CN111963351A - Compression ignition engine cold start catalytic heating auxiliary device - Google Patents
Compression ignition engine cold start catalytic heating auxiliary device Download PDFInfo
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- CN111963351A CN111963351A CN202010789603.XA CN202010789603A CN111963351A CN 111963351 A CN111963351 A CN 111963351A CN 202010789603 A CN202010789603 A CN 202010789603A CN 111963351 A CN111963351 A CN 111963351A
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- Prior art keywords
- exhaust
- ignition
- temperature
- bypass valve
- catalytic
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N19/00—Starting aids for combustion engines, not otherwise provided for
- F02N19/02—Aiding engine start by thermal means, e.g. using lighted wicks
- F02N19/04—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
- F01N3/2033—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using a fuel burner or introducing fuel into exhaust duct
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
- F01N3/204—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using an exhaust gas igniter, e.g. a spark or glow plug, without introducing fuel into exhaust duct
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D41/0047—Controlling exhaust gas recirculation [EGR]
- F02D41/005—Controlling exhaust gas recirculation [EGR] according to engine operating conditions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
- F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
- F02D41/064—Introducing corrections for particular operating conditions for engine starting or warming up for starting at cold start
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/35—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with means for cleaning or treating the recirculated gases, e.g. catalysts, condensate traps, particle filters or heaters
Abstract
The invention provides a compression ignition engine cold start catalytic heating auxiliary device, which comprises an exhaust temperature sensor, an exhaust bypass valve, an ignition heater, a catalytic oxidizer, a one-way valve and an ignition temperature control unit, wherein the exhaust temperature sensor is connected with the exhaust bypass valve; the inlet of the exhaust bypass valve is communicated with an exhaust pipeline of the cylinder, and one outlet of the exhaust bypass valve is sequentially connected with the ignition heater, the catalytic oxidizer, the one-way valve and an air inlet pipeline of the cylinder through pipelines; the ignition temperature control unit controls the execution of the ignition heater and the opening of the exhaust bypass valve according to the collected measurement data of the exhaust temperature sensor; the ignition temperature control unit sets a temperature threshold according to the working characteristics of a catalyst in the catalytic oxidizer. The invention introduces an ignition heating and catalytic oxidation device in a traditional Exhaust Gas Recirculation (EGR) loop, and realizes the technical effect of instantly improving the intake temperature in a low-temperature environment by utilizing a two-stage heating mode.
Description
Technical Field
The invention belongs to the technical field of compression ignition engines, and particularly relates to a cold start catalytic heating auxiliary device of a compression ignition engine.
Background
Compared with an ignition type engine, the compression ignition type engine has the characteristics of high combustion efficiency, simple structure and high reliability. But the cold start is very difficult in the high and cold environment, and the normal use of the compression ignition engine is severely restricted. For example, in winter in Qinghai-Tibet plateau areas of China, the heating speed is low because a heating boiler needs to be started for heating when a heavy diesel engine is started, the heating time of individual areas is as long as more than 30 minutes, and the energy utilization rate is greatly reduced.
The factors affecting the cold start performance are many, and the most prominent problem is the inefficient combustion of the cold start process in a low temperature environment. Research shows that in-cylinder fuel atomization is deteriorated under the condition of low-temperature cold start, the fuel wall wetting amount is increased, and in addition, the wall surface temperature of a combustion chamber is low, the evaporation speed of a wall-attached oil film is slow, so that the oil-gas mixing is insufficient, the combustion efficiency is low, unburned hydrocarbon is increased, and the engine emits white smoke. Meanwhile, because the temperature of the engine body is low, the resistance moment is increased, and the abrasion rate of the engine and the damage rate of parts are greatly increased.
Therefore, the initial condition of combustion in the cylinder is improved by optimizing the intake working medium state during cold start, and the low-temperature cold start performance of the compression ignition engine can be fundamentally improved. The common cold starting auxiliary mode mostly adopts measures such as air inlet heating, a preheating plug and the like, but in a high and cold environment, the measures expose the defects of low preheating speed and small heating area, and the problem of difficult cold starting of the heavy diesel engine in a low-temperature environment cannot be solved.
