WO2011058648A1 - 内燃機関の潤滑システム - Google Patents
内燃機関の潤滑システム Download PDFInfo
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- WO2011058648A1 WO2011058648A1 PCT/JP2009/069379 JP2009069379W WO2011058648A1 WO 2011058648 A1 WO2011058648 A1 WO 2011058648A1 JP 2009069379 W JP2009069379 W JP 2009069379W WO 2011058648 A1 WO2011058648 A1 WO 2011058648A1
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- WIPO (PCT)
- Prior art keywords
- generator
- oil
- internal combustion
- combustion engine
- heating mechanism
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
- F01M5/001—Heating
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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
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/023—Temperature of lubricating oil or working fluid
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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
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/1006—Engine torque losses, e.g. friction or pumping losses or losses caused by external loads of accessories
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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
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/06—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving electric generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1807—Rotary generators
- H02K7/1815—Rotary generators structurally associated with reciprocating piston engines
Definitions
- the present invention relates to a lubrication system for an internal combustion engine, and more particularly to a system for warming lubricating oil using electric power generated by a generator.
- Patent Document 1 discloses a system including a heater (oil heater) for heating lubricating oil (oil) of an internal combustion engine and a heat exchanger (oil cooler) for cooling the lubricating oil.
- a heater oil heater
- a heat exchanger oil cooler
- Patent Documents 2 and 3 propose a technique for supplying surplus regenerative power that cannot be fully charged to a battery to a heater for a lubricating oil or a heater for an exhaust purification device in a system that performs regenerative power generation when the vehicle decelerates. Has been.
- the heater is operated when the vehicle is in a decelerating state less frequently, when the decelerating state is short, or when the battery charge is small. May be less frequent. In that case, there is a possibility that the time until the lubricating oil of the internal combustion engine rises to an appropriate temperature may become longer.
- the present invention has been made in view of the above-described circumstances, and an object of the present invention is to utilize a generator that generates power using the power generated by the internal combustion engine and energy generated when the generator performs a power generation operation.
- the present invention provides a technique capable of reducing friction while avoiding an increase in fuel consumption of an internal combustion engine in a lubrication system for an internal combustion engine including a heating mechanism that heats lubricating oil of the internal combustion engine.
- the present invention provides a generator that generates power using the power generated by the internal combustion engine, and lubricating oil for the internal combustion engine using energy generated when the generator generates power.
- a heating mechanism for heating and comparing the amount of decrease in the engine load when the heating mechanism heats the lubricating oil with the amount of increase in the engine load when the generator generates power for the purpose of operating the heating mechanism, When the decrease amount of the load exceeds the increase amount of the engine load, the power generation operation of the generator for the purpose of supplying energy to the heating mechanism is permitted.
- the internal combustion engine lubrication system of the present invention includes: A generator that generates power using the power generated by the internal combustion engine; A heating mechanism that heats the lubricating oil of the internal combustion engine using energy generated when the generator generates power; and First detection means for detecting the temperature of the lubricating oil before passing through the heating mechanism; First calculation means for calculating a reduction amount of the engine load due to the heating mechanism heating the lubricating oil using the detection value of the first detection means as a parameter; Second calculating means for calculating an increase amount of the engine load due to the generator generating power to supply energy to the heating mechanism; Control means for permitting the generator to perform a power generation operation to supply energy to the heating mechanism when the calculation result of the first calculation means exceeds the calculation result of the second calculation means; I was prepared to.
- Lubricating oils for internal combustion engines tend to increase in viscosity when the temperature is low. For this reason, when the temperature of the lubricating oil is low, the friction of the internal combustion engine increases. When the friction of the internal combustion engine is large, the engine load increases, resulting in deterioration of fuel consumption (increase in fuel consumption).
- the heating mechanism is operated when the temperature of the lubricating oil is low, the friction of the internal combustion engine decreases due to the temperature rise of the lubricating oil.
- the engine load decreases, and the fuel consumption of the internal combustion engine decreases.
- the heating mechanism is activated when a load is applied to the internal combustion engine (hereinafter referred to as “load state”), the engine load increases on the contrary due to an increase in the power generation amount of the generator, and the fuel consumption increases accordingly. There was a risk of doing so.
