JP6398597B2 - Intake condensate treatment equipment - Google Patents

Description

  The present invention relates to an intake condensed water treatment apparatus that suppresses the condensation of moisture contained in intake air of an engine and the retention of the condensed water in an intake passage.

  In order to reduce nitrogen oxide (NOx) contained in the exhaust gas discharged from the engine, an exhaust gas recirculation device that recirculates a part of the exhaust gas to the combustion chamber is used.

  In such an exhaust gas recirculation device, in order to further reduce the generation of nitrogen oxides, the temperature of the exhaust gas recirculated to the combustion chamber (hereinafter referred to as “reflux gas”) is changed to a cooling device (hereinafter referred to as “ It is lowered by a “reflux gas cooler”).

  There is also a low-pressure exhaust gas recirculation device for taking out the reflux gas from the exhaust turbine of the supercharger or the downstream side of the catalyst in order to reduce the temperature of the reflux gas. In the low-pressure exhaust gas recirculation device, a recirculation gas cooler is provided in the recirculation passage, and further cooling processing is performed such that the recirculation gas is recirculated to the intake air and then passed through an intake air cooling device such as an intercooler.

  However, in the above-described intake air cooling device, particularly in cold weather, the wall surface temperature in the intake air cooling device may fall below the dew point of the water vapor in the reflux gas. In such a case, water vapor contained in the reflux gas is condensed in the intake air cooling device, and the condensed water stays inside the intake passage.

  It is desirable that the condensed water inside the intake passage is re-evaporated and supplied to the combustion chamber little by little when the temperature condition changes. This is because the condensed water contains an acidic component contained in the reflux gas and cannot be drained to the outside as it is.

  However, if the state where re-evaporation cannot be continued continues, the amount of condensed water gradually increases, which causes corrosion of each member of the intake system, which is not preferable. Furthermore, if condensed water stays long, it will also lead to the acidic component contained in the condensed water being concentrated gradually.

  Further, when the amount of the condensate that stays increases, it may cause a pressure loss in the intake system, and may cause a decrease in engine output. Further, under operating conditions with a large intake amount, a large amount of condensed water flows into the combustion chamber along with a strong intake flow, which may lead to deterioration of combustion.

  Therefore, in Patent Document 1, an atomization device is provided at the outlet of the intake air cooling device, and it is estimated whether or not condensed water is retained from the intake air amount and the introduced amount of the reflux gas. The atomizer is operated.

Japanese Unexamined Patent Application Publication No. 2014-25459 (refer to Claims 1 and 5, description paragraphs 0040 to 0047, etc.)

  The technique of Patent Document 1 can reduce the retention amount to some extent by forcibly atomizing the condensed water in the intake passage and sending it to the combustion chamber.

  However, the operation of the atomizing device continues for a predetermined time or longer in a state where the recirculated gas is introduced and the amount of intake air passing through the intake air cooling device is equal to or less than a certain amount (condensed water tends to stay). It's just a case. For this reason, it cannot be said that the countermeasures are taken by accurately reflecting the condensate retention state in the intake passage. That is, depending on the operating conditions, there is no denying the fear that a large amount of condensed water will remain in the intake passage. However, it is not economical to always operate the atomizing device in order to eliminate the stay of condensed water, which deteriorates fuel consumption.

  Therefore, an object of the present invention is to prevent a large amount of condensed water from staying in the intake passage.

  In order to solve the above-described problems, the present invention provides an intake air cooling device disposed in an intake passage of an engine, and a part of the exhaust gas from the exhaust passage of the engine as a recirculation gas to the intake passage upstream of the intake air cooling device. An exhaust gas recirculation passage for recirculation, a moisture amount estimation means for estimating the amount of water contained in the intake air passing through the intake passage, the intake air cooling device or an atomization device disposed in the intake passage downstream thereof, An atomizing device control means for controlling the operation of the atomizing device, wherein the atomizing device control means is configured such that the water amount estimated by the water amount estimating means is a saturated water vapor amount at the temperature of the wall surface in the intake passage. The intake condensate treatment device is employed that operates the atomization device when the amount of water exceeds the value, and stops the operation of the atomization device when the amount is less than the saturated water vapor amount.