Disclosure of Invention
In view of the above, the present invention is directed to a cold start catalytic heating auxiliary device for a compression ignition engine, which is capable of re-connecting unburned hydrocarbons in exhaust gas of the compression ignition engine to an intake pipe through catalytic oxidation heating, thereby increasing the temperature and reactivity of an intake working medium, improving the cold start fuel atomization quality and ignition stability, shortening the cold start time, and improving the low temperature start performance of the engine.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a compression ignition engine cold start catalytic heating auxiliary device comprises an exhaust temperature sensor, an exhaust bypass valve, an ignition heater, a catalytic oxidizer, a one-way valve and an ignition temperature control unit;
the inlet of the exhaust bypass valve is communicated with an exhaust pipeline of the cylinder, one outlet of the exhaust bypass valve is sequentially connected with the ignition heater, the catalytic oxidizer, the one-way valve and an air inlet pipeline of the cylinder through pipelines, and the other outlet of the exhaust bypass valve is connected with an exhaust structure of the engine through a pipeline;
the ignition temperature control unit controls the execution of the ignition heater and the opening of the exhaust bypass valve according to the collected measurement data of the exhaust temperature sensor; the ignition temperature control unit sets a temperature threshold according to the working characteristics of a catalyst in the catalytic oxidizer.
Further, a combustion-supporting fuel injector is arranged in the ignition heater
Compared with the prior art, the auxiliary device has the following advantages:
(1) the ignition heating and catalytic oxidation device is introduced into a traditional Exhaust Gas Recirculation (EGR) loop, and the technical effect of instantly improving the air inlet temperature in the low-temperature environment is realized by utilizing a two-stage heating mode; meanwhile, the exhaust gas passes through the catalytic oxidizer, so that the emission performance is greatly improved, and the problem of white smoke emission in cold start is avoided.
(2) The invention realizes multi-mode work through the ignition temperature control unit, and has flexible control and high energy utilization rate. When the exhaust temperature is lower than the lower temperature threshold value, the ignition heating and catalytic oxidizer are started, and the two-stage heating mode is adopted; when the exhaust temperature is higher than the lower temperature threshold, the ignition heater is turned off, and the method belongs to a first-stage heating mode; the catalytic oxidizer can work efficiently in two modes of primary heating (catalytic oxidation) and secondary heating (ignition heating and catalytic oxidation), and is flexible and simple to control and high in energy utilization rate.
(3) Compared with the existing heating pot used in the severe cold environment, the invention greatly reduces the occupied space, shortens the cold start time and improves the low-temperature start performance of the engine.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of a cold start catalytic heating auxiliary device according to an embodiment of the present invention;
FIG. 2 is a schematic block diagram of a one-stage heating mode according to an embodiment of the present invention;
fig. 3 is a schematic diagram of control commands of the ignition temperature control unit according to the embodiment of the present invention.
Description of reference numerals:
1-an exhaust line; 2-an exhaust gas temperature sensor; 3-an exhaust bypass valve; 4-a combustion-supporting fuel injector; 5-an ignition heater; 6-a catalytic oxidizer; 7-a one-way valve; 8-an air inlet pipeline; 9-a cylinder; 10-an ignition temperature control unit; 11-cold start; 12-exhaust temperature detection; 13-judging that the exhaust temperature is higher than the upper limit of the catalytic oxidation temperature; 14-closing the exhaust bypass valve; 15-opening the exhaust bypass valve; 16-judging that the exhaust temperature is higher than the lower limit of the catalytic oxidation temperature; 17-primary heating; 18-closing the combustion fuel injector; 19-turning off the ignition heater; 20-secondary heating; 21-opening the combustion-supporting fuel injector; 22-turn on the ignition heater.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to improve the cold start performance in the low-temperature environment of a heavy-duty diesel engine, the compression-ignition engine cold start catalytic heating auxiliary device of the embodiment of the invention comprises an exhaust temperature sensor 2, an exhaust bypass valve 3, an ignition heater 5, a catalytic oxidizer 6, a check valve 7 and an ignition temperature control unit 10, wherein a combustion-supporting fuel injector 4 is arranged in the ignition heater 5;
the inlet of the exhaust bypass valve 3 is communicated with an exhaust pipeline 1 of a cylinder 9, one outlet is sequentially connected with an ignition heater 5, a catalytic oxidizer 6, a one-way valve 7 and an air inlet pipeline 8 of the cylinder 9 through pipelines, and the other outlet is connected with an exhaust structure of an engine through a pipeline;
the exhaust temperature sensor 2 is arranged on an exhaust pipeline 1 at the front end of an inlet of the exhaust bypass valve 3, and the ignition temperature control unit 10 is in signal connection with the exhaust temperature sensor 2, the combustion-supporting fuel injector 4, the ignition heater 5 and the exhaust bypass valve 3.