- the generator before the heating mechanism is operated, the generator operates to generate power in order to supply the energy to the heating mechanism and the reduction amount of the engine load due to the heating mechanism heating the lubricating oil. Compared with the increase amount of the engine load caused by doing this, when the decrease amount of the engine load exceeds the increase amount, the generator operation for supplying energy to the heating mechanism is permitted.
- thermal energy can be used as the energy generated when the generator generates power.
- the heating mechanism a heat exchange mechanism that transmits heat energy generated when the generator performs a power generation operation to the lubricating oil can be used. That is, as the heating mechanism, a mechanism for exchanging heat between the generator and the lubricating oil can be used.
- the generator when the calculation result of the first calculation means is lower than the calculation result of the second calculation means, the generator generates regenerative power generation under the condition that the generator can perform regenerative power generation, so that the heat energy is transferred from the generator to the heating mechanism. May be supplied. In this case, it is difficult to immediately raise the temperature of the lubricating oil, but it is possible to heat the lubricating oil while suppressing an increase in fuel consumption due to an increase in engine load.
- electric energy can be used as energy generated when the generator performs a power generation operation.
- the heating mechanism an electric heater that converts electric energy generated by the generator into heat energy and transmits it to the lubricating oil can be used.
- the heating mechanism includes a heat exchange mechanism that transmits thermal energy generated when the generator generates power to the lubricating oil, and an electric type that converts the electrical energy generated by the generator into thermal energy and transmits it to the lubricating oil.
- a mechanism including a heater can also be used.
- the electric heater may be operated using the electric energy of the battery when the calculation result of the first calculation means is lower than the calculation result of the second calculation means. Good.
- the lubricating oil can be heated while suppressing an increase in fuel consumption due to an increase in engine load.
- the generator is regeneratively generated and the energy generated by the generator is supplied to the heating mechanism under conditions that allow the generator to generate regenerative power. You may make it do.
- the specified amount is a lower limit value of the charged amount that is considered that the charged amount of the battery is not insufficient even when the electric heater is operated using the electric energy of the battery.
- the heating process of the lubricating oil by the heating mechanism ends when the temperature of the lubricating oil after passing through the heating mechanism exceeds a predetermined upper limit temperature. It only has to be done.
- the upper limit temperature here corresponds to the upper limit value of the temperature considered to require heating of the lubricating oil.
- the first calculation means may calculate the reduction amount of the fuel consumption instead of calculating the reduction amount of the engine load.
- the second calculation means calculates the increase amount of the fuel consumption instead of calculating the increase amount of the engine load.
- a generator that generates power using the power generated by the internal combustion engine, and a heating mechanism that heats the lubricating oil of the internal combustion engine using energy generated when the generator generates power.
- a heating mechanism that heats the lubricating oil of the internal combustion engine using energy generated when the generator generates power.
- FIG. 1 is a diagram showing a schematic configuration of a lubrication system for an internal combustion engine.
- the internal combustion engine lubrication system includes an oil storage tank 2 for storing oil as lubricating oil of the internal combustion engine 1.
- the oil storage tank 2 may be an oil pan attached to the lower part of the internal combustion engine 1 or may be a tank arranged separately from the internal combustion engine 1.
- Oil stored in the oil storage tank 2 is sucked up by the oil pump 3 and discharged toward the internal combustion engine 1.
- Oil discharged from the oil pump 3 is supplied to the internal combustion engine 1 via the oil filter 4, the oil cooler 5, and the oil heater 11 in order.
- the oil supplied to the internal combustion engine 1 returns to the oil storage tank 2 after passing through an oil passage (not shown).
- the oil pump 3 described above is connected to the output shaft (crankshaft) of the internal combustion engine 1 via a belt or gear, and is driven by the rotational energy of the crankshaft or the mechanical pump driven by the rotational energy of the crankshaft.
- This is an electric pump.
- the oil filter 4 described above is a filter that removes solid particles contained in oil.
- the aforementioned oil cooler 5 is a mechanism for cooling the oil.
