min and accumulative adsorption coefficient signal (h) m < m₀(m₀It is that adsorbent material adsorption efficiency is not less than 50% in adsorbent equipment (7) When maximum continuous absorption number) when, at this time, it is believed that engine (3) is in cold-start phase and adsorbent equipment (7) is also unadsorbed Saturation, therefore, electronic control unit (13) control open the first valve (5) and the second valve (11) and close third valve (12), make the tail gas of the discharge of engine (3) at this time by gas exhaust piping (14) and absorption pipeline (6) into adsorbent equipment (7) into Row adsorption cleaning, (m ' is accumulative before adsorbing to accumulative absorption times signal (h) the number m=m '+1 of electronic control unit (13) record Adsorb number).As engine coolant temperature t_w>=40 DEG C or engine speed n_e>=1200 revs/min or accumulative adsorption coefficient letter Number (h) m >=m₀When, at this time, it is believed that engine (3) cold-start phase is over or adsorbent equipment (7) adsorption saturation, Therefore, electronic control unit (13) control is closed the first valve (5) and the second valve (11) and is opened third valve (12), makes this When engine (3) be discharged tail gas by gas exhaust piping (14) be discharged atmosphere.

Electronic control unit (13) receives accumulative absorption times signal (h), as accumulative absorption times signal (h) m >=m₀When, Electronic control unit (13) sends a signal to display unit (15), to remind driver's adsorbent equipment (7) to be saturated, needs Carry out desorption and regeneration.When driver connect external power supply after, i.e., electronic control unit (13) detect attaching plug (10) and outside When portion's power supply is connected, electronic control unit (13) closes the first valve (5) and the second valve (11), opens desorption apparatus (8), takes off Adsorption device (8) opens desorption process, and setting time is 20 minutes.Meanwhile electronic control unit (13) control desorption apparatus (8) will The pollutant being desorbed in adsorbent equipment (7) is stored in desorption apparatus (8).

When the engine is started, electronic control unit (13) receives engine rotational speed signal (a2), as engine speed n_e At >=1200 revs/min, at this time, it is believed that engine (3) has run smoothly, therefore, electronic control unit (13) opens the 4th valve (2), be stored in the pollutant in desorption apparatus (8) under the action of air inlet pipe (1) vacuum degree, by desorption pipeline (9) via Air inlet pipe (1) enters burning in engine (3) afterwards.

The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.