WO2014192747A1 - Dispositif de commande moteur et procédé de commande - Google Patents

Dispositif de commande moteur et procédé de commande Download PDF

Info

Publication number
WO2014192747A1
WO2014192747A1 PCT/JP2014/063981 JP2014063981W WO2014192747A1 WO 2014192747 A1 WO2014192747 A1 WO 2014192747A1 JP 2014063981 W JP2014063981 W JP 2014063981W WO 2014192747 A1 WO2014192747 A1 WO 2014192747A1
Authority
WO
WIPO (PCT)
Prior art keywords
cooling water
temperature
engine
head
warm
Prior art date
Application number
PCT/JP2014/063981
Other languages
English (en)
Japanese (ja)
Inventor
尊雄 井上
Original Assignee
日産自動車株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日産自動車株式会社 filed Critical 日産自動車株式会社
Publication of WO2014192747A1 publication Critical patent/WO2014192747A1/fr

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • F01P7/167—Controlling of coolant flow the coolant being liquid by thermostatic control by adjusting the pre-set temperature according to engine parameters, e.g. engine load, engine speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2025/00—Measuring
    • F01P2025/08—Temperature
    • F01P2025/46—Engine parts temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2037/00—Controlling
    • F01P2037/02—Controlling starting

Definitions

  • the present invention relates to a control device and control method of an engine mounted on a vehicle.
  • JP2011-179435A the bore wall surface temperature is estimated based on the engine coolant temperature, the fuel injection amount, the exhaust temperature, and the exhaust flow rate, the warm-up state is determined, and afterglow is performed until the wall surface temperature reaches a predetermined temperature.
  • a combustion control system for an internal combustion engine is disclosed.
  • the engine is started under various conditions such as starting from a completely cold state, stopping after starting from a cold state, and immediately restarting.
  • temperature conditions of the engine differ depending on different extrinsic conditions such as cold places and hot places. Due to these factors, the warm-up state of the engine is different.
  • a heat management system that actively controls the exchange of heat at each part using cooling water is configured.
  • the cooling water flow path is disposed not only in the engine and the transmission but also in the intake and exhaust pipes and the like so as to perform the warm-up and the cooling.
  • the warm-up state differs in the engine and the surrounding area.
  • the cooling water temperature is different for each part. Therefore, it is difficult to accurately grasp the warm-up state of the engine only by detecting the cooling water temperature as in the prior art.
  • the present invention is made in view of such a problem, and an object of the present invention is to provide a control device of an engine which warms up the engine by grasping the warm-up state of the engine.
  • a control device for an engine that warms up the engine by a warm-up mode for setting the circulation state of the cooling water flowing through the engine, the head side circulating the cooling water through the cylinder head of the engine
  • the present invention is applicable to a cooling water flow control valve and a cooling water control valve that controls the flow of cooling water in a block-side cooling water flow path that distributes the cooling water to a cooling water flow path and a cylinder block of an engine.
  • the cooling water control valve controls a flow rate of the cooling water of at least one of the head side cooling water flow passage and the block side cooling water flow passage to warm up at least one of the etching head and the cylinder block. Is configured to be controllable.
  • the control device of the engine selects one warm-up mode from a plurality of warm-up modes based on the combustion chamber wall temperature in the cylinder head and the block bore wall temperature in the cylinder block, and based on the selected warm-up mode
  • the amount of flow of the cooling water of at least one of the head side cooling water flow passage and the block side cooling water flow passage is controlled by the cooling water control valve.
  • FIG. 1 is an explanatory view showing a configuration of an engine control system centering on an engine according to an embodiment of the present invention.
  • Drawing 2 is an explanatory view showing the flow of the cooling water by the control position of the 1st cooling water control valve of the embodiment of the present invention.
  • Drawing 3 is an explanatory view showing the flow of the cooling water by the control position of the 1st cooling water control valve of the embodiment of the present invention.
  • Drawing 4 is an explanatory view showing the flow of the cooling water by the control position of the 1st cooling water control valve of the embodiment of the present invention.
  • Drawing 5 is an explanatory view showing the flow of the cooling water by the control position of the 1st cooling water control valve of the embodiment of the present invention.
  • FIG. 6 is an explanatory view showing the flow of the cooling water according to the control position of the second cooling water control valve of the embodiment of the present invention.
  • FIG. 7 is an explanatory view showing the flow of the cooling water at the control position of the second cooling water control valve according to the embodiment of the present invention.
  • FIG. 8 is an explanatory view showing the flow of cooling water according to the control position of the second cooling water control valve of the embodiment of the present invention.
  • FIG. 9 is a flowchart of engine warm-up control executed by the ECU according to the embodiment of the present invention.