- the oil cooler 5 of the present embodiment has a heat exchanger 50 that exchanges heat between the cooling water of the internal combustion engine 1 and the oil, and the amount of cooling water that flows into the heat exchanger 50.
- a flow rate adjusting valve 51 to be adjusted is an electric flow rate adjusting valve that is opened and closed by a step motor, a solenoid, or the like.
- the flow rate adjusting valve 51 may be a thermostat type valve that closes (shuts off) when the oil temperature is lower than a certain temperature and opens when the oil temperature is equal to or higher than the certain temperature.
- the oil cooler 5 includes an air-cooled heat exchanger, a bypass passage that bypasses the heat exchanger and flows oil, and a switching valve that flows oil to either the heat exchanger or the bypass passage.
- An oil cooler provided may be used.
- the switching valve may be an electric valve that is opened and closed by a step motor, a solenoid, or the like, or may be a thermostat valve that performs switching operation according to the temperature of oil.
- the oil heater 11 is a heater that heats oil.
- the oil heater 11 is an electric heater that heats oil by converting electric energy into heat energy.
- the oil heater 11 is an embodiment of the heating mechanism of the present invention.
- an alternator that is connected to the internal combustion engine 1 via an output shaft (crankshaft) (not shown) of the internal combustion engine 1 via a belt or the like and converts kinetic energy (rotational energy) transmitted from the output shaft into electrical energy. 6 is attached.
- the electric energy generated by the alternator 6 is supplied to the battery 12 or the oil heater 11.
- the internal combustion engine lubrication system configured as described above is provided with an ECU 7 for controlling the internal combustion engine 1 and the various devices described above.
- the ECU 7 is an electronic control unit that includes a CPU, ROM, RAM, backup RAM, and the like.
- the first oil temperature sensor 80 is a sensor that detects the temperature of the oil flowing into the oil heater 11 (first oil temperature Toil 1), and is disposed in the oil passage between the oil cooler 5 and the alternator 6.
- the second oil temperature sensor 81 is a sensor that detects the temperature of the oil that has flowed out of the oil heater 11 (second oil temperature Toil2), and is disposed downstream of the oil heater 11 in the oil flow direction.
- the oil pressure sensor 9 is a sensor that detects the pressure of oil flowing into the internal combustion engine 1 (oil pressure Poil).
- the accelerator position sensor 10 is a sensor that outputs an electrical signal corresponding to an operation amount (accelerator opening) of an accelerator pedal (not shown).
- the ECU 7 electrically controls the oil cooler 5, the alternator 6, and the oil heater 11 based on the output signals of the various sensors described above. For example, the ECU 7 controls the oil cooler 5, the alternator 6, and the oil heater 11 according to the oil temperature control routine shown in FIG.
- the oil temperature control routine is a routine stored in advance in the ROM of the ECU 7 and is periodically executed by the ECU 7.
- the ECU 7 first executes the process of S101.
- S101 the ECU 7 reads the output signal (first oil temperature) Toil1 of the first oil temperature sensor 80 and the charge amount SOC of the battery 12.
- the ECU 7 determines whether or not the first oil temperature Toil1 read in S101 is higher than the first predetermined temperature ⁇ .
- the first predetermined temperature ⁇ is the upper limit value of the temperature at which the decrease amount of the engine load due to the operation of the oil heater 11 is surely greater than the increase amount of the engine load due to the increase in the power generation amount of the alternator 6 accompanying the operation of the oil heater 11. It is. Therefore, if a negative determination is made in S102 (Toil1 ⁇ ), the ECU 7 proceeds to S107 and permits the power generation of the alternator 6. That is, heating of oil by the oil heater 11 is permitted.
- the ECU 7 determines whether or not the first oil temperature Toil1 read in S101 is lower than a second predetermined temperature ⁇ .
- the second predetermined temperature ⁇ is a lower limit value of a temperature range where it is considered that heating of oil by the oil heater 11 is not necessary (in other words, an upper limit value of a temperature range where heating of the oil by the oil heater 11 is considered necessary).
- the ECU 7 determines whether or not the charge amount SOC read in S101 is equal to or greater than a third predetermined value ⁇ .