The exhaust gas in the cylinder 9 is partially exhausted into the atmosphere through the exhaust bypass valve 3, and partially passes through the ignition heater and the catalytic oxidizer and then flows into the air inlet pipeline again through the one-way valve to return to the cylinder; the exhaust bypass valve controls the opening through the ignition temperature control unit, and further adjusts the exhaust flow entering the paths of the ignition heater and the catalytic oxidizer.
The exhaust bypass valve 3 regulates the flow of exhaust gas entering the paths of the ignition heater 5 and the catalytic oxidizer 6.
The check valve 7 is used for preventing air inflow backflow and adopts a low flow resistance membrane type structure.
The ignition temperature control unit 10 controls the execution of the combustion-supporting fuel injector 4 and the ignition heater 5, and the opening degree of the exhaust bypass valve 3, based on the data measured by the exhaust temperature sensor 2.
The ignition temperature control unit 10 sets a temperature threshold value according to the operating characteristics of the catalyst in the catalytic oxidizer 6, including an upper catalytic oxidation temperature limit value and a lower catalytic oxidation temperature limit value.
The combustion-supporting fuel injector 4 is used for injecting volatile fuel, such as methanol, gasoline and the like, and the exhaust temperature is improved by igniting and releasing heat through the volatile fuel, so that the normal operation of catalytic oxidation is ensured.
As shown in fig. 3, the control modes of the ignition temperature control unit 10 are divided into three, a first-stage heating 17, a second-stage heating 20, and a closing of the exhaust bypass valve 14. The specific working principle is as follows:
when the engine is in cold start 11, the exhaust temperature is judged to be higher than the upper limit 13 of the catalytic oxidation temperature through the exhaust temperature detection 12, if the state is 'true', the exhaust bypass valve 14 is closed, and the exhaust is directly exhausted to the atmosphere; if the status is "false", the opening of the exhaust bypass valve 15 is executed;
further, judging that the exhaust temperature is greater than the lower limit 16 of the catalytic oxidation temperature is carried out, if the state is 'true', entering a primary heating mode 17, as shown in fig. 2, closing a combustion-supporting fuel injector 18 and closing an ignition heater 19, after the exhaust gas is heated by the catalytic oxidizer 6, entering an air inlet pipeline 8 through a one-way valve 7, and entering the cylinder 9 again; if the state is false, the method enters a secondary heating mode 20, starts a combustion-supporting fuel injector 21, starts an ignition heater 22, increases the temperature of the exhaust gas to be above the temperature threshold of the catalytic oxidizer 6 through the ignition heater 5, further increases the temperature through the surface oxidation heat release of the catalytic oxidizer 6, and finally enters an air inlet pipeline 8 through a check valve 7 to enter the cylinder 9 again.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (3)
1. A compression ignition engine cold start catalytic heating auxiliary device is characterized in that: the device comprises an exhaust temperature sensor, an exhaust bypass valve, an ignition heater, a catalytic oxidizer, a one-way valve and an ignition temperature control unit;
the inlet of the exhaust bypass valve is communicated with an exhaust pipeline of the cylinder, one outlet of the exhaust bypass valve is sequentially connected with the ignition heater, the catalytic oxidizer, the one-way valve and an air inlet pipeline of the cylinder through pipelines, and the other outlet of the exhaust bypass valve is connected with an exhaust structure of the engine through a pipeline;
the ignition temperature control unit controls the execution of the ignition heater and the opening of the exhaust bypass valve according to the collected measurement data of the exhaust temperature sensor; the ignition temperature control unit sets a temperature threshold according to the working characteristics of a catalyst in the catalytic oxidizer.