  • FIG. 10 is an explanatory view showing the correlation between the oil temperature and the block bore wall temperature according to the embodiment of this invention.
  • FIG. 11 is an explanatory view showing the correlation between the head combustion chamber temperature, the block bore wall temperature, and the friction (frictional resistance) of the engine according to the embodiment of this invention.
  • FIG. 1 is an explanatory diagram of an engine control system 1 centering on an engine 10 according to the embodiment of this invention.
  • the engine control system 1 includes an engine 10, a transmission 20, a coolant circuit 30, and an engine control unit (ECU) 60 that controls them.
  • ECU engine control unit
  • the engine 10 is composed of a cylinder head 11 and a cylinder block 12.
  • the cylinder head 11 is provided with a head side cooling water flow passage 37
  • the cylinder block 12 is provided with a block side cooling water flow passage 38, through which the cooling water flows.
  • the cylinder block 12 is provided with an oil cooler (O / C) 15.
  • the O / C 15 cools the hydraulic oil in the cylinder block 12 by circulating the cooling water, and maintains the hydraulic oil at a temperature suitable for the operation of the engine 10.
  • a transmission 20 is connected to the engine 10.
  • the transmission 20 is provided with a transmission oil warmer (O / W) 21.
  • the O / W 21 warms up the hydraulic fluid in the transmission 20 by circulating the coolant, and maintains the hydraulic fluid at a temperature suitable for the operation of the transmission 20.
  • the cooling water circuit 30 is provided with a water pump 36 and circulates the cooling water in the cooling water circuit 30.
  • the cooling water flow path 30 is configured such that the cooling water discharged from the engine 10 is returned to the water pump 36 again via the throttle valve 31, the EGR valve 33, the heater 35, the EGR cooler 32, the radiator 40 and the like.
  • the EGR cooler 32 cools the exhaust gas to be recirculated from the exhaust to the intake with cooling water.
  • the heater 35 is used not only for heating the passenger compartment but also as a heat source for electronic devices.
  • the radiator 40 is provided at the front end of the vehicle and reduces the temperature of the coolant by exchanging heat between the atmosphere and the coolant.
  • a first coolant control valve 51 is provided at the outlet of the head-side coolant channel 37.
  • the first cooling water control valve 51 is a 1-input 3-output switching valve that distributes the cooling water from the head-side cooling water flow path 37 to at least one of the heater 35, the radiator 40 and the second cooling water control valve 52. is there.
  • a second coolant control valve 52 is provided at the outlet of the block side coolant flow path 38.
  • the second cooling water control valve 52 switches the 1-input and 2-output mode of circulating the cooling water from the block-side cooling water flow path 38 to at least one of the O / C 15, the O / W 21 and the first cooling water control valve 51. It is a valve.
  • Part of the cooling water in the head-side cooling water flow path 37 flows to the EGR cooler 32 through a cooling water flow path formed in the throttle valve 31 and a cooling water flow path formed in the EGR valve 33.
  • the coolant that has passed through the EGR cooler 32 returns to the water pump 36.
  • a head inlet cooling water temperature sensor 101 for detecting the temperature of the cooling water flowing into the cylinder head 11 is provided in the vicinity of the inlet of the head side cooling water flow passage 37 of the cylinder head 11.
  • a head outlet cooling water temperature sensor 102 for detecting the temperature of the cooling water flowing out of the cylinder head 11 is provided near the outlet of the head side cooling water flow passage 37 of the cylinder head 11.
  • the cylinder block 12 is provided with an engine oil temperature sensor 103 that detects the temperature of hydraulic fluid of the engine 10.
  • the ECU 60 controls the first cooling water control valve 51 and the second cooling water control valve 52 based on the temperatures detected by the head inlet cooling water temperature sensor 101, the head outlet cooling water temperature sensor 102, and the engine oil temperature sensor 103. Control position and flow.
  • FIG. 2 to 6 are explanatory views showing the flow of the cooling water at the control position of the first cooling water control valve 51.
  • FIG. 2 shows the flow of the cooling water when the first cooling water control valve 51 is in the first control position.
  • the first coolant control valve 51 controls the flow rate of the coolant in the head-side coolant channel 37.
  • the coolant is controlled so as not to flow out of the first coolant control valve 51.
  • the cooling water flowing out of the water pump 36 returns from the head side cooling water flow path 37 to the water pump 36 again through the throttle valve 31, the EGR valve 33 and the EGR cooler 32.
  • the coolant circulates only the cylinder head 11 without passing through the radiator 40, so the warm-up of the cylinder head 11 is promoted. Be done.
  • the coolant in the cylinder block 12 is set by the control position of the second coolant control valve 52.
  • FIG. 3 shows the flow of cooling water when the first cooling water control valve 51 is in the second control position.
  • the first cooling water control valve 51 When the first cooling water control valve 51 is in the second control position, the first cooling water control valve 51 switches the cooling water from the head side cooling water flow passage 37 to flow out to the heater 35. In this case, the cooling water flowing out of the water pump 36 flows to the head side cooling water flow path 37, and a part of the cooling water passes through the throttle valve 31, the EGR valve 33, and the EGR cooler 32 to the water pump 36 again. Return. Another part of the cooling water returns from the EGR cooler 32 to the water pump 36 again from the first cooling water control valve 51 through the heater 35.