- the third predetermined value ⁇ is a lower limit value of the charge amount that is considered not to require charging of the battery 12, and is a value obtained experimentally in advance.
- S104 If a negative determination is made in S104 (SOC ⁇ ), since charging of the battery 12 is indispensable, the ECU 7 proceeds to S107.
- S ⁇ b> 107 the ECU 7 allows the alternator 6 to generate power.
- the power generation amount at that time is set to an amount that can charge the battery 12 and operate the oil heater 11. As a result, although the engine load may increase, it is possible to increase the temperature of the oil while increasing the charge amount of the battery 12.
- S104 If an affirmative determination is made in S104 (SOC ⁇ ⁇ ), the ECU 7 proceeds to S105.
- the ECU 7 reduces the amount of engine load due to the oil heater 11 raising the temperature of oil (the value obtained by converting the amount of friction reduction into the amount of decrease in engine load (torque)) ⁇ Feng, An increase amount ⁇ Talt of the engine load (torque) due to the power generation operation of the alternator 6 to supply energy is calculated.
- the increase amount ⁇ Talt of the engine load due to the power generation operation of the alternator 6 can be calculated using the value of the excitation current applied to the alternator 6 and the power generation voltage of the alternator 6 as parameters. At that time, the relationship between the excitation current, the generated voltage, and the engine load required to drive the alternator 6 may be experimentally obtained in advance.
- the reduction amount ⁇ Feng of the engine load due to the oil heater 11 raising the temperature of the oil can be calculated using the first oil temperature Toil1 as a parameter.
- a method of calculating the engine load reduction amount ⁇ Feng will be described with reference to FIGS.
- the ECU 7 uses the output signal of the first oil temperature sensor 80 (first oil temperature Toil1) and the output signal of the hydraulic sensor 9 (hydraulic pressure Poil) as parameters to determine a predetermined engine speed (hereinafter referred to as “reference rotation”).
- the engine load (hereinafter referred to as “reference load”) is calculated.
- the ECU 7 uses the map shown in FIG. 4 as a reference load (hereinafter referred to as the following) with the output signal (first oil temperature Toil1) of the first oil temperature sensor 80 and the output signal (hydraulic pressure Poil) of the hydraulic sensor 9 as arguments. (Referred to as “first reference load Foil01”).
- actual engine speed the engine speed when the first oil temperature Toil1 and the hydraulic pressure Poil are measured (hereinafter referred to as “actual engine speed”) is likely to be different from the reference speed. Therefore, when the actual engine speed is different from the reference engine speed, it is necessary to correct the first reference load Foil01 based on the actual engine speed.
- FIG. 5 shows the results of measuring the relationship between the oil temperature, the engine speed, and the engine load when the oil pressure is constant.
- the engine load tends to increase as the engine speed increases even if the oil pressure and oil temperature are constant. For this reason, when the actual engine speed is higher than the reference speed, the first reference load Foil01 needs to be increased and corrected, and when the actual engine speed is lower than the reference speed, the first reference load Foil01 needs to be decreased and corrected. There is.
- the ECU 7 corrects the first reference load Foil01 with a correction coefficient based on the actual engine speed (hereinafter, referred to as “rotation speed correction coefficient”), whereby the engine load at the actual engine speed (hereinafter referred to as “the first engine speed”).
- Engine load Foil1 the engine load at the actual engine speed
- FIG. 6 is a diagram showing the relationship between the rotational speed correction coefficient and the engine rotational speed.
- the engine speed correction coefficient shown in FIG. 6 is a value obtained by dividing the engine load at each engine speed (similar to FIG. 4, the engine load measured under a constant engine speed) by the reference load.
- the relationship shown in FIG. 6 is assumed to be mapped in advance by a fitting operation using an experiment or the like.
- the ECU 7 uses the map shown in FIG. 6 to calculate the rotational speed correction coefficient using the actual engine rotational speed as an argument. Subsequently, the ECU 7 calculates the first engine load Foil1 by multiplying the first reference load Foil01 by the rotation speed correction coefficient obtained from FIG.