  Further, the apparatus includes a condensed water detection unit that detects a retention amount of the condensed water staying in the intake passage, and the atomizer control unit is configured so that the retention amount estimated by the condensed water detection unit exceeds a predetermined amount. It can be set as the structure which operates the said atomization apparatus and stops the operation | movement of the said atomization apparatus when it is below a predetermined amount.

  Further, it is possible to employ an arrangement in which an atmospheric temperature detecting device for detecting the atmospheric temperature is provided, and the wall surface temperature in the intake passage is estimated based on the atmospheric temperature. Furthermore, it is possible to employ a configuration in which the wall surface temperature in the intake passage is estimated to be equal to the atmospheric temperature.

  Condensed water integrating means for integrating the moisture content of the intake air estimated by the moisture content estimating means based on the intake air amount passing through the intake passage is provided, and the atomizer control means is configured so that the water content is the saturated water vapor amount. Even when it becomes the following, the configuration in which the operation of the atomizing device is continued until the accumulated amount calculated by the condensed water integrating means becomes equal to or less than the atomizing amount atomized by the atomizing device. Can be adopted.

  The moisture content of the intake air estimated by the moisture content estimation means can be configured to be estimated by the sum of the moisture content contained in the intake air from the outside and the moisture content contained in the reflux gas.

  At this time, it is possible to adopt a configuration in which the amount of water contained in the recirculation gas is estimated by multiplying the mass ratio of water in the exhaust gas from the combustion chamber by the mass of the recirculation gas introduced.

  The moisture mass ratio in the exhaust from the combustion chamber is estimated by the ratio of the moisture mass in the exhaust from the combustion chamber to the exhaust gas mass from the combustion chamber, and the moisture mass in the exhaust from the combustion chamber. Can adopt a configuration estimated by the sum of the amount of moisture contained in the intake air from the outside, the amount of moisture contained in the recirculation gas, and the amount of combustion-generated moisture.

  Furthermore, the amount of moisture contained in the intake air from the outside is estimated by multiplying the saturated water vapor amount of the outside air by the relative humidity and the mass of the intake air from the outside, and the amount of combustion generated moisture is calculated by multiplying the mass of fuel consumed by the fuel It is possible to employ a configuration estimated by multiplying the ratio of the mass per 1 mol of water to the mass per 1 mol of the water by the ratio of the number of moles of water generated per 1 mol of fuel.

  According to the present invention, the atomizing device provided in the intake passage operates when the amount of water estimated by the water amount estimation means exceeds the saturated water vapor amount at the wall surface temperature in the intake passage, and is equal to or less than the saturated water vapor amount. In this case, since the operation is stopped, the condensed water in the intake passage is appropriately atomized each time it is generated and sent to the combustion chamber together with the intake air. For this reason, it is possible to prevent a large amount of condensed water from staying in the intake passage.

1 is an overall view showing an embodiment of the present invention. It is explanatory drawing which shows the state quantity in each position. It is a flowchart which shows control of the intake condensed water process of this invention.

  Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an overall view showing a configuration of an engine E provided with an intake condensate treatment apparatus of the present invention.

  The engine E is an automobile diesel engine, and as shown in FIG. 1, an intake passage 1 leading to an intake port for sending an air-fuel mixture into a cylinder containing a piston, an exhaust passage 2 drawn from the exhaust port, a fuel injection device, and the like It has. The intake port and the exhaust port are opened and closed by valves.

  The intake passage 1 includes a first throttle valve 5 that adjusts the flow passage area of the intake passage 1 toward the upstream side from the intake port, and an intake air cooling device 6 that cools the intake air flowing through the intake passage 1 (hereinafter referred to as “interfacing”). A cooler 6), a turbocharger compressor 17, a second throttle valve 15 for adjusting the flow passage area of the intake passage 1, an air cleaner case 18 containing an air cleaner, and the like. In the air cleaner case 18, a temperature sensor capable of detecting the intake air temperature in the pipe is provided as an atmospheric temperature detection device 19.

  In the exhaust passage 2, from the exhaust port toward the downstream side, a turbocharger turbine 7, an exhaust purification unit 8 including a catalyst for removing nitrogen oxide (NOx) and the like in the exhaust, and an exhaust pipe (muffler) 9 Is provided.

  A midway portion between the turbine 7 and the exhaust port of the exhaust passage 2 and a midway portion between the intake port of the intake passage 1 and the first throttle valve 5 are communicated by a high pressure exhaust gas recirculation passage 3 constituting a high pressure exhaust gas recirculation device. doing. A part of the exhaust gas discharged from the engine E returns to the intake passage 1 as a high-pressure recirculation gas via the high-pressure exhaust recirculation passage 3. A high-pressure exhaust gas recirculation valve 4 is provided in the high-pressure exhaust gas recirculation passage 3. The high-pressure recirculation gas merges with the intake air in the intake passage 1 in accordance with the pressure state in the intake passage 1 associated with the opening and closing of the high-pressure exhaust gas recirculation valve 4 and the opening and closing of the first throttle valve 5.

  Further, the exhaust pipe 9 located on the downstream side of the exhaust purification unit 8 in the exhaust passage 2, and the middle portions of the compressor 17 and the second throttle valve 15 in the intake passage 1 are low pressures constituting a low pressure exhaust gas recirculation device. The exhaust gas recirculation passage 13 communicates. A part of the exhaust gas discharged from the engine E returns to the upstream side of the intercooler 6 in the intake passage as low-pressure recirculation gas via the low-pressure exhaust recirculation passage 13. The low pressure exhaust gas recirculation passage 13 is provided with a low pressure exhaust gas recirculation valve 14. Then, the low-pressure recirculation gas merges with the intake air in the intake passage 1 according to the pressure state in the intake passage 1 associated with the opening and closing of the low-pressure exhaust recirculation valve 14 and the opening and closing of the second throttle valve 15. Hereinafter, this low-pressure reflux gas is simply referred to as “reflux gas”.

  In the low-pressure exhaust gas recirculation passage 13 of the low-pressure exhaust gas recirculation device, a recirculation gas cooler 11 for cooling the recirculation gas is provided. As the reflux gas cooler 11, a water-cooled cooling device including a heat exchanger using cooling water as a refrigerant may be employed, or an air-cooling cooling device including an air-cooling heat exchanger may be employed. .

  On the downstream side of the intercooler 6 in the intake passage 1, a condensed water detection means 32 that detects the amount of condensed water in the intake passage 1 is provided. In this embodiment, an electric resistance type moisture meter that can detect the presence or absence of liquid water is employed as the condensed water detection means 32. As the condensed water detection means 32, a moisture meter other than the electric resistance type, a device capable of detecting the water level of liquid water, or the like may be employed.

  An atomizer 31 is arranged in the intercooler 6 or the intake passage 1 on the downstream side of the intercooler 6. In this embodiment, the atomizer 31 is provided between the intercooler 6 and the condensed water detection means 32. It is desirable that the atomizing device 31 is disposed at the lowest position of the intercooler 6 where the condensed water tends to accumulate or the intake pipe on the downstream side of the intercooler 6.

  The atomizing device 31 is a high-frequency vibration device using a piezoelectric vibrator. By operating the high-frequency vibration device, the staying water can be atomized and suspended in the air. As the atomizing device, for example, an electrostatic atomizing device or an injector may be used in addition to the high-frequency vibration device.