  • the coolant when the first coolant control valve 51 is in the second control position, the coolant does not pass through the radiator 40 but passes through the cylinder head 11 and the heater. At this time, when the cooling water passes through the heater 35, the temperature of the cooling water is lowered compared to the first control position. As a result, the warm-up of the cylinder head 11 is gradual compared to the first control position.
  • the flow rate of the cooling water flowing through the head-side cooling water channel 37 can be controlled by controlling the opening degree of the first cooling water control valve 51.
  • FIG. 4 shows the flow of the cooling water when the first cooling water control valve 51 is in the third control position.
  • the first cooling water control valve 51 When the first cooling water control valve 51 is in the third control position, the first cooling water control valve 51 switches the cooling water from the head side cooling water flow passage 37 to flow out to the radiator 40. In this case, the cooling water flowing out of the water pump 36 flows to the head side cooling water flow path 37, and a part of the cooling water passes through the throttle valve 31, the EGR valve 33, and the EGR cooler 32 to the water pump 36 again. Return. Another part of the cooling water returns from the first cooling water control valve 51 to the water pump 36 again via the radiator 40.
  • the cooling water control valve 51 when the first cooling water control valve 51 is in the third control position, the cooling water passes through the radiator 40, so that heat is exchanged with air in the radiator 40, and the temperature of the cooling water decreases. For this reason, the temperature of the cylinder head 11 is cooled by the cooling water.
  • the flow rate of the cooling water flowing through the head-side cooling water channel 37 can be controlled by controlling the opening degree of the first cooling water control valve 51.
  • FIG. 5 shows the flow of the cooling water when the first cooling water control valve 51 is in the fourth control position.
  • the first cooling water control valve 51 When the first cooling water control valve 51 is in the fourth control position, the first cooling water control valve 51 switches the cooling water from the head-side cooling water passage 37 to flow out to the heater 35 and the radiator 40 . In this case, the cooling water flowing out of the water pump 36 flows to the head side cooling water flow path 37, and a part of the cooling water passes through the throttle valve 31, the EGR valve 33, and the EGR cooler 32 to the water pump 36 again. Return. Another part of the cooling water returns from the first cooling water control valve 51 through the heater 35 and the EGR cooler 32 or through the radiator 40 to the water pump 36 again.
  • the cooling water passes through the heater 35 and the radiator 40, so that the third control position for circulating the cooling water only to the radiator 40 Further, the temperature of the cooling water is lowered as compared with. Therefore, the temperature of the cylinder head 11 is further cooled by the cooling water.
  • the flow rate of the cooling water flowing through the head-side cooling water channel 37 can be controlled by controlling the opening degree of the first cooling water control valve 51.
  • FIG. 6 to 8 are explanatory diagrams showing the flow of the cooling water at the control position of the second cooling water control valve 52.
  • FIG. 6 to 8 are explanatory diagrams showing the flow of the cooling water at the control position of the second cooling water control valve 52.
  • FIG. 6 shows the flow of the coolant when the second coolant control valve 52 is in the first control position.
  • the second cooling water control valve 52 controls the flow rate of the cooling water in the block side cooling water flow passage 38.
  • the second cooling water control valve 52 When the second cooling water control valve 52 is in the first control position, the second cooling water control valve 52 controls the cooling water not to flow in the block-side cooling water flow path 38. In this case, the coolant does not flow through the cylinder block 12. With such a configuration, when the second coolant control valve 52 is in the first control position, the coolant does not flow through the cylinder block 12, so the warm-up of the cylinder block 12 is promoted.
  • the coolant for the cylinder head 11 is set to one of the above-described FIGS. 2 to 5 depending on the control position of the first coolant control valve 51.
  • FIG. 7 shows the flow of the cooling water when the second cooling water control valve 52 is in the second control position.
  • the second cooling water control valve 52 When the second cooling water control valve 52 is in the second control position, the second cooling water control valve 52 cools the block-side cooling water passage 38 to the O / C 15 of the engine 10 and the O / W 21 of the transmission 20. Control the flow of water. In this case, the cooling water flowing out of the water pump 36 flows to the block side cooling water flow path 38, and a portion of the cooling water flows to the O / C 15 of the engine 10 and returns to the water pump 36 again. Another part of the cooling water flows to the O / W 21 of the transmission 20 and returns to the water pump 36 again.