- the ECU 7 uses the oil temperature (hereinafter referred to as “temporary second oil temperature Toil20”) that the second oil temperature sensor 81 will detect when the oil heater 11 is operated as a parameter.
- An engine load after the heater 11 is operated (hereinafter referred to as “second engine load Foil2”) is estimated and calculated.
- the temporary second oil temperature Toil 20 is a parameter of the first oil temperature Toil 1, the heating amount of the oil heater 11 (the amount of current supplied from the alternator 6 to the oil heater 11), and the amount of oil passing through the oil heater 11 per unit time. Can be computed as When the temporary second oil temperature Toil 20 is obtained in this way, the ECU 7 calculates the second engine load Foil 2 by the same procedure as the first engine load Foil 1 described above.
- the ECU 7 proceeds to S106.
- the ECU 7 compares the decrease amount ⁇ Feng of the engine load obtained in S105 with the increase amount ⁇ Talt. That is, the ECU 7 determines whether or not the decrease amount ⁇ Feng of the engine load is larger than the increase amount ⁇ Talt.
- the ECU 7 proceeds to S107 and permits the power generation operation of the alternator 6 for the purpose of operating the oil heater 11.
- the oil heater 11 can be operated without increasing the engine load.
- the friction of the internal combustion engine 1 can be reduced without causing an increase in fuel consumption.
- the ECU 7 determines whether or not the charge amount SOC of the battery 12 is equal to or greater than a fourth predetermined value ⁇ .
- the fourth predetermined value ⁇ is a lower limit value of the charge amount that is considered that the state of charge of the battery 12 is not less than the third predetermined value ⁇ described above when the oil heater 11 is operated using the power of the battery 12. Yes, it is required in advance by adaptation work using experiments.
- the fourth predetermined value ⁇ corresponds to the specified amount according to the present invention.
- the ECU 7 determines whether or not the vehicle is decelerating in S111, in other words, the state in which the rotational force of the driving wheel of the vehicle is input to the internal combustion engine 1 (actuating the alternator 6 by the rotational force of the driving wheel). It is determined whether it is in a state in which If an affirmative determination is made in S111, the ECU 7 proceeds to S107 and permits the operation of the alternator 6 for the purpose of operating the oil heater 11. If a negative determination is made in S111, the ECU 7 ends the execution of this routine without operating the alternator 6.
- the control means according to the present invention is realized by the ECU 7 executing the processing from S106 to S111.
- the friction of the internal combustion engine 1 can be reduced without causing an increase in fuel consumption except when the charge amount of the battery 12 is insufficient.
- the difference between the present embodiment and the first embodiment described above is that the oil is heated using the electric energy generated by the alternator in the first embodiment, whereas the alternator is generated in this embodiment.
- the heat is used to heat the oil.
- FIG. 7 is a diagram showing a schematic configuration of a lubrication system for an internal combustion engine in the present embodiment.
- the internal combustion engine lubrication system includes an alternator 60 instead of the oil heater.
- the alternator 60 of the present embodiment is configured to be able to exchange heat directly with oil.
- FIG. 8 is a flowchart showing an oil temperature control routine in the present embodiment.
- the same processes as those in the oil temperature control routine of FIG. 8 are identical processes as those in the oil temperature control routine of FIG. 8.
- the ECU 7 executes S201 instead of S101 of FIG.
- the ECU 7 reads the output signal (first oil temperature) Toil1 of the first oil temperature sensor 80.
- the ECU 7 proceeds to S102 after executing the process of S201. If an affirmative determination is made in S102 and S103, the ECU 7 sequentially executes the processes of S105 and S106. At this time, in S105, the engine load decrease amount ⁇ Feng when the oil is heated by the heat generated when the alternator 60 performs the power generation operation, and the engine load when the alternator 60 performs the power generation operation for the purpose of heating the oil. Increase amount ⁇ Talt is calculated. The calculation method of the engine load decrease amount ⁇ Feng and the increase amount ⁇ Talt is the same as in the first embodiment.
- the ECU 7 proceeds to S111 and permits the power generation operation of the alternator 60 for the purpose of heating the oil only during deceleration of the vehicle.
- the friction of the internal combustion engine 1 can be reduced without causing an increase in fuel consumption.