  The drive power of the atomizer 31 may use deceleration regenerative power. Depending on the state of charge of the battery, the power consumption destination can be switched between the battery and the deceleration regenerative power.

  The operation of the atomizing device 31 is controlled by the atomizing device control means 30. The atomizing device control means 30 operates in cooperation with an electronic control unit (Electronic Control Unit) 20 provided in a vehicle on which the engine E is mounted. The electronic control unit 20 itself may have the function of the atomizer control means 30.

  The atomizing device control means 30 operates the atomizing device 31 when the amount of condensate water estimated by the condensed water detecting means 32 exceeds a predetermined amount, and operates the atomizing device 31 when the amount is less than the predetermined amount. Stop. In this embodiment, by setting the predetermined amount to zero, if the condensed water stays even a little, the atomizer 31 is controlled to operate. That is, the operation and stop of the atomizer 31 are controlled based on the presence or absence of condensed water.

  The information on the condensate retention amount acquired by the condensate detection means 32 is sent to the condensate detection control means 22 included in the electronic control unit 20, and the atomizer is based on the information from the condensate detection control means 22. The control means 30 performs control.

  Further, the intake condensed water treatment apparatus includes a moisture amount estimation means 21 in the electronic control unit 20. The moisture amount estimation means 21 estimates the amount of moisture contained in the intake air passing through the intercooler 6 of the intake passage 1 based on the rotation speed of the engine E, the load of the engine E, the amount of recirculated gas introduced, and the intake air temperature. It has the function to do.

  The atomizer control means 30 operates the atomizer 31 when the water content in the intake air estimated by the water content estimation means 21 exceeds the saturated water vapor amount at the wall surface temperature in the intake passage 1, and the saturated water vapor When the amount is less than the amount, the operation of the atomizer 31 is stopped.

  Information such as various operating conditions of the engine E and environmental conditions outside the vehicle is acquired by the electronic control unit 20 through cables. Based on the information from the electronic control unit 20, the atomizer control unit 30 performs control through the information of the moisture amount estimation unit 21.

  As the wall surface temperature in the intake passage 1, the wall surface temperature of the intercooler 6 is adopted. In this embodiment, an air temperature detection device 19 for detecting the air temperature is provided in the air cleaner case 18, and the wall surface temperature of the intercooler 6 is estimated based on the air temperature. Since the wall temperature of the intercooler 6 is substantially equal to the atmospheric temperature, the wall temperature of the intercooler 6 is set to be estimated to be equal to the atmospheric temperature, and the atomizer control means 30 performs control based on the setting. ing.

  Here, the relationship between the wall surface temperature of the intercooler 6 and the atmospheric temperature is calculated in advance based on the measurement data and the like, and the wall surface temperature of the intercooler 6 is estimated based on the actually detected atmospheric temperature information. It may be a technique. Further, an intercooler passage gas temperature detection device that detects the temperature of the gas passing through the intercooler 6 may be provided, and the gas temperature may be acquired by the intercooler passage gas temperature detection device.

  This intake condensate treatment apparatus includes a condensed water integrating means 23 in the electronic control unit 20. The condensed water integrating means 23 has a function of integrating the intake water amount estimated by the water amount estimating means 21 in accordance with the intake air amount passing through the intake passage 1.

  The atomization device control means 30 is configured so that the accumulated generation amount calculated by the condensed water accumulation means 23 is atomized even when the moisture amount in the intake air estimated by the moisture amount estimation means 21 is equal to or less than the saturated water vapor amount. The operation of the atomizing device 31 is continued until the amount of atomization or less atomized by the device 31 is reached. That is, the operation of the atomizing device 31 is continued until the accumulated generation amount = atomization amount or the accumulated generation amount <the atomization amount.

  Hereinafter, the control method by the atomizer control means 30 will be described based on the flowchart shown in FIG. 3 and a specific calculation formula.

  In step S <b> 1 of FIG. 3, it is determined whether the amount of condensate retention estimated by the condensate detection means 32 is greater than or equal to a predetermined amount. Here, since the predetermined amount is set to zero, it is determined whether or not the condensed water is retained. In step S2, environmental conditions and operating conditions necessary for control are detected.

  Next, in step S <b> 3, the moisture content estimation means 21 estimates the moisture content contained in the intake air passing through the intercooler 6.

  The moisture content of the intake air estimated by the moisture content estimation means 21 is estimated by the sum of the moisture content contained in the intake air introduced from the outside via the air cleaner case 18 and the moisture content contained in the reflux gas.

  Here, information from an intake air amount detection device (air flow sensor), an outside air relative humidity detection device, an atmospheric temperature detection device 19, an intercooler passage gas temperature detection device provided in the intake passage 1, and a reflux obtained from the electronic control unit 20. A gas rate set value, input fuel amount, and saturated water vapor amount characteristic map are used.

As described above, the moisture content of the intake air estimated by the moisture content estimation means 21, that is, the moisture content M _{(H 2 O_intake)} passing through the intercooler 6 is the intake air introduced from the outside via the air cleaner case 18. _Is the sum of the water content M _{(H2O_outside air)} contained in the water and the water content M _{(H2O_reflux gas) contained in the reflux gas} ,
M _{(H2O_intake)} = M _{(H2O_outside air)} + M _{(H2O_reflux gas)} (1)
It is. Here, each water content M means the mass of water (hereinafter the same).

The amount of moisture M _{(H2O_reflux gas) contained in the reflux gas} is estimated by multiplying the moisture mass ratio R _{(H2O_exhaust)} in the exhaust from the combustion chamber by the mass M _{(reflux gas)} of the introduced reflux gas. ,
M _{(H2O_reflux gas)} = R _{(H2O_exhaust gas)} × M _{(reflux gas)} (2)
It is. However, 0 ≦ R _(H 2 _{O_exhaust)} ≦ 1.

The moisture mass ratio R _(H 2 _{O_exhaust)} in the exhaust from the combustion chamber is the ratio of the moisture mass M _{(H 2 O_exhaust) in} the _exhaust from the combustion chamber to the exhaust gas mass M _(exhaust) from the combustion chamber. Estimated
R _{(H2O_exhaust)}
= M _{(H2O_exhaust)} / M _(exhaust)
= {M _{(H2O_outside air)} + M _{(H2O_reflux gas)} + M _{(H2O_fuel)} } / M _(exhaust) (3)
It is.

That is, the moisture mass M _{(H 2 O_exhaust) in} the exhaust gas from the combustion chamber includes the moisture amount M _{(H 2 O_outside air)} contained in the intake air from the _outside, and the moisture amount M _{(H 2 O_reflux gas) contained in the reflux gas.} The amount of water generated by the combustion of the fuel, that is, the sum of the amount of water generated by combustion M _{(H 2 O_fuel)} is estimated. Here, the mass M _(exhaust) of the exhaust from the combustion chamber, the mass M _{(outside air)} of the intake air from the _outside , and the mass M _(fuel) of the _fuel are:
M _(exhaust) = M _{(outside air)} + M _(fuel) + M _{(reflux gas)}
It is.

From the formulas (2) and (3), M _{(H 2 O_reflux gas)} is
M _{(H2O_reflux gas)}
= R _{(H2O_exhaust)} x M _{(reflux gas)}
= {M _{(H2O_exhaust)} / M _(exhaust) } x M _{(reflux gas)}
= [{M _{(H2O_outside air)} + M _{(H2O_reflux gas)} + M _{(H2O_fuel)} }
/ M _(exhaust) ] × M _{(reflux gas)}
Solving this,
M _{(H2O_reflux gas)}
= [{M _{(H2O_outside air)} + M _{(H2O_fuel)} }
/ {M _(exhaust) -M _{(reflux gas)} }] × M _{(reflux gas)}
= [{M _{(H2O_outside air)} + M _{(H2O_fuel)} }
/ {(M _{(outside air)} + M _(fuel) + M _{(reflux gas)} ) -M _{(reflux gas)} }] × M _{(reflux gas)}
Therefore,
M _{(H2O_reflux gas)}
= [{M _{(H2O_outside air)} + M _{(H2O_fuel)} }
/ {M _{(outside air)} + M _(fuel) }] × M _{(reflux gas)} (4)
It is.

The amount of moisture M _{(H2O_outside air)} contained in the intake air from the _outside is equal to the saturated water vapor amount M _{(saturated_outside air)} of the outside air, and the relative humidity RH (%) (0 ≦ RH ≦) acquired by the outside air relative humidity detector. 100) and the mass M _{(outside air)} of the intake air from the _outside ,
M _{(H2O_outside air)} = M _{(saturated_outside air)} × RH / 100 × M _{(outside air)} (5)
It is.

  Here, if it is simply estimated, it is also possible to estimate the amount of water passing through the intercooler 6 with the outside air relative humidity detection device omitted and with the outside air relative humidity set to a predetermined value (for example, 100%). Furthermore, if it is simply estimated, even when the outside air relative humidity is set to a predetermined value, the condensate generation operation region may be held as map information, and estimation may be performed based on the map information.

_Assuming that the carbon-hydrogen ratio of light oil (C ₁₆ H ₃₀ ), which is a fuel, is 1.875, the amount of combustion generated water M _{(H 2 O_fuel)} is the mass of fuel consumed M _(fuel) per 1 mol of fuel. _Multiplying the ratio of the mass G _{(H 2 O)} (18 g / mol) per mole of water to the ratio of G 1 _(C16H30) (222 g / mol in this example) and the magnification of the number of _{moles of} water produced per mole of fuel. Is estimated.
M _{(H2O_fuel)} = 15 × {G _(H2O) / G _(C16H30) × M _(fuel)
.... (6)

Here, the magnification 15 is
C ₁₆ H ₃₀ + {16+ (15/2)} O ₂ → 16CO ₂ + 15H ₂ 0
Based on the _formula, it is determined by the coefficient ratio of _C 16 _{H 30} and _{H 2} 0.

  By substituting the equations (4), (5), and (6) into the equation (1), the amount of water that passes through the intercooler 6 can be estimated. Note that the gas passing through the intercooler 6 is assumed to be air, and the saturated water vapor amount at the temperature of the passing gas (that is, the wall surface temperature of the intercooler 6) is the saturated water vapor amount of the gas passing through the intercooler 6. . FIG. 2 shows to which part of the intake passage 1 and the exhaust passage 2 the numerical values based on the calculation of the water content correspond.

  The amount of moisture is estimated as described above, and it is determined in step S3 that either the estimated amount of condensed water in the intake passage 1 or the estimated amount of moisture satisfies the above-described conditions. If so, control is performed so as to activate the atomizing device 31 (see step S5). Further, when both the staying amount and the moisture amount do not satisfy the conditions, control for stopping the operation of the atomizing device 31 is performed (see step S4).

  As described above, by appropriately removing the condensed water staying in the intake system by the atomizer 31, it is possible to prevent a large amount of condensed water from staying in the intake passage 1. In addition, it is possible to prevent a situation in which a large amount of condensed water flows into the combustion chamber at one time and deteriorates combustion.

  According to the present invention, the moisture contained in the recirculated gas can be fed into the combustion chamber regardless of the operating conditions such as the environmental temperature and the intake air amount, so that the fed gas is a high pressure introduced downstream of the intercooler 6. It can be treated as equivalent to the reflux gas.

  In this embodiment, the configuration of the present invention has been described by taking a diesel engine as an example, but the configuration of the present invention can also be adopted in a gasoline engine.

  In this embodiment, the operation of the atomizing device 31 is continued until the accumulated amount calculated by the condensed water integrating means 23 is equal to or less than the atomized amount atomized by the atomizing device 31. When the amount is large and it takes a long time until the accumulated generation amount ≦ the atomization amount, exposure of the intercooler 6 to the atmosphere may be suppressed so that the wall surface temperature of the intercooler 6 is higher than the atmospheric temperature. .

DESCRIPTION OF SYMBOLS 1 Intake passage 2 Exhaust passage 3 High pressure exhaust recirculation passage 4 High pressure exhaust recirculation valve 5 First throttle valve 6 Intake air cooling device (intercooler)
7 Turbine 8 Exhaust gas purification unit 9 Exhaust pipe 11 Recirculation gas cooler 13 Low pressure exhaust gas recirculation passage 14 Low pressure exhaust gas recirculation valve 15 Second throttle valve 19 Atmospheric temperature detection device 20 Electronic control unit 21 Water content estimation means 22 Condensed water detection control means 23 Condensation Water integrating means 30 Atomizing device control means 31 Atomizing device 32 Condensed water detecting means

Claims (6)

An intake air cooling device disposed in the intake passage of the engine;
An exhaust gas recirculation passage for recirculating part of the exhaust gas from the exhaust passage of the engine to the intake air passage on the upstream side of the intake air cooling device;
Moisture amount estimation means for estimating the amount of moisture contained in the intake air passing through the intake passage;
An atomizer disposed in the intake air cooling device or the intake passage downstream thereof;
An atomizer control means for controlling the operation of the atomizer,
The atomizer control means operates the atomizer when the water amount estimated by the water amount estimation means exceeds the saturated water vapor amount at the temperature of the wall surface in the intake passage, and is equal to or less than the saturated water vapor amount. the operation of the atomization apparatus is stopped when,
Condensed water detection means for detecting the amount of condensed water staying in the intake passage,
The atomization apparatus control unit, the atomization device is operated, stops the operation of the atomization apparatus when the predetermined amount or less when the retention amount estimated by the condensed water detecting means exceeds a predetermined amount ,
Condensed water integrating means for integrating the moisture content of the intake air estimated by the water content estimating device according to the intake air amount passing through the intake passage,
The atomizing device control means is configured such that the accumulated amount calculated by the condensed water integrating means is atomized by the atomizing device even when the water content is equal to or less than the saturated water vapor amount. It follows until, you continue the operation of the atomization apparatus air condensate treatment apparatus. Equipped with an atmospheric temperature detection device that detects the atmospheric temperature,
The wall surface temperature in the intake passage, the intake condensed water treatment apparatus according to claim 1 which is estimated based on the ambient temperature. The intake air amount according to claim 1 or 2 , wherein the moisture amount of the intake air estimated by the moisture amount estimating means is estimated by a sum of a moisture amount contained in the intake air from the outside and a moisture amount contained in the reflux gas. Condensate treatment equipment. The intake water condensate treatment apparatus according to claim 3 , wherein the amount of water contained in the recirculated gas is estimated by multiplying a mass ratio of water in the exhaust gas from the combustion chamber by a mass of the recirculated gas introduced. The moisture mass ratio in the exhaust from the combustion chamber is estimated by the ratio of the moisture mass in the exhaust from the combustion chamber to the exhaust gas mass from the combustion chamber,
Water mass in the exhaust from the combustion chamber, the amount of water contained in the intake air from the outside, the amount of water contained in the recirculated gas, according to claim 4, which is estimated by the sum of the combustion product water content Intake condensate treatment device. The amount of moisture contained in the intake air from the outside is estimated by multiplying the saturated water vapor amount of the outside air by the relative humidity and the mass of the intake air from the outside,
The amount of water produced by combustion is estimated by multiplying the mass of fuel consumed by the ratio of the mass per mol of water to the mass per mol of fuel and the ratio of the number of mols of water generated per mol of fuel. The intake condensate treatment apparatus according to claim 5 .

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