  • the cooling water control valve 52 when the second cooling water control valve 52 is in the second control position, the cooling water flows through the block-side cooling water flow path 38, so the cylinder block 12 is cooled by the temperature of the cooling water. At this time, by controlling the opening degree of the second cooling water control valve 52, the flow rate of the cooling water passing through the second cooling water control valve 52, that is, the flow rate of the cooling water flowing through the cylinder block 12 is controlled. And the temperature of the cylinder block 12 can be controlled.
  • FIG. 8 shows the flow of the cooling water when the second cooling water control valve 52 is in the third control position.
  • the second cooling water control valve 52 When the second cooling water control valve 52 is in the third control position, the second cooling water control valve 52 cools from the block side cooling water passage 38 to the O / C 15 of the engine 10 and the O / W 21 of the transmission 20. Control the flow of water. Further, the second cooling water control valve 52 is controlled to flow from the block side cooling water flow path 38 to the first cooling water control valve 51. At this time, the first cooling water control valve 51 is in the fourth control position, and the cooling water is controlled to flow through the radiator 40.
  • Such control causes part of the cooling water to return from the engine 10 and the transmission 20 to the water pump 36 again. Another part of the cooling water returns to the water pump 36 again via the radiator 40 via the first cooling water control valve 51.
  • the cooling water is controlled to pass through the radiator 40 after flowing through the block side cooling water flow path 38, so the temperature of the cooling water The cylinder block 12 is cooled.
  • the opening degree of the second cooling water control valve 52 the flow rate of the cooling water passing through the second cooling water control valve 52, that is, the flow rate of the cooling water flowing from the cylinder block 12 to the radiator 40.
  • the temperature of the cylinder block 12 can be controlled.
  • FIG. 9 is a flowchart of engine warm-up control executed by the ECU 60 according to the embodiment of this invention.
  • the flowchart shown in FIG. 9 is executed by the ECU 60 in parallel with other processing in a predetermined cycle (for example, 10 ms).
  • step S1 the ECU 60 acquires the head inlet coolant temperature TwHi from the head inlet coolant temperature sensor 101, the head outlet coolant temperature TwHo from the head outlet coolant temperature sensor 102, and the oil temperature To from the engine oil temperature sensor 103.
  • the ECU 60 determines whether the head outlet coolant temperature TwHo is less than the predetermined temperature L1 and the oil temperature To is less than the predetermined temperature L1. If it is determined that the head outlet water temperature TwHo and the oil temperature To are both less than L1, then the process proceeds to step S3. If it is determined that at least one is greater than or equal to L1, the process proceeds to step S4.
  • the predetermined temperature L1 is a temperature that can determine whether both the coolant temperature and the oil temperature are in the cold state, and is set to 35 ° C., for example.
  • step S3 the ECU 60 sets the first coolant control valve 51 to the first control position and sets the second coolant control valve 52 to the first control position. Do.
  • step S3 the process of this flowchart is once ended, and the process returns to another process.
  • step S2 When it is determined in step S2 that at least one of the head outlet water temperature TwHo and the oil temperature To is equal to or higher than the predetermined temperature L1, the process proceeds to step S4.
  • step S4 it is determined whether the head outlet coolant temperature TwHo is less than the predetermined temperature H1 or the oil temperature To is less than the predetermined temperature H1. If it is determined that at least one of the head outlet water temperature TwHo and the oil temperature To is less than the predetermined temperature H1, the process proceeds to step S5. If it is determined that the head outlet water temperature TwHo and the oil temperature To are both equal to or higher than the predetermined temperature H1, the process proceeds to step S17.
  • the predetermined temperature H1 is a temperature at which the temperature of the cooling water temperature and the oil temperature can be sufficiently raised to determine that the warm-up is completed, and is set to, for example, 80 ° C. If YES is selected in step S4, it is determined that the warm-up has not been completed yet, and warm-up of the engine 10 is performed in the warm-up mode in any of steps S11, S14 or S16 described below.
  • step S5 the ECU 60 determines whether the warm-up mode has not been selected. If the warm-up mode in any one of steps S11, S14 or S16 is selected and the flag is satisfied in step S12, it is determined that the warm-up mode has been selected, and the process proceeds to step S8.
  • step S6 the ECU 60 sets the warm-up mode (warm-up mode 0) in the initial state. Specifically, the ECU 60 sets the first coolant control valve 51 to the second control position, and sets the valve opening degree so that the flow rate in the first coolant control valve 51 is low. Further, the second coolant control valve 52 is set to the first control position.
  • the cooling water circulates from the cylinder head 11 to the water pump 36 via the heater 35, while the cooling water does not circulate in the cylinder block 12, so the warm air of the engine 10 Is promoted.
  • the ECU 60 determines whether a predetermined time has elapsed since the warm-up mode 0 was set in step S6. If the predetermined time has not yet elapsed, the process of this flowchart is once ended, and the process returns to another process. If it is determined that the predetermined time has elapsed, the process proceeds to step S8.