- the difference between the present embodiment and the first embodiment described above is that the oil is heated using the electric energy generated by the alternator in the first embodiment, whereas the alternator is generated in this embodiment.
- the point is that the oil is heated by using the electric energy and the heat energy.
- FIG. 9 is a diagram showing a schematic configuration of a lubrication system for an internal combustion engine in the present embodiment.
- the lubrication system for the internal combustion engine includes an oil heater 11 and an alternator 60.
- the alternator 60 of the present embodiment is configured to be able to transfer the heat generated by the alternator 60 to oil, as in the second embodiment described above.
- the oil heater 11 when the oil heater 11 is operated, the oil is heated not only by the heat generated by the oil heater 11 but also by the heat generated by the alternator 60. Therefore, the reduction amount ⁇ Feng of the engine load when the alternator 60 is operated for the purpose of operating the oil heater 11 is larger than when the oil is heated only by the oil heater 11. Therefore, it is possible to obtain the same effect as that of the first embodiment described above, and to increase the chances that the oil heater 11 can be operated.
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Abstract
Description
内燃機関の発生動力を利用して発電を行う発電機と、
前記発電機が発電動作したときに発生するエネルギを利用して内燃機関の潤滑油を加熱する加熱機構と、
前記加熱機構を経由する前の潤滑油の温度を検出する第1検出手段と、
前記第1検出手段の検出値をパラメータとして、前記加熱機構が潤滑油を加熱することによる機関負荷の減少量を演算する第1演算手段と、
前記加熱機構へエネルギを供給するために発電機が発電動作することによる機関負荷の増加量を演算する第2演算手段と、
前記第1演算手段の演算結果が前記第2演算手段の演算結果を上回る場合は、前記加熱機構へエネルギを供給するために前記発電機が発電動作することを許可する制御手段と、
を備えるようにした。
先ず、本発明の第1の実施例について図1乃至図6に基づいて説明する。図1は、内燃機関の潤滑システムの概略構成を示す図である。図1において、内燃機関の潤滑システムは、内燃機関1の潤滑油としてのオイルを貯蔵するためのオイル貯蔵タンク2を備えている。オイル貯蔵タンク2は、内燃機関1の下部に取り付けられたオイルパンであってもよく、内燃機関1から分離して配置されるタンクであってもよい。
次に、本発明の第2の実施例について図7乃至図8に基づいて説明する。ここでは、前述した第1の実施例と異なる構成について説明し、同様の構成については説明を省略する。
次に、本発明の第3の実施例について図9に基づいて説明する。ここでは、前述した第1の実施例と異なる構成について説明し、同様の構成については説明を省略する。
2 オイル貯蔵タンク
3 オイルポンプ
4 オイルフィルタ
5 オイルクーラ
6 オルタネータ
7 ECU
9 油圧センサ
10 アクセルポジションセンサ
11 オイルヒータ
12 バッテリ
50 熱交換器
51 流量調整弁
60 オルタネータ
80 第1油温センサ
81 第2油温センサ
Claims (8)
- 内燃機関の発生動力を利用して発電を行う発電機と、
前記発電機が発電動作したときに発生するエネルギを利用して内燃機関の潤滑油を加熱する加熱機構と、
前記加熱機構を経由する前の潤滑油の温度を検出する第1検出手段と、
前記第1検出手段の検出値をパラメータとして、前記加熱機構が潤滑油を加熱することによる機関負荷の減少量を演算する第1演算手段と、
前記加熱機構へエネルギを供給するために前記発電機が発電動作することによる機関負荷の増加量を演算する第2演算手段と、
前記第1演算手段の演算結果が前記第2演算手段の演算結果を上回る場合は、前記加熱機構へエネルギを供給するために前記発電機が発電動作することを許可する制御手段と、