2. A compression ignition engine cold start catalytic heating auxiliary apparatus as claimed in claim 1, characterised in that: and a combustion-supporting fuel injector is arranged in the ignition heater.
3. A compression ignition engine cold start catalytic heating auxiliary apparatus as claimed in claim 2, characterised in that: the control modes of the ignition temperature control unit are divided into three modes, namely a first-stage heating mode, a second-stage heating mode and a mode of closing an exhaust bypass valve, and the specific working method is as follows:
firstly, when an engine is in cold start, acquiring exhaust temperature through an exhaust temperature sensor, judging whether the exhaust temperature is greater than a preset upper limit of catalytic oxidation temperature, if so, entering a mode of closing an exhaust bypass valve, namely closing the exhaust bypass valve, and otherwise, opening the exhaust bypass valve;
then, judging whether the exhaust temperature is greater than a preset lower limit of catalytic oxidation temperature, if so, entering a first-stage heating mode, closing a combustion-supporting fuel injector and an ignition heater, heating the exhaust through a catalytic oxidizer, then entering an air inlet pipeline through a one-way valve, and entering the air cylinder again; if not, the exhaust enters a secondary heating mode, a combustion-supporting fuel injector and an ignition heater are started, when the temperature of the exhaust is increased to the lower limit of the catalytic oxidation temperature through the ignition heater, the exhaust is further increased in temperature through the surface oxidation heat release of a catalytic oxidizer, and finally the exhaust enters an air inlet pipeline through a one-way valve and enters the cylinder again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010789603.XA CN111963351B (en) | 2020-08-07 | 2020-08-07 | Compression ignition engine cold start catalytic heating auxiliary device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010789603.XA CN111963351B (en) | 2020-08-07 | 2020-08-07 | Compression ignition engine cold start catalytic heating auxiliary device |
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| Publication Number | Publication Date |
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| CN111963351A true CN111963351A (en) | 2020-11-20 |
| CN111963351B CN111963351B (en) | 2022-04-05 |
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| CN202010789603.XA Active CN111963351B (en) | 2020-08-07 | 2020-08-07 | Compression ignition engine cold start catalytic heating auxiliary device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10005490A1 (en) * | 2000-02-08 | 2001-08-16 | Bosch Gmbh Robert | Heating system for motor vehicle driven by IC engine which has heater with combustion chamber and fuel injection system also ignition unit and air blower and is controlled depending on operating parameters |
| JP2002138908A (en) * | 2000-11-02 | 2002-05-17 | Toyota Motor Corp | Cylinder injection spark ignition type internal combustion engine |
| US20040118106A1 (en) * | 2002-12-19 | 2004-06-24 | Liang Cho Y. | Emissions control system for increasing selective catalytic reduction efficiency |
| JP2005002975A (en) * | 2003-06-16 | 2005-01-06 | Nissan Diesel Motor Co Ltd | Exhaust purification device for engine |
| CN102239324A (en) * | 2010-02-17 | 2011-11-09 | 丰田自动车株式会社 | Exhaust device of internal combustion engine |
-
2020
- 2020-08-07 CN CN202010789603.XA patent/CN111963351B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10005490A1 (en) * | 2000-02-08 | 2001-08-16 | Bosch Gmbh Robert | Heating system for motor vehicle driven by IC engine which has heater with combustion chamber and fuel injection system also ignition unit and air blower and is controlled depending on operating parameters |
| JP2002138908A (en) * | 2000-11-02 | 2002-05-17 | Toyota Motor Corp | Cylinder injection spark ignition type internal combustion engine |
| US20040118106A1 (en) * | 2002-12-19 | 2004-06-24 | Liang Cho Y. | Emissions control system for increasing selective catalytic reduction efficiency |
| JP2005002975A (en) * | 2003-06-16 | 2005-01-06 | Nissan Diesel Motor Co Ltd | Exhaust purification device for engine |
| CN102239324A (en) * | 2010-02-17 | 2011-11-09 | 丰田自动车株式会社 | Exhaust device of internal combustion engine |
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| Publication number | Publication date |
|---|---|
| CN111963351B (en) | 2022-04-05 |
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