  • the predetermined time in step S7 is set to a time from when the engine 10 is started and circulation of cooling water is started by the water pump 36 to when water flow is generated inside the cylinder head 11 or the cylinder block 12. That is, it waits for a predetermined time until the correlation between the temperature of the cylinder head 11 and the head inlet temperature TwHi and the head outlet temperature TwHo becomes clear by the water flow.
  • step S5 If it is determined in step S5 that the warm-up mode has already been set, or if it is determined in step S7 that the predetermined time has elapsed, the process proceeds to step S8.
  • step S8 the ECU 60 estimates the head combustion chamber wall temperature TH in the cylinder head 11 based on the head inlet temperature TwHi and the head outlet temperature TwHo.
  • the head combustion chamber wall temperature TH is calculated, for example, according to the following equation (1).
  • the head combustion chamber temperature TH can be estimated based on the temperature of the cooling water circulating through the head.
  • step S9 the ECU 60 estimates a block bore wall temperature TB in the cylinder block 12 based on the oil temperature To.
  • the oil temperature To and the block bore wall temperature TB have a correlation as shown in FIG.
  • the ECU 60 can estimate the block bore wall temperature TB based on the oil temperature To by holding the correlation in advance using a map or the like.
  • the block bore wall temperature TB can also be estimated from the integrated value of the input fuel amount. That is, the temperature of the block bore wall rises due to the heat generated by the combustion of the injected fuel after the start of the start of the engine 10. Therefore, the block bore wall temperature TB can be estimated based on the integrated value of the fuel supplied from the start of the engine 10 and the coefficient determined from the bore shape and the like.
  • processing for determining the warm-up mode is performed based on the estimated head combustion chamber temperature TH and block bore wall temperature TB.
  • step S10 the ECU 60 determines whether the head combustion chamber temperature TH is less than the predetermined temperature H2 and the block bore wall temperature TB is less than the predetermined temperature H3.
  • the process proceeds to step S11.
  • the head combustion chamber temperature TH is equal to or higher than the predetermined temperature H2 or the block bore wall temperature TB is equal to or higher than the predetermined temperature H3, the process proceeds to step S13.
  • the predetermined temperature H2 is a temperature at which the temperature of the cylinder head 11 rises and it can be determined that the warm-up in the cylinder head 11 is completed, and is set to 100 ° C., for example.
  • the predetermined temperature H3 is a temperature at which it can be determined that the temperature of the cylinder block 12 has risen and the warm-up in the cylinder block 12 has been completed, and is set to 120 ° C., for example.
  • step S11 the ECU 60 sets the warm-up mode 1. Specifically, the ECU 60 sets the first coolant control valve 51 to the first control position, and sets the second coolant control valve 52 to the first control position.
  • the coolant does not pass through the radiator 40, and the coolant circulates between the cylinder head 11 and the water pump 36, thereby promoting the warm-up of the cylinder head 11. Since cooling water does not circulate in the cylinder block 12, warm-up of the cylinder block 12 is promoted.
  • FIG. 11 is an explanatory view showing the correlation between the head combustion chamber temperature TH, the block bore wall temperature TB, and the friction (frictional resistance) of the engine 10 according to the embodiment of the present invention.
  • the block bore wall temperature TB greatly affects the increase in friction of the engine 10.
  • step S10 When determination of step S10 is NO, it transfers to step S13.
  • step S13 the ECU 60 determines whether the head combustion chamber temperature TH is equal to or higher than the predetermined temperature H2 and the block bore wall temperature TB is lower than the predetermined temperature H3. When the head combustion chamber temperature TH is equal to or higher than the predetermined temperature H2 and the block bore wall temperature TB is lower than the predetermined temperature H3, the process proceeds to step S14. When the head combustion chamber temperature TH is less than the predetermined temperature H2 or the block bore wall temperature TB is the predetermined temperature H3 or more, the process proceeds to step S15.
  • step S13 If it is determined in step S13 that the head combustion chamber temperature TH is equal to or higher than the predetermined temperature H2 and the block bore wall temperature TB is lower than the predetermined temperature H3, the warm-up of the cylinder head 11 is completed. It is determined that the cylinder block 12 has not been warmed up yet. Therefore, in step S14, the ECU 60 sets the warm-up mode 2. Specifically, the ECU 60 sets the first coolant control valve 51 to the second control position, and sets the second coolant control valve 52 to the first control position.
  • the cooling water circulates between the cylinder head 11 and the water pump 36 via the heater 35, so that the temperature of the cylinder head 11 is maintained. Water circulates. On the other hand, since the cooling water does not circulate in the cylinder block 12, the warm-up of the cylinder block 12 is promoted.
  • step S13 the ECU 60 determines whether the head combustion chamber temperature TH is less than the predetermined temperature H2 and the block bore wall temperature TB is the predetermined temperature H3 or more. When the head combustion chamber temperature TH is less than the predetermined temperature H2 and the block bore wall temperature TB is the predetermined temperature H3 or more, the process proceeds to step S16. When the head combustion chamber temperature TH is equal to or higher than the predetermined temperature H2 or the block bore wall temperature TB is lower than the predetermined temperature H3, the process proceeds to step S17.