を備えることを特徴とする内燃機関の潤滑システム。 - 請求項1において、前記発電機が発電動作したときに発生するエネルギは熱エネルギであり、
前記加熱機構は、前記発電機が発電動作したときに発生する熱エネルギを潤滑油に伝達する熱交換機構であることを特徴とする内燃機関の潤滑システム。 - 請求項2において、前記制御手段は、前記第1演算手段の演算結果が前記第2演算手段の演算結果を下回る場合は、前記発電機が回生発電可能となる条件下において前記発電機を回生発電させるとともに該発電機が発生した熱エネルギにより前記熱交換機構を作動させることを特徴とする内燃機関の潤滑システム。
- 請求項1において、前記発電機が発電動作したときに発生するエネルギは電気エネルギであり、
前記加熱機構は、前記発電機が発生した電気エネルギを熱エネルギに変換して潤滑油に伝達する電気式ヒータであることを特徴とする内燃機関の潤滑システム。 - 請求項1において、前記発電機が発電動作したときに発生するエネルギは、熱エネルギと電気エネルギであり、
前記加熱機構は、前記発電機が発電動作したときに発生する熱エネルギを潤滑油に伝達する熱交換機構と前記発電機が発生した電気エネルギを熱エネルギに変換して潤滑油に伝達する電気式ヒータとを含むことを特徴とする内燃機関の潤滑システム。 - 請求項4又は5において、前記発電機が発生した電気エネルギを蓄えるバッテリを更に備え、
前記制御手段は、前記第1演算手段の演算結果が前記第2演算手段の演算結果を下回る場合に、前記バッテリの電気エネルギを利用して前記電気式ヒータを作動させることを特徴とする内燃機関の潤滑システム。 - 請求項6において、前記制御手段は、前記バッテリの蓄電量が予め定められた規定量を下回っている場合は、前記発電機が回生発電可能となる条件下において前記発電機を回生発電させるとともに該発電機が発生したエネルギを前記加熱機構へ供給することを特徴とする内燃機関の潤滑システム。
- 請求項1乃至7の何れか一において、前記加熱機構を経由した後の潤滑油の温度を検出する第2検出手段を更に備え、
前記制御手段は、前記第2検出手段の検出値が予め定められた上限温度を超えた場合に、前記加熱機構へエネルギを供給するために前記発電機が発電動作することを停止させることを特徴とする内燃機関の潤滑システム。
Priority Applications (5)
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EP09851278.3A EP2500534B1 (en) | 2009-11-13 | 2009-11-13 | Lubrication system of an internal combustion engine |
US13/509,107 US8739757B2 (en) | 2009-11-13 | 2009-11-13 | Lubrication system of an internal combustion engine |
JP2011540369A JP5293834B2 (ja) | 2009-11-13 | 2009-11-13 | 内燃機関の潤滑システム |
PCT/JP2009/069379 WO2011058648A1 (ja) | 2009-11-13 | 2009-11-13 | 内燃機関の潤滑システム |
CN200980162381.0A CN102667079B (zh) | 2009-11-13 | 2009-11-13 | 内燃机的润滑系统 |
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JP5821273B2 (ja) * | 2011-05-19 | 2015-11-24 | いすゞ自動車株式会社 | 歯車装置とそれを搭載した車両 |
US8851055B2 (en) * | 2011-06-17 | 2014-10-07 | GM Global Technology Operations LLC | Method and apparatus for controlling hybrid powertrain system in response to engine temperature |
US20140299084A1 (en) * | 2013-04-05 | 2014-10-09 | Deere & Company | Utilization of coolant heater exhaust to preheat engine oil |
DE102019214371A1 (de) * | 2019-09-20 | 2021-03-25 | Ford Global Technologies, Llc | Hybridelektrofahrzeug |
CN113847140B (zh) * | 2021-09-08 | 2023-03-03 | 东风汽车集团股份有限公司 | 一种增程器润滑冷却系统、混动汽车和控制方法 |
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CN102667079A (zh) | 2012-09-12 |
EP2500534A4 (en) | 2012-11-21 |
JPWO2011058648A1 (ja) | 2013-03-28 |
EP2500534A1 (en) | 2012-09-19 |
CN102667079B (zh) | 2014-07-09 |
US20120222647A1 (en) | 2012-09-06 |
US8739757B2 (en) | 2014-06-03 |
EP2500534B1 (en) | 2017-10-11 |
JP5293834B2 (ja) | 2013-09-18 |
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