  • step S15 If it is determined in step S15 that the head combustion chamber temperature TH is less than the predetermined temperature H2 and the block bore wall temperature TB is the predetermined temperature H3 or more, the cylinder head 11 has not completed warm-up yet The cylinder block 12 is determined to be in a state where the warm-up is completed. Therefore, in step S16, the ECU 60 sets the warm-up mode 3. Specifically, the ECU 60 sets the first coolant control valve 51 to the first control position, and sets the second coolant control valve 52 to the second control position.
  • the coolant is circulated between the cylinder head 11 and the water pump 36, so the warm-up of the cylinder head 11 is promoted. Since the coolant is circulated in the cylinder block 12, the coolant is circulated to maintain the temperature of the cylinder block 12.
  • step S12 the ECU 60 sets a flag indicating that the selection of the warm-up mode has been completed, and temporarily terminates the processing of this flowchart. Return.
  • step S4 If it is determined in step S4 that both the head outlet water temperature TwHo and the oil temperature To are equal to or higher than the predetermined temperature H1, or if the determinations in step S10, step S13, and step S15 are all NO, step S17. Migrate to
  • step S17 it is determined that the warm-up of the engine 10 is completed. Therefore, the ECU 60 shifts from the warm-up mode to a mode in which normal cooling water circulates. For example, the ECU 60 sets the first coolant control valve 51 to the fourth control position, and sets the second coolant control valve 52 to the second control position. In this state, cooling water is circulated between the cylinder head 11 and the cylinder block 12 and the heater 35 and the radiator 40 to control the temperature of the engine 10 and its surrounding area to be properly maintained.
  • the ECU 60 selects any one of the plurality of warm-up modes based on the head combustion chamber temperature TH and the block bore chamber temperature TB, and selects the selected warm-up mode.
  • the control positions of the first coolant control valve 51 and the second coolant control valve 52 are controlled based on the machine mode.
  • one of the warm-up modes is selected based on the head combustion chamber temperature TH and the block bore chamber temperature TB.
  • appropriate warm-up control can be performed based on the temperature of each part of the engine 10 having different temperatures, so warm-up can be promoted, and warm-up is promoted. Fuel consumption performance of the engine 10 can be improved.
  • the warm-up mode 1 is selected so that the cylinder head 11 and the cylinder block 12 are warmed up.
  • the control positions of the first coolant control valve 51 and the second coolant control valve 52 are changed.
  • the ECU 60 selects the warm-up mode 2 and maintains the temperature of the cylinder head 11.
  • the control positions of the first coolant control valve 51 and the second coolant control valve 52 are changed so that only the cylinder block 12 is warmed up.
  • the ECU 60 selects the warm-up mode 3 and warms up only the cylinder head 11 The control positions of the first coolant control valve 51 and the second coolant control valve 52 are changed so as to maintain the temperature of the cylinder block 12.
  • the coolant temperature instead of detecting the coolant temperature and using it for warm-up control, it is estimated from the head combustion chamber wall temperature TH estimated from the head inlet coolant temperature TwHi and the head outlet coolant temperature TwHo, and the oil temperature To.
  • the warm-up mode is selected by the block bore wall temperature TB.
  • both the cylinder head 11 and the cylinder block 12 of the engine 10 are properly warmed up by selecting the warm-up mode based on the temperatures of different parts of the cylinder head 11 and the cylinder block 12 different from each other. can do. This can promote warm-up.
  • the head combustion chamber wall temperature TH is estimated from the head inlet water temperature TwHi and the head outlet water temperature TwHo, and the block bore wall temperature TB is estimated from the oil temperature To.
  • the head combustion chamber temperature TH can be estimated by circulating the cooling water.
  • the block bore wall temperature TB can be detected based on the oil temperature in the cylinder block 12 in which it is not desirable to circulate the cooling water during warm-up in order to prevent the friction increase of the engine 10.
  • the flow amount of the cooling water is reduced to estimate the head combustion chamber temperature TH.
  • the flow rate is reduced in a range that does not affect the warm-up of the cylinder head 11 and in a range where the temperature of the cylinder head 11 can be detected by the flow of cooling water, thereby warming the cylinder head 11 Can promote the machine.
  • the block bore wall temperature TB is estimated from the oil temperature To while the cooling water is not circulated.
  • the block bore wall temperature TB is estimated from the integrated value of the injected fuel in a state where the cooling water is not circulated.
  • the vehicle which is equipped with the engine 10 and is warmed up has been described as an example, but the present invention is not limited thereto.
  • the present invention can be similarly applied to warm-up when the engine 10 is driven again from the stopped state of the engine 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

Une vanne de commande d'eau de refroidissement est configurée de façon à pouvoir commander de multiples modes de préchauffage, et ce dispositif de commande choisit un des multiples modes de préchauffage, sur la base de la température de la paroi de la chambre de combustion dans la culasse et de la température de la paroi d'alésage de bloc dans le bloc-cylindres et, sur la base du mode de préchauffage choisi, commande, au moyen de la vanne de commande d'eau de refroidissement, la quantité d'écoulement d'eau de refroidissement dans le canal d'écoulement d'eau de refroidissement côté culasse et/ou dans le canal d'écoulement d'eau de refroidissement côté bloc.
PCT/JP2014/063981 2013-05-28 2014-05-27 Dispositif de commande moteur et procédé de commande WO2014192747A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013112284 2013-05-28
JP2013-112284 2013-05-28

Publications (1)

Publication Number Publication Date
WO2014192747A1 true WO2014192747A1 (fr) 2014-12-04

Family

ID=51988776

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2014/063981 WO2014192747A1 (fr) 2013-05-28 2014-05-27 Dispositif de commande moteur et procédé de commande

Country Status (1)

Country Link
WO (1) WO2014192747A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017056904A1 (fr) * 2015-09-30 2017-04-06 アイシン精機株式会社 Dispositif de régulation de refroidissement
JP2017223171A (ja) * 2016-06-16 2017-12-21 日立オートモティブシステムズ株式会社 車両用内燃機関の冷却装置及び冷却装置の制御方法
US20180245503A1 (en) * 2015-12-17 2018-08-30 Hitachi Automotive Systems, Ltd. Cooling device for internal combustion engine of vehicle and control method thereof
US20180266304A1 (en) * 2016-01-06 2018-09-20 Hitachi Automotive Systems, Ltd. Cooling device for internal combustion engine of vehicle and control method thereof
WO2018225305A1 (fr) * 2017-06-05 2018-12-13 三菱自動車工業株式会社 Système de refroidissement de moteur
CN109026335A (zh) * 2018-08-23 2018-12-18 浙江吉利控股集团有限公司 一种用于发动机的热管理控制方法及系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06212970A (ja) * 1992-12-25 1994-08-02 Mazda Motor Corp エンジンの冷却装置
JP2002030962A (ja) * 2000-07-14 2002-01-31 Nissan Motor Co Ltd ディーゼルエンジンの制御装置
JP2009293415A (ja) * 2008-06-03 2009-12-17 Nissan Motor Co Ltd 内燃機関の冷却回路
JP2010223050A (ja) * 2009-03-23 2010-10-07 Aisin Seiki Co Ltd エンジンの冷却装置
JP2011179435A (ja) * 2010-03-02 2011-09-15 Toyota Motor Corp 内燃機関の燃焼制御装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06212970A (ja) * 1992-12-25 1994-08-02 Mazda Motor Corp エンジンの冷却装置
JP2002030962A (ja) * 2000-07-14 2002-01-31 Nissan Motor Co Ltd ディーゼルエンジンの制御装置
JP2009293415A (ja) * 2008-06-03 2009-12-17 Nissan Motor Co Ltd 内燃機関の冷却回路
JP2010223050A (ja) * 2009-03-23 2010-10-07 Aisin Seiki Co Ltd エンジンの冷却装置
JP2011179435A (ja) * 2010-03-02 2011-09-15 Toyota Motor Corp 内燃機関の燃焼制御装置

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017056904A1 (fr) * 2015-09-30 2017-04-06 アイシン精機株式会社 Dispositif de régulation de refroidissement
US20180245503A1 (en) * 2015-12-17 2018-08-30 Hitachi Automotive Systems, Ltd. Cooling device for internal combustion engine of vehicle and control method thereof
US10371041B2 (en) * 2015-12-17 2019-08-06 Hitachi Automotive Systems, Ltd. Cooling device for internal combustion engine of vehicle and control method thereof
US20180266304A1 (en) * 2016-01-06 2018-09-20 Hitachi Automotive Systems, Ltd. Cooling device for internal combustion engine of vehicle and control method thereof
US10605150B2 (en) * 2016-01-06 2020-03-31 Hitachi Automotive Systems, Ltd. Cooling device for internal combustion engine of vehicle and control method thereof
US20180245504A1 (en) * 2016-06-16 2018-08-30 Hitachi Automotive Systems, Ltd. Cooling Device for Internal Combustion Engine of Vehicle and Control Method Thereof
CN108026824A (zh) * 2016-06-16 2018-05-11 日立汽车系统株式会社 车辆用内燃机的冷却装置以及冷却装置的控制方法
WO2017217462A1 (fr) * 2016-06-16 2017-12-21 日立オートモティブシステムズ株式会社 Dispositif de refroidissement pour moteur à combustion interne d'un vehicule et procédé de commande pour dispositif de refroidissement
JP2017223171A (ja) * 2016-06-16 2017-12-21 日立オートモティブシステムズ株式会社 車両用内燃機関の冷却装置及び冷却装置の制御方法
CN108026824B (zh) * 2016-06-16 2020-07-10 日立汽车系统株式会社 车辆用内燃机的冷却装置以及冷却装置的控制方法
US10865696B2 (en) 2016-06-16 2020-12-15 Hitachi Automotive Systems, Ltd. Cooling device for internal combustion engine of vehicle and control method thereof
WO2018225305A1 (fr) * 2017-06-05 2018-12-13 三菱自動車工業株式会社 Système de refroidissement de moteur
CN109026335A (zh) * 2018-08-23 2018-12-18 浙江吉利控股集团有限公司 一种用于发动机的热管理控制方法及系统

Similar Documents

Publication Publication Date Title
JP6266393B2 (ja) 内燃機関の冷却装置
WO2014192747A1 (fr) Dispositif de commande moteur et procédé de commande
US9470138B2 (en) Coolant circulation system for engine
JP6378055B2 (ja) 内燃機関の冷却制御装置
JP4962657B2 (ja) 内燃機関の制御装置
JP6265171B2 (ja) 車両の熱交換装置
US20130167784A1 (en) Method for operating a coolant circuit
JP6096492B2 (ja) エンジンの冷却装置
JP6090138B2 (ja) エンジンの冷却装置
JP6306529B2 (ja) 車両用内燃機関の冷却装置及び制御方法
JP2010031701A (ja) 車両用熱交換システムの制御装置
EP3428419B1 (fr) Appareil de commande de système d'échange de chaleur
JP2018145825A (ja) 車載内燃機関の冷却液循環システム
US8978599B2 (en) Cooling apparatus of internal combustion engine for vehicle
KR101550981B1 (ko) 가변분리냉각시스템 모드별 제어 방법
JP2016211461A (ja) 車両用冷却装置
JP2010151067A (ja) エンジンの冷却装置
JP7206757B2 (ja) 車両用の冷却システム、及びその制御方法
JP6246633B2 (ja) 車両用内燃機関の冷却装置
JPWO2010106615A1 (ja) エンジンの冷却装置
JP2009287455A (ja) 内燃機関の冷却装置
US10612452B2 (en) Control method of coolant control valve unit
JP6064603B2 (ja) 内燃機関の冷却システムと内燃機関の冷却方法
JP2016210298A (ja) 内燃機関の冷却装置
JP4994546B2 (ja) 液冷式内燃機関の冷却装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14805023

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14805023

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP