JP2024016431A - automotive engine - Google Patents

Abstract

An object of the present invention is to provide an automobile engine that can convert the combustion energy of gasoline and the steam energy of vaporized atomized water into power, and can obtain a predetermined engine output from the combustion energy and steam energy. In an automobile engine (10), gasoline injected from a fuel injector (40) is supplied to a combustion chamber (46a) of a cylinder (46), and a mist of water having a substantially uniform average particle diameter is supplied to the cylinder (46) from a mist water supply mechanism (20). Water is supplied to the combustion chamber 46a of the combustion chamber 46, and the mixture containing gasoline in the combustion chamber 46a, which is compressed to a predetermined compression ratio by the piston 47, is ignited by the spark plug 48, and a mist-like mixture is generated by the combustion heat of the combustion gas in the combustion chamber 46a. The atomized water is vaporized, and the combustion energy of the combustion gas and the steam energy of the vaporized atomized water are converted into power. [Selection diagram] Figure 6

Description

The present invention relates to an automobile engine installed in an automobile.

a hydrogen engine; a first water injection means that is provided for each cylinder of the hydrogen engine and injects water into the combustion chamber of the corresponding cylinder or into an intake port communicating with the combustion chamber; and an intake manifold for each intake port of the hydrogen engine. a second water injection means for injecting water into the intake passage or the intake manifold, which is connected to the intake passage through the intake passage; and a second water injection means for injecting water into the intake passage or the intake manifold; a detection means for detecting the occurrence of a fire; and when the detection means detects the occurrence of a backfire in the intake path of a certain cylinder, a detection means is provided for the cylinder based on one or more physical quantities that change due to the occurrence of the backfire; A first water injection provided for the cylinder so as to determine the amount of water to be injected to the first water injection means and the amount of water to be injected to the second water injection means, and to inject the determined amount of water. A hydrogen engine system is disclosed that includes a control means for controlling the water injection means and the second water injection means (see Patent Document 1).

Japanese Patent Application Publication No. 2016-118109

The hydrogen engine system disclosed in Patent Document 1 injects water into a combustion chamber of a cylinder or an intake port communicating with a combustion chamber, and also injects water into an intake passage or an intake manifold disposed in an intake passage or an intake manifold. By jetting water, it is possible to prevent the intake manifold from being excessively heated due to backfire. However, this hydrogen engine system injects water into the combustion chamber of the cylinder, the intake port communicating with the combustion chamber, the intake passage, the intake passage arranged in the intake manifold, and the intake manifold. There is no conversion.

An object of the present invention is to be able to convert the combustion energy of gasoline and the steam energy of vaporized atomized water into power, to obtain a predetermined engine output from the combustion energy and steam energy, and to An object of the present invention is to provide an automobile engine capable of driving the automobile using combustion energy and vapor energy of atomized water. Another object of the present invention is to increase steam energy in proportion to an increase in engine rotation speed (rpm) or an increase in accelerator opening; An object of the present invention is to provide an automobile engine capable of reducing steam energy in proportion to the amount of steam.

The present invention is based on an injector that injects gasoline, a cylinder with a predetermined volume, a piston that reciprocates in the combustion chamber of the cylinder, and a mixture of air or gasoline and air in the combustion chamber of the cylinder. This automobile engine has an intake valve that supplies air with air, an exhaust valve that exhausts combustion gas from a combustion chamber of a cylinder, and a spark plug that ignites a mixture containing gasoline in the combustion chamber of the cylinder.

A feature of the present invention based on the above premise is that an automobile engine is equipped with a mist water supply mechanism that supplies mist water to the combustion chamber of the cylinder, and in the automobile engine, gasoline injected from an injector is supplied to the combustion chamber of the cylinder. A mist-like water having a substantially uniform average particle diameter is supplied to the combustion chamber of the cylinder from the mist water supply mechanism, and the mixture containing gasoline in the combustion chamber is compressed to a predetermined compression ratio by the piston. It is ignited by a spark plug, vaporizes a mist of water using the combustion heat of the combustion gas in the combustion chamber, and converts the combustion energy of the combustion gas and the steam energy of the vaporized water into power. .

As an example of the present invention, in an automobile engine, air or a mixture of gasoline and air is supplied from an intake valve to a combustion chamber of a cylinder, and at the same time, mist water is supplied from a mist water supply mechanism to a combustion chamber of a cylinder. Ru.

As another example of the present invention, in an automobile engine, mist water is supplied from a mist water supply mechanism to a combustion chamber of a cylinder when the engine rotational speed (rpm) reaches 1000 (rpm) or more.

As another example of the present invention, an automobile engine supplies water from a mist water supply mechanism in proportion to an increase in engine rotation speed (rpm) when the automobile is running on a flat road, when running uphill, or when accelerating. A mist water supply mechanism that increases the amount of mist water supplied to the combustion chamber (cc/min) in proportion to the decrease in engine speed (rpm) when the car is running on a flat road or when driving at deceleration. Reduce the amount of mist water (cc/min) supplied to the combustion chamber.

As another example of the present invention, in an automobile engine, the amount (cc/min) of mist water to be supplied to the combustion chamber is determined based on the opening degree of the accelerator when the automobile is traveling downhill.

As another example of the present invention, an automobile engine supplies water from a mist water supply mechanism in proportion to an increase in engine rotation speed (rpm) when the automobile is running on a flat road, when running uphill, or when accelerating. The average particle diameter (μm) of the mist water supplied to the combustion chamber is increased, and the mist water supply mechanism increases the average particle diameter (μm) of the mist water that is supplied to the combustion chamber, and the mist water supply mechanism The average particle size (μm) of the atomized water supplied to the combustion chamber is reduced.

As another example of the present invention, an automobile engine has an average particle diameter (μm ) is minimized.

As another example of the present invention, an automobile engine includes a temperature sensor installed in a cylinder to measure the combustion temperature of the combustion chamber, and in the automobile engine, the combustion temperature of the combustion chamber measured by the temperature sensor is the upper limit temperature. When this temperature is reached, the amount of mist water supplied to the combustion chamber of the cylinder (cc/min) is increased to maintain the combustion temperature of the combustion chamber below the upper limit temperature.

As another example of the present invention, the mist water supply mechanism includes a mist water generation pipe that generates mist water, and an air filter that removes impurities contained in air flowing into the mist water production pipe. An electronically controlled throttle is installed downstream of the air filter to adjust the air flow rate, and an electronically controlled throttle is installed downstream of the electronically controlled throttle in the atomized water generation tube to inject a mist of water into the atomized water generation tube. It is formed from a water injection nozzle.

As another example of the present invention, the water injection nozzle has an injection surface that draws a semicircular arc toward the inside of the atomized water generating tube, and a plurality of injection ports that inject mist-like water. , the injection surface is perforated.

In another example of the present invention, the mist water supply mechanism is a water injector that directly injects mist water into the combustion chamber of the cylinder.

In another example of the present invention, the average particle size of the mist water injected from the injection ports of the water injection surface of the water injection nozzle or the water injection injector is in the range of 30 to 75 μm.

According to the automobile engine according to the present invention, gasoline injected from the injector is supplied to the combustion chamber of the cylinder, and mist-like water having a substantially uniform average particle size is supplied from the mist water supply mechanism to the combustion chamber of the cylinder. Water is supplied and the mixture containing gasoline in the combustion chamber is compressed to a predetermined compression ratio by the piston, and is ignited by the spark plug, and the mist of water is instantly vaporized by the combustion heat of the combustion gas in the combustion chamber. Since the combustion energy of combustion gas and the steam energy of vaporized mist water are converted into power, the combustion energy of the mixture containing gasoline and the steam energy of vaporized mist water are converted into power for the engine. A predetermined engine output can be obtained from the combustion energy and the steam energy, and the automobile can be driven by the combustion energy of the mixture containing gasoline and the steam energy of the atomized water.

An automobile engine, in which air or a mixture of gasoline and air is supplied from an intake valve to a combustion chamber of a cylinder, and at the same time mist water is supplied from a mist water supply mechanism to a combustion chamber of a cylinder, is a mixture containing gasoline. It is possible to instantly vaporize the mist-like water at the same time as the combustion of the water, and the steam energy of the vaporized water can be converted into power along with the combustion energy of the combustion gas, and the combustion energy and steam can be converted into power. A predetermined engine output can be obtained from the energy.

Automotive engines in which mist water is supplied from the mist water supply mechanism to the combustion chamber of the cylinder when the engine rotation speed (rpm) is 1000 (rpm) or more, the engine rotation speed (rpm) is less than 1000 (rpm). Even if mist water is supplied to the combustion chamber of the cylinder during idling, downhill driving, or deceleration driving, the steam energy cannot be used to drive the car, but if the engine speed (rpm) is 1000 (rpm) ) When driving on a flat road, uphill, or accelerating, mist water is supplied to the combustion chamber from the mist water supply mechanism, so the steam energy of the vaporized water is effectively used for driving the car. can do. In an automobile engine, when the engine speed (rpm) is less than 1000 (rpm), mist water is not supplied to the combustion chamber of the cylinder, thereby preventing wasteful consumption of steam energy.

The amount of mist water supplied from the mist water supply mechanism to the combustion chamber (cc/ The amount of mist water supplied from the mist water supply mechanism to the combustion chamber (cc Automotive engines that reduce water per minute (rpm) produce a mist that supplies water to the combustion chamber in proportion to the increase in engine speed (rpm) when the car is running on a flat road, when running uphill, or when accelerating. By increasing the amount of water supplied (cc), the steam energy can be increased as the engine speed (rpm) increases, and the engine output (kW) can be increased as the engine speed (rpm) increases. In addition, the engine can be smoothly shifted from low speed rotation to high speed rotation when the vehicle is traveling on a flat road, when traveling uphill, or when driving under acceleration. In an automobile engine, the amount of mist water supplied to the combustion chamber (cc) is reduced in proportion to the decrease in engine speed (rpm) when the automobile is running on a flat road or when the vehicle is decelerating. Therefore, steam energy can be reduced as the engine speed (rpm) decreases, and engine output (kW) can be reduced as the engine speed (rpm) decreases.

When a car is running downhill, the amount of mist water supplied to the combustion chamber (cc/min) is determined based on the degree of opening of the accelerator. Although expensive, there is no need to accelerate by stepping on the accelerator, so there is no need to increase or decrease steam energy by increasing or decreasing engine speed (rpm), and the amount of mist water supplied (cc/min) is determined by the degree of opening of the accelerator. By doing so, it is possible to supply the optimum amount of mist water to the combustion chamber according to the opening degree of the accelerator when driving downhill, and it is possible to prevent wasteful consumption of steam energy.

The average particle diameter (μm) of mist water supplied from the mist water supply mechanism to the combustion chamber in proportion to the increase in engine rotation speed (rpm) when the vehicle is running on a flat road, uphill, or accelerating. ), and the average particle diameter (μm ), an automobile engine that supplies water in the form of mist to the combustion chamber in proportion to an increase in engine speed (rpm) when the automobile is running on a flat road, when running uphill, or when accelerating. By increasing the average particle diameter (μm), steam energy can be increased as the engine speed (rpm) increases, and engine power (kW) can be increased as the engine speed (rpm) increases. In addition, the engine can smoothly shift from low-speed rotation to high-speed rotation when the vehicle is traveling on a flat road, when traveling uphill, or when accelerating. Automotive engines reduce the average particle size (μm) of mist water supplied to the combustion chamber in proportion to the decrease in engine rotation speed (rpm) when the car is running on a flat road or when it is decelerating. By doing so, the steam energy can be reduced as the engine speed (rpm) decreases, and the engine output (kW) can be reduced as the engine speed (rpm) decreases.

An automobile engine that minimizes the average particle diameter (μm) of the mist water supplied from the mist water supply mechanism to the combustion chamber either when the car is running downhill or when the brakes are applied is Although the engine speed (rpm) is high, there is no need to accelerate by stepping on the accelerator, so there is no need to increase or decrease steam energy by increasing or decreasing the engine speed (rpm), and the average particles of mist water when driving downhill. By minimizing the diameter (μm), wasteful consumption of steam energy can be prevented and the load on the automobile engine can be reduced. Since the engine speed (rpm) of an automobile engine is low when the car is braking, the average particle diameter (μm) of the mist water can be increased or decreased by increasing or decreasing the engine speed (rpm). By minimizing the average particle diameter (μm) of atomized water during braking, it is possible to prevent wasted steam energy consumption and reduce the load on automobile engines. Can be done.

a temperature sensor installed in the cylinder to measure the combustion temperature of the combustion chamber, and an amount of mist water supplied to the combustion chamber of the cylinder when the combustion temperature of the combustion chamber measured by the temperature sensor reaches an upper limit temperature; (cc/min) to maintain the combustion temperature in the combustion chamber below the upper limit temperature.Increasing the amount of mist water supplied to the combustion chamber of the cylinder when the upper limit temperature is reached. The increased mist water can cool the combustion chamber, lower the temperature of the combustion chamber below the upper limit temperature, and prevent the engine from inadvertently overheating.

The mist water supply mechanism is installed downstream of the air filter, which removes impurities contained in the air flowing into the mist water generation pipe that generates mist-like water, and the air flow rate that flows into the mist water generation pipe. An automobile engine comprising: an electronically controlled throttle to adjust; and a water injection nozzle installed downstream of the electronically controlled throttle in the atomized water generating tube to inject a mist of water into the atomized water generating tube. The mist water is injected from the mist nozzle to the atomized water generation tube, and the atomized water is supplied from the atomized water generation tube to the combustion chambers of all cylinders. Atomized water can be evenly supplied, and by vaporizing the atomized water in the combustion chambers of all cylinders, the steam energy of the vaporized atomized water is used together with the combustion energy of the mixture containing gasoline to power the engine. can be reliably converted to .

An automobile engine in which the mist nozzle has an injection surface that forms a semicircular arc toward the inside of the mist water generating tube, and the injection surface is perforated with a plurality of injection ports that eject mist water. Since the mist-like water is injected into the mist-water generation pipe from the plurality of injection ports on the injection surface forming a semicircular arc, the mist-like mist-like water is evenly injected into the mist-like water generation pipe. This makes it possible to evenly supply atomized water to the combustion chambers of all cylinders, and to reliably convert the steam energy of the vaporized atomized water together with the combustion energy of the mixture containing gasoline into engine power. be able to.

In automobile engines, where the mist water supply mechanism is a water injection injector that directly injects mist water into the combustion chambers of the cylinders, the mist water is injected directly from the water injector into the combustion chambers of all cylinders. Atomized water can be evenly supplied from the water injector to the combustion chambers of all cylinders, and by vaporizing the atomized water in the combustion chambers of all cylinders, it is vaporized together with the combustion energy of the mixture containing gasoline. The steam energy of the misted water can be reliably converted into engine power.

An automobile engine in which the average particle size of the mist water injected from the injection ports or the water injection injector on the injection surface of the water injection nozzle is in the range of 30 to 75 μm, the atomized water with the above average particle size is injected into the water injection nozzle. By injecting the atomized water with the above-mentioned average particle size into the atomized water generation pipe from the water injection injector directly into the combustion chamber of the cylinder, the atomized water with the average particle size can be injected into all the cylinders. Since the water is supplied to the combustion chambers of these cylinders, the atomized water can be reliably vaporized in the combustion chambers of these cylinders, and the steam energy of the vaporized atomized water along with the combustion energy of the mixture containing gasoline can be used to power the engine. It can be used as

FIG. 1 is a top view showing an example of an automobile equipped with an automobile engine. A side view of a car equipped with an automotive engine. A rear view of a car equipped with an automotive engine. The layout diagram showing an example of an automobile engine, a mist water supply mechanism, and an electrical system. The figure which shows an example of a water injection nozzle. FIG. 1 is a configuration diagram of an automobile engine shown as an example. The side view of the accelerator unit shown as an example. The front view of the accelerator unit shown as an example. The figure which shows an example of the correlation between the engine rotation speed of an automobile engine, and the water supply amount of mist water. The figure which shows another example of the correlation between the engine rotation speed of an automobile engine, and the water supply amount of mist water.

The details of the automotive engine according to the present invention will be described below with reference to the accompanying drawings such as FIG. 1, which is a top view showing an example of a vehicle 11 equipped with the automotive engine 10 of the present invention. Note that FIG. 2 is a side view of the vehicle 11 equipped with the vehicle engine 10, and FIG. 3 is a rear view of the vehicle 11 equipped with the vehicle engine 10.

The automobile engine 10 is installed in the automobile 11 and uses gasoline as its fuel. Note that there is no particular limitation on the type of vehicle 11 equipped with the automotive engine 10. An automobile 11 shown as an example has an automobile engine 10 mounted in a front area 12 (engine room), and a gasoline tank 15 (high pressure tank) and a water supply pump unit 16 (see FIG. 4) installed in a rear area 14 (tank room). In addition, a water tank 17 is arranged in the intermediate area 13.

The gasoline tank 15 (fuel tank) stores filled gasoline. The water tank 17 contains tap water or pure water. A water filling port 18 (water filling port) is installed in the water tank 17 . The water tank 17 is replenished with water (tap water or pure water) from the water inlet 18 . In the automobile 11, gasoline is supplied from the gasoline tank 15 to the automobile engine 10, water mist is generated from water (tap water or pure water) supplied from the water tank 17, and the mist water is supplied to the engine 10. (injected).

Each control of the automobile engine 10 is performed by an ECU 26 (electronic control unit) (see FIG. 6). The ECU 26 is a physical computer that includes a central processing unit (CPU or MPU), memory (main memory and cache memory), and a large capacity storage area.

The ECU 26 receives the engine rotation speed (rpm) from the rotation speed sensor 19 (see FIG. 4) of the engine rotation speed measurement unit that measures the engine rotation speed (rpm) of the engine 10. The ECU 26 receives an angle signal from an angle sensor (not shown) that measures the angle when the vehicle 11 is traveling, determines whether the vehicle 11 is traveling on a flat road based on the received angle signal, and determines whether the vehicle 11 is traveling on an uphill slope. It is also determined whether the automobile 11 is traveling downhill.

The ECU 26 receives an acceleration signal from an acceleration sensor (not shown) that measures the acceleration of the car 11 while it is running, and also receives a speed signal from a speed sensor (not shown) that measures the speed of the car 11 while it is running. Then, based on the received acceleration signal and speed signal, it is determined whether the vehicle 11 is running at an accelerated speed or whether the vehicle 11 is running at a deceleration. The ECU 26 receives a brake signal indicating that the brake has been applied while the vehicle 11 is running from a brake sensor (not shown) installed on a brake pedal (not shown) of the vehicle 11, and uses the received brake signal to Based on this, it is determined whether or not the vehicle 11 is braking.

The ECU 26 transmits water from the mist water supply mechanism 20 (see FIG. 4) to the cylinder 46 in proportion to an increase in engine speed (rpm) when the vehicle 11 is traveling on a flat road, traveling uphill, or accelerating. A first water supply amount increasing means is implemented to increase the water supply amount (cc/min) of the mist water supplied to the combustion chamber 46a (see FIG. 6). The ECU 26 supplies mist water from the mist water supply mechanism 20 to the combustion chamber 46a of the cylinder 46 in proportion to a decrease in engine speed (rpm) when the vehicle 11 is running on a flat road or at a reduced speed. A water supply amount reduction means is implemented to reduce the water supply amount (cc/min). The cache memory or large-capacity storage area of the ECU 26 stores (stores) the correlation between an increase in engine speed (rpm) and an increase in the amount of water supply (cc/min) of atomized water. ) and the decrease in the amount of water supply (cc/min) of mist water are stored.

The ECU 26 receives the combustion temperature from a temperature sensor 53 that measures the combustion temperature of the combustion chamber 46a of the cylinder 46, and when the received combustion temperature of the combustion chamber 46a reaches the upper limit temperature, mist water is supplied to the combustion chamber 46a. A second water supply amount increasing means is implemented to increase the water supply amount (cc/min) of the water supply amount (cc/min). The cache memory or large-capacity storage area of the ECU 26 stores (stores) the upper limit temperature of the combustion temperature of the combustion chamber 46a and the amount of mist water supplied (cc/min) when the upper limit temperature is reached.

The ECU 26 transmits mist from the water supply mechanism 20 to the combustion chamber 46a of the cylinder 46 in proportion to an increase in engine speed (rpm) when the vehicle 11 is traveling on a flat road, traveling uphill, or accelerating. Means for increasing the average particle size is implemented to increase the average particle size (μm) of the atomized water to be supplied. The ECU 26 controls average particles of mist water to be supplied from the mist water supply mechanism 20 to the combustion chamber 46a in proportion to a decrease in engine speed (rpm) when the automobile 11 is traveling on a flat road or decelerating. Implement mean particle size reduction means to reduce the diameter (μm). The cache memory or large-capacity storage area of the ECU 26 stores (stores) the correlation between the increase in engine speed (rpm) and the increase in the average particle diameter (μm) of atomized water, and The correlation between the decrease in the average particle diameter (μm) of the atomized water and the decrease in the average particle diameter (μm) of the atomized water is stored.

The ECU 26 determines the amount of mist water supplied to the combustion chamber 46a of the cylinder 46 based on the degree of opening (°) (depression amount of the accelerator pedal) of the accelerator pedal 35 (see FIG. 7) when the automobile 11 is traveling downhill. cc/min). The cache memory or large-capacity storage area of the ECU 26 stores therein the correlation between the opening degree (°) of the accelerator pedal 35 and the amount of mist water supplied (cc/min). The ECU 26 implements an average particle diameter minimizing means for minimizing the average particle diameter (μm) of the mist water supplied from the mist water supply mechanism 20 to the combustion chamber 46a when the automobile 11 travels downhill.

The ECU 26 controls the minimum water supply amount to minimize the amount (cc/min) of mist water supplied from the mist water supply mechanism 20 to the combustion chamber 46a of the cylinder 46 when the brakes of the automobile 11 are applied (during braking). At the same time, the means for minimizing the average particle diameter is implemented to minimize the average particle diameter (μm) of the mist water supplied from the mist water supply mechanism 20 to the combustion chamber 46a. The cache memory or mass storage area of the ECU 26 stores (stores) the minimum value of the water supply amount (cc/min) of the mist water, and stores (stores) the minimum value of the average particle diameter (μm) of the mist water. ) has been done. In addition, the minimum value of the water supply amount (cc/min) of mist water is in the range of 32.5 (cc/min) or more and 33.5 or less, and the minimum value of the average particle diameter (μm) of the mist water is , in the range of 30 to 32 μm.

FIG. 4 is a layout diagram showing an example of the automobile engine 10, the mist water supply mechanism 20, and an electrical system, and FIG. 5 is a diagram showing an example of the water injection nozzle 23 (23a to 23c). FIG. 6 is a configuration diagram of the automobile engine 10 shown as an example, and FIG. 7 is a side view of the accelerator work unit 26 shown as an example. FIG. 8 is a front view of the accelerator work unit 26.

The automobile 11 is equipped with a mist water supply mechanism 20 and a gasoline refueling mechanism in addition to the automobile engine 10. The mist water supply mechanism 20 includes a water tank 17, a water level sensor 21, a water supply pump unit 16, a water supply amount control unit 22, a water injection nozzle 23 (mist nozzle), an engine rotation speed measurement unit (not shown), and an accelerator work unit 24. It is formed.

The water level sensor 21 is installed inside the water tank 17, and is connected to an ECU 26 (electronic control unit) via a signal line 45 (interface). The water level sensor 21 measures the water level inside the water tank 17 and transmits the measured water level to the ECU 26. The water level of the water tank 17 measured by the water level sensor 21 is displayed on a water level gauge (not shown) installed on the meter panel 27. You can tell how much water is left by looking at the water level gauge.

The water supply pump unit 16 includes a water supply pump 28, a pressure regulator 29 (pressure regulator), and a strainer 30. The water pump unit 16 supplies water (tap water or pure water) from the water tank 17 to the water supply amount control unit 22 (water supply electromagnetic valve 32) using a water supply pump 28. The water supply pump 28 is arranged downstream of the water tank 17 and is connected to the water tank 17 via a water supply pipe 25 (water supply rubber hose or copper pipe). The control unit of the water supply pump 28 is connected to the ECU 26 via a signal line 45 (interface), and the ECU 26 controls starting/stopping of the water supply pump 28 and pump output. The control unit of the water supply pump 28 adjusts the pump output of the water supply pump 28 according to a control signal from the ECU 26 while the automobile engine 10 is being driven.

The control unit of the water supply pump 28 supplies water (tap water or pure water) stored in the water tank 17 to the water supply amount control unit 22 (water injection solenoid valve 32) in accordance with a water supply command (water supply signal) from the ECU 26. The control unit of the water supply pump 28 adjusts the pump output according to a pump output command (pump output signal) from the ECU 26. The control unit of the water supply pump 28 stops the water supply to the water supply amount control unit 22 (water supply electromagnetic valve 32) in accordance with a water supply stop command (water supply stop signal) from the ECU 26.

The regulator 29 is arranged downstream of the water supply pump 28, and is connected to the water supply pump 28 via a water supply pipe 25 (water supply rubber hose or copper pipe), and is also connected to the water tank 17 via a bypass pipe. . The regulator 29 lowers the water pressure of the water supplied by the water supply pump 28 to a constant pressure, and maintains the water pressure constant. The regulator 29 returns excess water to the water tank 17 via the bypass pipe 31.

The strainer 30 is arranged downstream of the regulator 29 and is connected to the regulator 29 via a water supply pipe 25 (water supply rubber hose or copper pipe). The strainer 30 uses a screen or the like to filter out solid foreign matter contained in water whose water pressure is kept constant by the regulator 29, thereby removing the solid foreign matter.

The water supply amount control unit 22 is installed in the front area 12 (engine room) of the automobile 11. The water supply amount control unit 22 is arranged downstream of the water pump unit 16, and is connected to the water pump unit 16 via a water supply pipe 25 (water supply rubber hose or copper pipe). The mist air supply mechanism 20 is connected to the mist air supply mechanism 20 via a pipe (pipe). A plurality of water supply solenoid valves 32 are installed in the water supply amount control unit 22 . The water supply amount control unit 22 is connected to the ECU 26 via a signal line 45 (interface).

In the water supply amount control unit 22, the opening/closing and opening degree of the water supply solenoid valve 32 are controlled by the ECU 26. The water supply amount control unit 22 adjusts the opening degree of the water supply electromagnetic valve 32 according to a control signal from the ECU 26 while the automobile engine 10 is running, and controls the water injection nozzle 23 (mist nozzle) or water injection injector (not shown). Adjust the amount of water supplied to the

The water injection nozzle 23 (mist nozzle) is formed from a first water injection nozzle 23a, a second water injection nozzle 23b, and a third water injection nozzle 23c, and is arranged downstream of an electronically controlled throttle 60, which will be described later. The first to third water injection nozzles 23a to 23c each have a spray surface 33 forming a semicircular arc, as shown in FIG. The spray surface 33 faces into a mist water generating pipe 57, which will be described later. A plurality of spray ports 34 are perforated (formed) in the spray surface 33 and arranged in a straight line in the circumferential direction.

The first to third water injection nozzles 23a to 23c spray mist-like water into the mist water generating pipe 57 from the spray port 34 of the spray surface 33. Note that the number of water injection nozzles 23 (mist nozzles) may be one. When there is one water injection nozzle 23, the average particle diameter of the mist water sprayed from the water injection nozzle 23 is in the range of 30 to 75 μm. Further, although not shown, a water injector can be used in place of the first to third water injection nozzles 23a to 23c. The water injector is installed in the cylinder 46 of the engine 10 and supplies mist-like water directly to the combustion chamber 46a of the cylinder 46.

The engine rotation speed measurement unit is installed in the front area 12 (engine room). The engine rotation speed measurement unit is connected to the ECU 26 via a signal line 45 (interface). The engine rotation speed measurement unit includes a rotation speed sensor 19 that measures the engine rotation speed of the engine 10 that is being driven, and a tachometer (not shown) that displays the engine rotation speed measured by the rotation speed sensor 19.

The engine rotation speed measurement unit transmits the engine rotation speed measured by the rotation speed sensor 19 to the ECU 26. The engine speed measured by the rotation speed sensor 19 is displayed on a tachometer installed on the meter panel 27. You can find out the engine speed by looking at the tachometer.

The accelerator work unit 24 includes an accelerator pedal 35, an accelerator pedal holder 36, and an accelerator opening sensor 37 connected to the accelerator pedal 35. The accelerator opening sensor 37 is connected to the ECU 26 via a signal line 45. The accelerator pedal opening sensor 37 continuously measures the opening of the accelerator pedal 35 while the automobile engine 10 is driving, and transmits the measured accelerator opening (°) to the ECU 26 . The ECU 26 determines the amount of gasoline to be injected into the combustion chamber 46a of the cylinder 46 (injection amount) and the amount of mist water to be supplied (sprayed) into the combustion chamber 46a based on the accelerator opening received from the accelerator opening sensor 37. Adjust.

In order to connect the accelerator pedal 35 and the accelerator opening sensor 37 using the accelerator pedal holder 36, the accelerator opening sensor stay (not shown) must be positioned to prevent interference with other devices at the positioned position. After confirming that there is no interference, drill a hole at the installation location (floor surface) of the accelerator opening sensor stay. After temporarily fixing the accelerator opening sensor 37 at the determined position, the accelerator pedal holder 36 is attached to the accelerator pedal.

Next, press the accelerator pedal 35 down to the floor surface, and confirm that the rotation axis of the accelerator opening sensor 37 rotates by 45 degrees or more, and also confirm that the rotation axis operates smoothly. After checking them, fix the accelerator opening sensor stay. After installing the accelerator opening sensor 37, electrical wiring is performed. After completing the electrical wiring, perform the settings. In the setting, the accelerator pedal 35 is depressed and the engine speed is set to 1500 (rpm). While maintaining the engine speed at 1500 (rpm), press the 0-point adjustment button (not shown), and the LED (not shown) adjacent to the 0-point adjustment button lights up to complete the setting (calibration). . After setting, the opening degree of the accelerator opening sensor 37 is set from 0 to 100%. The setting is completed when the accelerator pedal 35 is depressed to 95% of the rotation speed at maximum output and the LED lights up.

The gasoline refueling mechanism includes an exhaust manifold 38 and a muffler 39, a cooling system (water jacket, radiator, water pump, thermostat, cooling fan or electric fan, radiator hose, etc.) (not shown), and an idling adjustment valve (not shown). (not shown), a pressure gauge (not shown), a fuel pump module (not shown), a fuel injector 40, an engine rotation speed measuring unit as described above that forms the mist water supply mechanism, and a pressure gauge as described above that forms the mist water supply mechanism 20. It has an accelerator work unit 24. Although not shown, the automobile 11 includes an electric system (a battery 41, a generator 42, a fuse box 43, a relay coil 44), a drive system, in addition to an automobile engine 10, a mist water supply mechanism 20, and a gasoline refueling mechanism. , equipped with various equipment. The electrical system (battery 41, generator 42, fuse box 43, relay coil 44) is connected to the ECU 26 via a signal line 45.

The cooling system, idling adjustment valve, and pressure gauge are installed in the front area 12 (engine room). A gasoline tank 15 is installed in the rear area 14 (tank room). Although not shown, the gasoline tank 15 is equipped with a check valve, a pressure reducing valve, and a gasoline filling port.

The idling adjustment valve is installed in a pipe (copper pipe) extending between the gasoline tank 15 and the engine 10 in the rear area 14 (tank room). The idling adjustment valve adjusts the idling speed by adjusting the flow rate of gasoline flowing through the pipe while the automobile engine 10 is being driven. The idling adjustment valve is connected to the ECU 26 via a signal line (not shown), and its opening/closing and opening degree are controlled by the ECU 26.

The ECU 26 uses an idling adjustment valve to control the idling speed, thereby improving fuel efficiency, maintaining a stable idling state, and preventing engine stalling by lowering the idling speed when the engine 10 is idling. In the idling rotation speed control, starting correction at the time of starting, engine water temperature correction, correction when the air conditioner is activated, D range correction for AT vehicles, etc. are performed.

The pressure gauge is disposed downstream of the idling adjustment valve and installed in a pipe extending between the gasoline tank 15 and the engine 10. The pressure gauge measures the oil pressure of gasoline flowing through the pipe. The pressure gauge is connected to the ECU 26 via a signal line (not shown), and transmits the gasoline supply oil pressure measured while the automobile engine 10 is running to the ECU 26.

The fuel pump module is installed inside the gasoline tank 15 (fuel tank). The fuel pump module includes a fuel pump, fuel filter, fuel sender gauge, pressure regulator, charcoal canister, etc. The fuel pump module is connected to the ECU 26 via a signal line (not shown), and its start/stop and output are controlled by the ECU 26. In the fuel pump module, gasoline (fuel) sucked up by the fuel pump is sent under pressure to the fuel injector 40 via a pressure regulator and a fuel filter.

The fuel injector 40 controls the amount of gasoline (fuel) injected into the combustion chamber 46a of each cylinder 46 according to a control signal from the ECU 26 while the automobile engine 10 is running (the amount of gasoline supplied to the combustion chamber 46a of each cylinder 46). ) adjust. Gasoline supplied at high pressure from the fuel pump flows through the filter and is sent to the injection part of the fuel injector 40, where the gasoline is atomized at the valve part at the tip of the injector 40, and the atomized gasoline enters the combustion chamber of the cylinder 46. 46a.

The fuel injection amount of the fuel injector 40 is controlled by the ECU 26. The ECU 26 analyzes measurement information transmitted from various sensors installed in the automobile 11, sends an injection signal to the fuel injector 40, and the injector 40 injects gasoline (fuel) in response to the signal. The optimal fuel injection amount is determined based on various information such as valve timing, ignition timing, water temperature, throttle opening, air temperature and intake amount, depending on the driving situation.

When the water supply pump unit 16 starts, the water (tap water or pure water) stored in the water tank 17 flows from the water tank 17 to the water supply pump 28 through the water supply pipe 25, and flows through the water supply pipe 25 by the water supply pump 28. The water flows into the water supply amount control unit 22 (water supply electromagnetic valve 32) through the water supply pipe 25, and is supplied from the water supply amount control unit 22 to the water injection nozzle 23 (mist nozzle) installed in the mist water generation pipe 57. be done. The water is changed into atomized water by the water injection nozzle 23, and the atomized water is sprayed (water supplied) from the water injection nozzle 23 into the atomized water generating pipe 57.

A 6-cylinder V-type engine is used as the automobile engine 10, but a 4-cylinder V-type engine, an 8-cylinder V-type engine, a 12-cylinder V-type engine, a 4-cylinder in-line engine, a 6-cylinder in-line engine, and a 4-cylinder horizontal engine are used. It is also possible to use an opposed engine, a 6-cylinder horizontally opposed engine. As shown in FIG. 6, the automobile engine 10 includes a cylinder 46 (cylinder) having a predetermined volume, a piston 47, and a spark plug 48 (spark plug).

The automobile engine 10 is equipped with a CVTC valve 49 (Continuous Valve Timing Control) that optimizes the intake system, and an ignition coil 50 that applies high voltage (20,000 to 30,000 volts) to the spark plug 48. CVTC valve 49 is connected to ECU 26 via signal line 45. A control signal is sent from the ECU 26 to the CVTC valve 49 while the automobile engine 10 is being driven, and the CVTC valve 49 optimizes the intake system in accordance with the control signal. Ignition coil 50 is connected to ECU 26 via signal line 45. An ignition timing control signal is transmitted to the ignition coil 50 from the ECU 26 while the automobile engine 10 is being driven, and a high voltage is applied to the spark plug 48 at the ignition timing in accordance with the control signal.

A crank angle sensor 51, a POS sensor 52, a temperature sensor 53, and a knock sensor 54 are installed in the automobile engine 10. A front O2 sensor 56 and a rear O2 sensor 56 are installed at the exhaust port 55 of the automobile engine 10. The exhaust port 55 is connected to a muffler 39 via an exhaust manifold 38.

Crank angle sensor 51 is connected to ECU 26 via signal line 45. The crank angle sensor 51 continuously detects the reference position and rotation angle of the crankshaft and the rotation speed of the engine 10 while the automobile engine 10 is driving. The rotation speed is transmitted to the ECU 26. The ECU 26 optimally maintains the rotation angle and the rotation speed of the engine 10 based on the reference position and rotation angle of the crankshaft and the rotation speed of the engine 10 received from the crank angle sensor 51.

The POS sensor 52 is connected to the ECU 26 via a signal line 45. The POS sensor 52 continuously detects the crank position (angle) (crankshaft position) while the automobile engine 10 is driving, and transmits the detected crank position (angle) to the ECU 26. The ECU 26 optimally maintains the crank position (corner) based on the crank position (corner) received from the POS sensor 52.

Temperature sensor 53 is connected to ECU 26 via signal line 45. The temperature sensor 53 continuously detects the temperature of the combustion chamber 46a of the cylinder 46 while the automobile engine 10 is driving, and transmits the detected temperature of the combustion chamber 46a to the ECU 26. The ECU 26 optimally maintains the combustion chamber temperature based on the temperature of the combustion chamber 46a received from the temperature sensor 53.

The front O2 sensor 56 and the rear O2 sensor 56 are connected to the ECU 26 via a signal line 45. The front O2 sensor 56 and the rear O2 sensor 56 continuously measure the oxygen concentration of the exhaust gas flowing through the exhaust port 55 while the automobile engine 10 is running, and transmit the measured oxygen concentration of the exhaust gas to the ECU 26. The ECU 26 sends a control signal to a catalyst unit (not shown) based on the oxygen concentration of the exhaust gas received from the front O2 sensor 56 and the rear O2 sensor 56, and uses the catalyst unit to maintain the oxygen concentration of the exhaust gas at an optimal level. do.

The knock sensor 54 is connected to the ECU 26 via a signal line 45. The knock sensor 54 continuously detects the occurrence of knocking while the automobile engine 10 is driving, and transmits a detected knocking occurrence signal to the ECU 26. The ECU 26 stops (prevents) knocking based on the knocking occurrence signal received from the knock sensor 54.

A spark plug 48, a fuel injector 40, and an exhaust valve (not shown) are attached to the cylinder head of the cylinder 46. A combustion chamber 46a is formed in the cylinder head of the cylinder 46. The spark plug 48 is connected to the battery 41 via a signal line 45 and to the ECU 26 via the signal line 45, and generates a spark according to an ignition signal from the ECU 26. The fuel injector 40 is connected to the ECU 26 via a signal line 45. An air/heat ratio control signal is transmitted to the fuel injector 40 from the ECU 26 while the automobile engine 10 is being driven.

A connecting rod (not shown) is connected to the piston 47 via a piston pin (not shown). The piston 47 reciprocates in the combustion chamber 46a of the cylinder 46, moves up the combustion chamber 46a of the cylinder 46 from the bottom dead center toward the top dead center, and after reaching the top dead center, moves from the top dead center to the bottom dead center. It descends towards the bottom and reaches bottom dead center. At the timing when the piston 47 reaches the top dead center of the combustion chamber 46a of the cylinder 46, the ignition plug 48 ignites the mixture (gasoline) in the combustion chamber 46a.

Although the automobile engine 10 shown in FIG. 6 shows direct injection fuel injection in which gasoline is directly injected into the combustion chamber 46a of the cylinder 46, gasoline is injected from the fuel injector 40 into the intake manifold, and air and gasoline are injected into the combustion chamber 46a of the cylinder 46. An injection type fuel injection may be used in which a mixture of the following is supplied to the combustion chamber 46a of the cylinder 46. In this case, the fuel injector 40 injects an injection amount of gasoline (fuel) into the intake manifold according to a control signal from the ECU 26 while the automobile engine 10 is running (amount of gasoline supplied to the combustion chamber 46a of each cylinder 46). Adjust. Gasoline supplied at high pressure from the fuel pump flows through a filter and is sent to the injection part of the injector 40, where the gasoline is atomized at the valve part at the tip of the injector 40, and the atomized gasoline is injected into the intake manifold. Ru.

The mist water generating pipe 57 is provided with an air filter 58, an air flow meter 59, an electronically controlled throttle 60, and water injection nozzles 23 (23a to 23c). The air filter 58 is disposed on the most upstream side of the mist water generation pipe 57 and removes impurities contained in the air flowing into the mist water production pipe 57 (flowing through the mist water production pipe 57). Air flow meter 59 is arranged downstream of air filter 58 and connected to ECU 26 via signal line 45. The air flow meter 59 continuously measures the air flow rate of the air flowing through the atomized water generating pipe 57 while the automobile engine 10 is being driven, and transmits the measured air flow rate to the ECU 26 .

The air flow meter 59 includes an intake air temperature sensor (not shown). The intake air temperature sensor is connected to the ECU 26 via a signal line 45. The intake air temperature sensor continuously measures the intake air temperature of the air flowing through the atomized water generating pipe 57 while the automobile engine 10 is being driven, and transmits the measured intake air temperature to the ECU 26 . The ECU 26 adjusts the electronically controlled throttle 60 (throttle motor) based on the air flow rate received from the air flow meter 59 and the intake air temperature received from the intake air temperature sensor, and adjusts the air flow rate of the air flowing through the mist water generation pipe 57. optimally retained.

The electronically controlled throttle 60 is arranged downstream of the air flow meter 59 and includes a throttle 61 (throttle valve), a throttle sensor (not shown), and a throttle motor (not shown). The electronically controlled throttle 60 controls the throttle 61 by receiving an output request based on the amount of depression of the accelerator pedal 35 (accelerator opening) as an electrical signal. The throttle 61 is installed in the mist water generation pipe 57 and changes the flow path cross-sectional area of the mist water production pipe 57, thereby changing the supply flow rate of air flowing through the mist water production pipe 57.

The throttle sensor is connected to the ECU 26 via a signal line 45, measures the opening degree of the throttle 60 while the automobile engine 10 is being driven, and transmits the measured throttle opening degree to the ECU 26. A DC motor or a stepping motor is used as the throttle motor. The throttle motor is connected to the ECU 26 via a signal line 45, and adjusts the opening degree of the throttle 60 according to a control signal from the ECU 26, and adjusts the flow rate of air flowing through the mist water generating pipe 57.

The ECU 26 calculates the target opening of the throttle 60 from the information of the accelerator opening sensor 37 of the accelerator work unit 24, compares it with the actual opening of the throttle 60 to obtain an opening deviation, and sends the signal to the throttle motor. Determine the control amount. Further, the ECU 26 performs cruise control to control the engine output so that the vehicle travels at a constant speed while the accelerator pedal 35 is released. Cruise control reduces engine output to prevent drive wheel slippage. Furthermore, when the vehicle speed reaches a constant speed, the ECU 26 closes the throttle valve to lower the engine output and performs maximum speed limit control to suppress the vehicle speed.

The air that has flowed into the mist water generation pipe 57 passes through an air filter 58 to remove impurities, and after adjusting the amount of air supplied by a throttle 60, the air flows downstream of the mist water production pipe 57. flow towards. Atomized water is sprayed into the atomized water generation tube 57 from the water injection nozzles 23 (first to third water injection nozzles 23a to 23c) installed downstream of the atomized water generation tube 57, and the atomized water and The mixture with air is supplied to the combustion chamber 46a of each cylinder 46.

Although not shown, solenoid valves are installed in the first mist nozzle 23a, the second mist nozzle 23b, and the third mist nozzle 23c, and when the solenoid valves are open, mist water is released from the mist nozzles 23a to 23c. When the solenoid valve is closed, the atomized water is not sprayed. These solenoid valves are connected to the ECU 26 via a signal line 45. When the solenoid valve of the first mist nozzle 23a is open, the solenoid valves of the second and third mist nozzles 23b and 23c are closed, and when the solenoid valve of the second mist nozzle 23b is open, the solenoid valves of the first and third mist nozzles 23b and 23c are closed. The solenoid valves of the three mist nozzles 23a and 23c are closed. When the solenoid valve of the third mist nozzle 23c is open, the solenoid valves of the first and second mist nozzles 23a and 23b are closed.

The average particle diameter of the mist water sprayed from the first mist nozzle 23a is in the range of 30 to 45 μm, and the average particle diameter of the mist water sprayed from the second mist nozzle 23b is in the range of 46 to 60 μm. be. The average particle diameter of the mist water sprayed from the third mist nozzle 23c is in the range of 61 to 75 μm. In the automobile engine 10, as the engine speed (rpm) increases, the average particle diameter (μm) of the mist water sprayed into the mist water generating pipe 57 increases, and the engine speed (rpm) decreases. Accordingly, the average particle diameter (μm) of the mist water sprayed into the inside of the mist water generation pipe 57 is reduced.

When the rotational speed of the automobile engine 10 is 1000 rpm or more and less than 2400 rpm, the solenoid valve of the first water injection nozzle 23a is opened, and the solenoid valves of the second and third water injection nozzles 23b and 23c are closed, so that the first water Atomized water having an average particle diameter of 30 to 45 μm is sprayed from the spray nozzle 23a. When the rotational speed of the automobile engine 10 is 2400 rpm or more and less than 4400 rpm, the solenoid valve of the second water injection nozzle 23b is opened, and the solenoid valves of the first and third water injection nozzles 23a and 23c are closed, so that the second water Atomized water having an average particle diameter of 46 to 60 μm is sprayed from the spray nozzle 23b. When the rotational speed of the automobile engine 10 is 4400 rpm or more and less than 6400 rpm, the solenoid valve of the third water injection nozzle 23c is opened, and the solenoid valves of the first and second water injection nozzles 23a and 23b are closed, and the third water injection nozzle 23c is opened. Atomized water having an average particle diameter of 61 to 75 μm is sprayed from the spray nozzle 23c.

In the automobile engine 10, the amount of mist water supplied to the combustion chamber 46a increases as the engine speed (rpm) increases when the automobile is traveling on a flat road, traveling uphill, or accelerating. cc/min) (spray amount (cc/min) sprayed into the mist water generating pipe 57 from any one of the first to third water injection nozzles 23a to 23c) increases, and the engine rotation speed (rpm) increases. As the amount of mist water supplied to the combustion chamber 46a decreases (cc/min) (spray sprayed into the mist water generation pipe 57 from any of the first to third water injection nozzles 23a to 23c) volume (cc/min)) decreases.

In the automobile engine 10, water is supplied from the mist water supply mechanism 20 to the combustion chamber 46a in the form of mist as the engine speed (rpm) increases when the automobile is running on a flat road, when running uphill, or when accelerating. The average particle diameter (μm) of water (the average particle diameter (μm) of the mist water sprayed into the mist water generation pipe 57 from any of the first to third water injection nozzles 23a to 23c) increases. , as the engine speed (rpm) decreases, the average particle diameter (μm) of the mist water supplied from the mist water supply mechanism 20 to the combustion chamber mist water generation pipe 57 (of the first to third water injection nozzles 23a to 23c) The average particle diameter (μm) of the mist water sprayed into the mist water generating pipe 57 decreases from either of them.

The amount of mist water supplied (spray amount) to the combustion chamber 46a of one cylinder 46 when the rotational speed of the automobile engine 10 is 1000 rpm or more and less than 1300 rpm is 22.4 (cc/min) or more and 28.0 (cc/min) or more. The average particle diameter (μm) of the mist water is in the range of 30 to 45 μm. The amount of mist water supplied (spray amount) to the combustion chamber 46a of one cylinder 46 at a rotation speed of 1300 rpm or more and less than 1500 rpm of the automobile engine 10 is 28.0 (cc/min) or more and 32.5 (cc/min) or more. The average particle diameter (μm) of the mist water is in the range of 30 to 45 μm.

The amount of mist water (spray amount) supplied to the combustion chamber 46a of one cylinder 46 at a rotational speed of 1500 rpm or more and less than 2400 rpm of the automobile engine 10 is 32.5 (cc/min) or more and 53.8 (cc/min) or more. The average particle diameter (μm) of the mist water is in the range of 30 to 45 μm. The amount of mist water supplied (spray amount) to the combustion chamber 46a of one cylinder 46 when the rotational speed of the automobile engine 10 is 2400 rpm or more and less than 3200 rpm is 53.8 (cc/min) or more and 72.8 (cc/min) or more. The average particle diameter (μm) of the mist water is in the range of 46 to 60 μm. The amount of atomized water (spray amount) supplied to the combustion chamber 46a of one cylinder 46 at a rotational speed of 3200 rpm or more and less than 4000 rpm of the automobile engine 10 is 72.8 (cc/min) or more and 89.6 (cc/min) or more. The average particle diameter (μm) of the mist water is in the range of 46 to 60 μm.

The amount of mist water supplied (spray amount) to the combustion chamber 46a of one cylinder 46 when the rotational speed of the automobile engine 10 is 4000 rpm or more and less than 4400 rpm is 89.6 (cc/min) or more and 98.6 (cc/min) or more. The average particle diameter (μm) of the mist water is in the range of 46 to 60 μm. The amount of mist water supplied (spray amount) to the combustion chamber 46a of one cylinder 46 when the rotational speed of the automobile engine 10 is 4400 rpm or more and less than 4800 rpm is 98.6 (cc/min) or more and 109.8 (cc/min) or more. The average particle diameter (μm) of the mist water is in the range of 61 to 75 μm.

The amount of mist water supplied (spray amount) to the combustion chamber 46a of one cylinder 46 when the rotational speed of the automobile engine 10 is 4800 rpm or more and less than 5200 rpm is 109.8 (cc/min) or more and 113.1 (cc/min). The average particle diameter (μm) of the mist water is in the range of 61 to 75 μm. The amount of mist water supplied (spray amount) to the combustion chamber 46a of one cylinder 46 when the rotational speed of the automobile engine 10 is 5200 rpm or more and less than 5600 rpm is 113.1 (cc/min) or more and 117.1 (cc/min). The average particle diameter (μm) of the mist water is in the range of 61 to 75 μm.

The amount of mist water supplied (spray amount) to the combustion chamber 46a of one cylinder 46 when the rotational speed of the automobile engine 10 is 5,600 rpm or more and less than 6,400 rpm is 117.1 (cc/min) or more and 120.0 (cc/min) or more. The average particle diameter (μm) of the mist water is in the range of 61 to 75 μm. In the automobile engine 10, when the number of revolutions (rpm) reaches 1000 (rpm) or more, mist water is supplied from the mist water supply mechanism 20 to the combustion chamber 46a of the cylinder 46, and the number of revolutions (rpm) increases. When the speed is less than 1000 (rpm), atomized water is not supplied to the combustion chamber 46a of the cylinder 46.

When the automobile engine 10 is operating and the engine 10 is idling, the piston 47 starts to descend from the top dead center of the cylinder 46 toward the bottom dead center, and the piston 47 moves from the top dead center of the cylinder 46 to the bottom dead center. In the intake process up to this point, the fuel pump module injects gasoline in an amount corresponding to the amount signal into the fuel injector according to the gasoline amount signal sent from the ECU 26 (the gasoline amount signal corresponding to the accelerator opening). 40.

While the automobile engine 10 is being driven and the engine 10 is idling, if the rotational speed of the engine 10 is 400 rpm or more and less than 1000 rpm, the ECU 26 closes the solenoid valves of the first to third water injection nozzles 23a to 23c. The supply of mist water from the water injection nozzles 23a to 23c is stopped. When the automobile 11 starts running and the rotational speed of the automobile engine 10 reaches 1000 rpm or more, the ECU 26 opens any of the electromagnetic valves of the first to third water injection nozzles 23a to 23c, and the water injection nozzle is activated. The supply of mist water is started from any one of 23a to 23c.

During the intake stroke from when the piston 47 starts descending from the top dead center of the cylinder 46 toward the bottom dead center until the piston 47 reaches the bottom dead center from the top dead center of the cylinder 46, the water transmitted from the ECU 26 is The water supply amount control unit 16 adjusts the opening degree of the water injection solenoid valve 32 according to the water supply amount signal (the amount of water supplied corresponding to the rotation speed of the engine 10), and the amount of water corresponding to the water supply amount signal is supplied. Water is supplied from the amount control unit 16 to any one of the first to third water injection nozzles 23a to 23c, and the set water supply amount of water is turned into a mist of water by one of the water injection nozzles 23a to 23c. Water (a mixture containing air) is sprayed (water supplied) into the mist water generating pipe 57 from any of the first to third water injection nozzles 23a to 23c, and the mist water (a mixture containing air) is sprayed into each cylinder. Water is supplied to the 46 combustion chambers 46a.

In the intake process, according to the gasoline refueling amount signal (gasoline refueling amount signal corresponding to the accelerator opening degree) transmitted from the ECU 26, the fuel pump module pressure-feeds gasoline in an amount corresponding to the refueling amount signal to the fuel injector 40, Gasoline of a refueling amount corresponding to the refueling amount signal is directly injected from the fuel injector 40 into the combustion chamber 46a of the cylinder 46. In the intake process, air (or a mixture of gasoline and air) is supplied from the intake valve to the combustion chamber 46a of the cylinder 46, and at the same time (gasoline is supplied from the fuel injector 14 to the combustion chamber 46a of the cylinder 46). At the same time), mist water is supplied from the mist water supply mechanism 20 to the mist water generation pipe 57 (combustion chamber 46a of the cylinder 46).

The mist-like mist water (mixture containing air) is sprayed (water supplied) into the mist water generating pipe 57 from the spray ports 34 of the spray surface 33 forming a semicircular arc. In the automobile engine 10, the first to third water injection nozzles 23a to 23c have a spray surface 33 that draws a semicircular arc toward the inside of the mist water generating pipe 57, and spray mist water. A plurality of spray ports 34 are perforated in the spray surface 33, and a mist of water is sprayed from the plurality of spray ports 34 of the spray surface 33 forming a semicircular arc. It is possible to evenly spray the mist-like water to the combustion chambers 46a of all the cylinders 46, and it is possible to evenly supply the mist-like water to the combustion chambers 46a of all the cylinders 46.

After a predetermined amount of gasoline is refueled (supplied) to the combustion chamber 46a of each cylinder 46 and a predetermined amount of water mist is supplied (supplied) to the combustion chamber 46a of each cylinder 46, the piston 47 moves into the cylinder 46. In the compression process rising from the bottom dead center of the cylinder 46 toward the top dead center, gasoline (including air) supplied to the combustion chamber 46a of the cylinder 46 and atomized water (including air) supplied to the combustion chamber 46a of the cylinder 46 (mixture containing) is compressed. The pressure and temperature of the compressed gasoline-containing mixture and the atomized water (air-containing mixture) increase.

In the explosion-expansion process in which the piston 47 rises to the top dead center of the cylinder 46 and compression is completed, the ECU 26 applies a high voltage to the ignition plug 48 using the ignition coil 58, causing the ignition plug 48 to generate a spark. In the explosion and expansion process, the gasoline-containing mixture in the combustion chamber 46a, which has been compressed to a predetermined compression ratio by the piston 47, is ignited by a spark from the spark plug 48.

When an air-fuel mixture containing gasoline is ignited, the air-fuel mixture burns at a high temperature, and the heat of combustion of the air-fuel mixture instantly vaporizes the mist of water, causing a steam explosion and combustion of the air-fuel mixture. The piston 47 is pushed down by the vaporization (steam explosion) of the mist water, and the crankshaft rotates. In an automobile engine 10, the combustion energy of a mixture containing gasoline and the steam energy of vaporized (steam explosion) atomized water are converted into power (rotational force).

In the exhaust process during which the piston 47 starts rising again from the bottom dead center of the cylinder 46 toward the top dead center and the piston 47 reaches the top dead center from the bottom dead center of the cylinder 46, the exhaust valve opens. Combustion gas (exhaust gas) flows into the exhaust port 55 and is exhausted to the outside of the cylinder 46 . Combustion gas (exhaust gas) is exhausted to the outside from the exhaust port 55 through the muffler 39. When the exhaust stroke ends, the piston 47 again descends from the top dead center to the bottom dead center and returns to the intake stroke (4 cycles).

In the automobile engine 10, gasoline is supplied from the fuel injector 40 to the combustion chamber 46a of the cylinder 46, and a mist of water is supplied from any one of the first to third water injection nozzles 23a to 23c to the combustion chamber 46 of the cylinder 46. Water is supplied (sprayed) to the chamber 46a, and the mixture containing gasoline in the combustion chamber 46a, which is compressed to a predetermined compression ratio by the piston 47, is ignited by the spark plug 48, and while the mixture is combusted, mist is generated by the combustion heat of the mixture. The combustion energy of the air-fuel mixture and the steam energy of the vaporized (steam explosion) atomized water are converted into power (rotational force), which enables the combustion of air-fuel mixtures containing gasoline. Along with the energy, the steam energy of vaporized (steam explosion) atomized water can be converted into power (rotational power) for the engine 10, and a predetermined engine output can be obtained from the combustion energy and steam energy. The automobile 11 can be driven by the combustion energy of the mixture containing gasoline and the steam energy of the atomized water.

FIG. 9 is a diagram showing an example of the correlation between the engine speed of the automobile engine 10 and the amount of mist water supplied. FIG. 9 shows the correlation between the engine rotational speed and the water supply amount when the automobile 11 is traveling on a flat road, traveling uphill, or accelerating.

For example, the ECU 26 increases (increases) the engine speed (rpm) from 1500 rpm to less than 2400 rpm by depressing the accelerator pedal 35 when the vehicle 11 is traveling on a flat road, traveling uphill, or accelerating. ), the water supply amount (spray amount) is in the range of 32.5 (cc/min) or more and less than 53.8 (cc/min) and the atomized water with an average particle diameter in the range of 30 to 45 μm is first The water is sprayed (water supplied) from the water injection nozzle 23a into the mist water generating pipe 57, and the water supply amount (spray amount) is in the range of 32.5 (cc/min) or more and less than 53.8 (cc/min). Atomized water having an average particle diameter in the range of 30 to 45 μm is supplied to the combustion chamber 46a of one cylinder 46 (first water supply amount increasing means), (average particle diameter increasing means).

The ECU 26 increases the engine rotation speed (rpm) from 1500 rpm or more but less than 2400 rpm to 2400 rpm or more and less than 3200 rpm by further depressing the accelerator pedal 35 when traveling on a flat road, uphill, or accelerating. rise), the second water injection nozzle 23b sprays atomized water with an average particle size of 46 to 60 μm in the range of 53.8 (cc/min) to less than 72.8 (cc/min). Atomized water (water supply) is sprayed into the production pipe 57, and atomized water with an average particle diameter of 46 to 60 μm in the range of 53.8 (cc/min) to less than 72.8 (cc/min) is delivered into one cylinder. Water is supplied to the combustion chamber 46a of No. 46 (first water supply amount increasing means), (average particle size increasing means).

The ECU 26 increases the engine rotation speed (rpm) from 2400 rpm or more and less than 3200 rpm to 4800 rpm or more and less than 5200 rpm by further depressing the accelerator pedal 35 when driving on a flat road, uphill, or accelerating. (rise), atomized water with an average particle size of 61 to 75 μm in the range of 109.8 (cc/min) to less than 113.1 (cc/min) is sprayed from the third water injection nozzle 23c. The inside of the water generation pipe 57 is sprayed (water supplied), and atomized water with an average particle diameter of 61 to 75 μm is in the range of 109.8 (cc/min) or more and less than 113.1 (cc/min). Water is supplied to the combustion chamber 46a of the cylinder 46 (first water supply amount increasing means), (average particle size increasing means).

In the automobile engine 10, when running on a flat road, uphill, or accelerating, the inside of the mist water generating pipe 57 (combustion chamber 46a) increases as the engine speed (rpm) increases. As the amount of mist water supplied (cc/min) increases and the engine speed (rpm) increases, the average of the mist water sprayed into the inside of the mist water generating pipe 57 (combustion chamber 46a) increases. As the particle size (μm) increases, the vehicle 11 maintains its speed or the power of the engine 10 increases and the vehicle 11 accelerates.

The automobile engine 10 increases the amount of mist water (cc) supplied to the combustion chamber 46a of the cylinder 46 as the engine speed (rpm) increases. It is possible to increase the steam energy of vaporized atomized water, increase the engine output (kW) as the engine rotation speed (rpm) increases, and smoothly operate the engine 10 in the low speed rotation range. It is possible to shift from the medium speed rotation range to the high speed rotation range, and from the medium speed rotation range to the high speed rotation range.

For example, as the engine speed increases from 1,500 rpm to less than 2,400 rpm, the amount of mist water supplied into the mist water generating pipe 57 (combustion chamber 46a) may be set to 32.5 (cc/min) or more (53 cc/min) or more. By increasing the average particle size of the atomized water to less than .8 (cc/min) and making the average particle diameter of the atomized water in the range of 30 to 45 μm, the vapor of the atomized water is evaporated as the engine rotation speed (rpm) increases. Energy can be increased, engine output (kW) can be increased as the engine speed (rpm) increases, and the engine 10 can be smoothly operated from a low speed rotation range to a medium speed rotation range (1500 rpm or more and less than 2400 rpm). can be moved to.

Further, as the engine speed increases from 2400 rpm or more and less than 3200 rpm to 4800 rpm or more and less than 5200 rpm, the amount of mist water supplied into the mist water generation pipe 57 (combustion chamber 46a) is increased to 109.8 (cc). By increasing the average particle diameter of the atomized water to a range of 61 to 75 μm, vaporization was achieved as the engine rotational speed (rpm) increased. The steam energy of the mist water can be increased, and the engine output (kW) can be increased as the engine speed (rpm) increases, and the engine 10 can be smoothly moved from the medium speed rotation range to the high speed rotation range ( 4,800 rpm or more and less than 5,200 rpm).

The ECU 26 adjusts the engine speed (by loosening the accelerator pedal 35 when driving on a flat road, driving uphill, or decelerating (when using cruise control or reducing engine output after reaching a constant vehicle speed). rpm) decreases (descends) from 5,600 rpm or more and less than 6,400 rpm to 4,800 rpm or more and less than 5,200 rpm, the average particle diameter is in the range of 109.8 (cc/min) or more and less than 113.1 (cc/min) and 61 to 75 μm. mist water is sprayed (water supplied) into the mist water generation pipe 57 from the third water injection nozzle 23c, and the mist water is in the range of 109.8 (cc/min) or more and less than 113.1 (cc/min). Atomized water having an average particle diameter of 61 to 75 μm is supplied to the combustion chamber 46a of one cylinder 46 (water supply amount reducing means) (average particle diameter reducing means).

The ECU 26 reduces the engine rotation speed (rpm) from 4800 rpm or more and less than 5200 rpm to 2400 rpm or more and less than 3200 rpm by further loosening the accelerator pedal 35 when traveling on a flat road, uphill, or accelerating. ), the second water injection nozzle 23b sprays atomized water with an average particle diameter of 46 to 60 μm in the range of 53.8 (cc/min) to less than 72.8 (cc/min). Atomized water (water supply) is sprayed into the production pipe 57, and atomized water with an average particle diameter of 46 to 60 μm in the range of 53.8 (cc/min) to less than 72.8 (cc/min) is delivered into one cylinder. Water is supplied to the combustion chamber 46a of No. 46 (water supply amount reduction/increase means), (average particle size reduction means).

The ECU 26 reduces the engine rotation speed (rpm) from 2400 rpm or more and less than 3200 rpm to 1500 rpm or more and less than 2400 rpm by further loosening the accelerator pedal 35 when traveling on a flat road, uphill, or accelerating. (down), the water supply amount (spray amount) is in the range of 32.5 (cc/min) or more and less than 53.8 (cc/min), and the atomized water with an average particle size in the range of 30 to 45 μm is applied. 1. Spray (water supply) from the water injection nozzle 23a into the atomized water generation pipe 57 to produce particles with an average particle size of 30 to 45 μm in the range of 32.5 (cc/min) or more and less than 53.8 (cc/min). (means for reducing the amount of water supplied) and (means for reducing the average particle size).

In the automobile engine 10, when running on a flat road, uphill, or accelerating, as the engine speed (rpm) decreases, the inside of the mist water generating pipe 57 (combustion chamber 46a) As the amount of mist water supplied (cc/min) decreases and the engine speed (rpm) decreases, the average of the mist water sprayed into the inside of the mist water generation pipe 57 (combustion chamber 46a) decreases. Since the particle size (μm) decreases, the output of the engine 10 decreases and the speed of the vehicle 11 gradually decreases.

The automobile engine 10 can reduce the engine speed (rpm) by reducing the amount (cc) of mist water supplied to the combustion chamber 46a of the cylinder 46 as the engine speed (rpm) decreases. As a result, the steam energy of vaporized mist water can be reduced, and the engine output (kW) can be reduced as the engine speed (rpm) decreases, and the engine 10 can be smoothly operated in a high speed rotation range. It is possible to shift from the medium speed rotation range to the medium speed rotation range, and from the medium speed rotation range to the low speed rotation range.

For example, as the engine speed decreases from 4,800 rpm or more and less than 5,200 rpm to 2,400 rpm or more and less than 3,200 rpm, the amount of mist water supplied into the mist water generating pipe 57 (combustion chamber 46a) is reduced to 53.8 (cc). By reducing the average particle size of the atomized water to a range of 46 to 60 μm, vaporization was achieved as the engine speed (rpm) decreased. The steam energy of the mist water can be reduced, and the engine output (kW) can be reduced as the engine speed (rpm) decreases, and the engine 10 can be smoothly moved from the high speed rotation range to the medium speed rotation range ( 2400 rpm or more and less than 3200 rpm).

Further, as the engine speed decreases from 2400 rpm or more and less than 3200 rpm to 1500 rpm or more and less than 2400 rpm, the amount of mist water supplied into the mist water generation pipe 57 (combustion chamber 46a) is reduced to 32.5 (cc). By reducing the average particle size of the atomized water to a range of 30 to 45 μm, vaporization was achieved as the engine speed (rpm) decreased. The steam energy of the mist water can be reduced, the engine output (kW) can be reduced as the engine speed (rpm) decreases, and the engine 10 can be smoothly moved from the medium speed rotation range to the low speed rotation range ( 1500 rpm or more and less than 2400 rpm).

The ECU 26 minimizes the amount of mist water supplied (cc/min) from the mist water supply mechanism 20 to the combustion chamber 46a of the cylinder 46 when the vehicle 11 is braking (during braking). Amount minimization means), the average particle diameter (μm) of the mist water supplied from the mist water supply mechanism 20 to the combustion chamber 46a is minimized (average particle diameter minimization means). For example, when the automobile 11 applies the brakes while traveling on a flat road, a brake signal indicating that the brakes have been applied while the automobile 11 is traveling is transmitted from the brake sensor to the ECU 26, and the ECU 26, which has received the brake signal, It is determined that the brakes are being applied when driving on a flat road. When the ECU 26 determines that the automobile 11 is braking, the ECU 26 determines the amount of mist water (cc /min) to a minimum range of 32.5 (cc/min) to 33.5, and ) The average particle size (μm) of the mist water supplied to the water supply system is set to the minimum range of 30 to 32 μm.

Since the engine rotation speed (rpm) of the automobile engine 10 is low when the automobile 11 is braked, the average particle diameter (μm) of the mist water changes as the engine rotation speed (rpm) increases or decreases. There is no need to increase or decrease the amount of mist water, and it is possible to minimize the amount of mist water supplied (cc/min) into the inside of the mist water generation pipe 57 (combustion chamber 46a) when the brakes are applied, and to reduce the average amount of mist water. By minimizing the particle size (μm), wasteful consumption of steam energy can be prevented and the load on the automobile engine 10 can be reduced.

When the combustion chamber temperature transmitted from the temperature sensor 53 reaches 400° C. while the automobile engine 10 is running, the ECU 26 determines that the combustion temperature in the combustion chamber 46a has reached the upper limit temperature, and one cylinder 46 The amount of mist water (cc/min) supplied to the combustion chambers 46a of the cylinders 46 is increased (second water supply amount increasing means), and the combustion temperature of the combustion chambers 46a of all the cylinders 46 is lowered to below the upper limit temperature (400° C.). Hold. The ECU 26 supplies mist water in an amount corresponding to the engine speed plus 1 to 4 (cc/min) from one of the water injection nozzles 23a to 23c into the mist water generation pipe 57 (combustion chamber). 46a).

For example, if the combustion chamber temperature transmitted from the temperature sensor 53 reaches 400° C. when the engine speed of the automobile engine 10 is 5200 rpm or more and less than 5600 rpm, the ECU 26 opens the solenoid valve of the third water injection nozzle 23c. The solenoid valves of the first and second water injection nozzles 23a and 23b are kept closed, and the water supply amount control unit 22 is made to increase the opening degree of the water injection solenoid valve 32 to reach 113.1 (cc/ 113.1 (cc/min) or more and less than 117.1 (cc/min) + 1 to 4 (cc/min) plus the water supply amount of 1 to 4 (cc/min) to the water supply amount (min) or more and less than 117.1 (cc/min) 4 (cc/min) of mist water is supplied (sprayed) to the combustion chamber 46a of one cylinder 46 from the third water injection nozzle 23c to the inside of the mist water generation pipe 57 (combustion chamber). Atomized water is sprayed into the tube of 46a). Incidentally, mist water having an average particle diameter in the range of 61 to 75 μm is sprayed into the mist water generating pipe 57 from the third water injection nozzle 23c.

Further, if the combustion chamber temperature transmitted from the temperature sensor 53 reaches 400° C. when the engine speed of the automobile engine 10 is 5600 rpm or more and less than 6400 rpm, the ECU 26 opens the solenoid valve of the third water injection nozzle 23c. The solenoid valves of the first and second water injection nozzles 23a and 23b are kept closed, and the water supply amount control unit 22 is made to increase the opening degree of the water injection solenoid valve 32 to 117.1 (cc/ 117.1 (cc/min) or more and less than 120.0 (cc/min) + 1 or more, which is the water supply amount of 1 to 4 (cc/min) added to the water supply amount of 1 to 4 (cc/min) 4 (cc/min) of atomized water is supplied (sprayed) to the combustion chamber 46a of one cylinder 46 from the third water injection nozzle 23c to the inside of the atomized water generating pipe 57 (combustion chamber). 46a) is sprayed with atomized water. Incidentally, atomized water having an average particle diameter in the range of 61 to 75 μm is sprayed from the third water injection nozzle 23c into the atomized water generating pipe 57.

The automobile engine 10 adjusts the amount of mist water supplied to the combustion chamber 46a of one cylinder 46 from 1 to 4 (cc/cc) when the temperature of the combustion chamber 46a of the cylinder 46 reaches 400°C (upper limit temperature). minutes), the increased mist water can cool the combustion chamber 46a, reduce the temperature of the combustion chamber 46a below the upper limit temperature, and prevent the engine 10 from inadvertently overheating. Can be done.

In the automobile engine 10, when the temperature of the combustion chamber 46a of the cylinder 46 exceeds 400° C. (upper limit temperature), the mist water supplied to the combustion chamber 46a evaporates at the moment of water supply, and a mixture of gasoline and air is generated. The timing of the combustion of the air-fuel mixture and the vaporization of the atomized water do not match, and the steam energy cannot be converted into power. At the same time, mist-like water can be vaporized, and the steam energy of the vaporized water can be reliably converted into power (rotational power) for the engine 10 along with the combustion energy of the air-fuel mixture (gasoline). .

FIG. 10 is a diagram showing another example of the correlation between the engine speed of the automobile engine 10 and the amount of mist water supplied. FIG. 10 shows the correlation between the engine speed and the water supply amount when the automobile 11 is traveling downhill.

The output of the automobile engine 10 is proportional to the engine rotation speed and also to the amount of fuel consumed. Therefore, by setting the amount of mist water to be supplied to the fuel injection amount (engine speed), the amount of water to be supplied corresponding to the engine output can be supplied to the combustion chamber 46a of the cylinder 46. However, when the automobile 11 is traveling downhill (with no load applied), the engine speed is high, but the accelerator pedal 35 is not depressed, and the fuel consumption is low. Therefore, there is no need to increase or decrease the amount of mist water supplied by increasing or decreasing the engine speed, and the ECU 2 determines the amount (cc/min) of mist water to be supplied into the inside of the mist water generating pipe 57 (combustion chamber 46a) (water supply amount determining means).

For example, as shown in FIG. 10, when driving downhill, the opening degree (°) of the accelerator pedal 35 is at (1) in FIG. ) becomes (2) in FIG. 9, the ECU 26 controls the water supply corresponding to the opening degree of the accelerator pedal 35 ((2) in FIG. 9) (engine speed is 20%) received from the accelerator opening sensor 37. (cc/min) of mist water is sprayed (water supplied) into the mist water generating pipe 57 (combustion chamber 46a) from any of the water injection nozzles 23a to 23c.

Although the engine speed (rpm) of the automobile engine 10 is high when driving downhill, there is no need to accelerate by depressing the accelerator pedal 35, so it is necessary to increase or decrease the steam energy by increasing or decreasing the engine speed (rpm). By determining the amount of mist water supplied (cc/min) depending on the opening degree of the accelerator pedal 35, the optimum amount of mist water can be misted according to the opening degree of the accelerator pedal 35 when driving downhill. Water can be supplied into the water generation pipe 57 (combustion chamber 46a), and wasteful consumption of steam energy can be prevented.

The ECU 26 controls the amount of mist water supplied (cc/min) from the mist water supply mechanism 20 (first water injection nozzle 23a) into the mist water generation pipe 57 (combustion chamber 46a) when the automobile 11 travels downhill. ) to a minimum range of 30 to 32 μm (water supply minimum means). Although the engine speed (rpm) of the automobile engine 10 is high when driving downhill, there is no need to accelerate by depressing the accelerator pedal 35, so it is necessary to increase or decrease the steam energy by increasing or decreasing the engine speed (rpm). By minimizing the average particle diameter (μm) of the mist water when traveling downhill, wasteful consumption of steam energy can be prevented, and the load on the automobile engine 10 can be reduced.

10 Automotive engine 11 Automobile 12 Front area (engine room)
13 Intermediate area 14 Rear area (tank room)
15 Gasoline tank 16 Water supply pump unit 17 Water tank 18 Water injection port 19 Rotation speed sensor 20 Mist air supply mechanism 21 Water level sensor 22 Water supply amount control unit 23 Water injection nozzle 23a First water injection nozzle 23b Second water injection nozzle 23c Third water Injection nozzle 24 Accelerator work unit 25 Water supply pipe 26 ECU (Electronic Control Unit)
27 Meter panel 28 Water supply pump 29 Pressure regulator (pressure regulator)
30 Strainer 31 Bypass pipe 32 Solenoid valve for water supply 33 Injection surface 34 Injection port 35 Accelerator pedal 36 Accelerator pedal holder 37 Accelerator opening sensor 38 Exhaust manifold 39 Muffler 40 Fuel injector (injector)
41 Battery 42 Generator 43 Fuse BOX
44 Relay coil 45 Signal line 46 Cylinder 47 Piston 48 Spark plug (Spark plug)
49 CVTC valve 49
50 Ignition coil 51 Crank angle sensor 52 POS sensor 53 Temperature sensor 54 Knock sensor 55 Exhaust port 56 Front O2 sensor, rear O2 sensor 57 Misty water generation pipe 58 Air filter 59 Air flow meter 60 Electronically controlled throttle 61 Throttle

Claims (12)

an injector that injects gasoline, a cylinder with a predetermined volume, a piston that reciprocates in a combustion chamber of the cylinder, and an intake valve that supplies air or a mixture of the gasoline and the air to the combustion chamber of the cylinder; An automobile engine having an exhaust valve that exhausts combustion gas from the combustion chamber of the cylinder, and a spark plug that ignites a mixture containing gasoline in the combustion chamber of the cylinder,
The automotive engine includes a mist water supply mechanism that supplies mist water to the combustion chamber of the cylinder,
In the automobile engine, gasoline injected from the injector is supplied to the combustion chamber of the cylinder, and mist-like water having a substantially uniform average particle size is supplied from the mist water supply mechanism to the combustion chamber of the cylinder. The fuel-air mixture containing gasoline in the combustion chamber is compressed to a predetermined compression ratio by the piston, and is ignited by the spark plug, and the mist-like water is vaporized by the combustion heat of the combustion gas in the combustion chamber. An automobile engine, characterized in that the combustion energy of the combustion gas and the steam energy of the vaporized atomized water are converted into power. In the automobile engine, the air or a mixture of the gasoline and the air is supplied from the intake valve to the combustion chamber of the cylinder, and at the same time, mist water is supplied from the mist water supply mechanism to the combustion chamber of the cylinder. The automobile engine according to claim 1, which is supplied with water. In the automobile engine, mist water is supplied from the mist water supply mechanism to the combustion chamber of the cylinder when the engine rotation speed (rpm) reaches 1000 (rpm) or more. Automotive engine mentioned. The automobile engine supplies water from the mist water supply mechanism to the combustion chamber in proportion to an increase in engine rotational speed (rpm) when the automobile is traveling on a flat road, traveling uphill, or accelerating. The amount of mist water supplied (cc/min) is increased, and the amount of water supplied from the mist water supply mechanism is increased in proportion to the decrease in the engine speed (rpm) when the vehicle is running on a flat road or when the vehicle is running at deceleration. 4. The automobile engine according to claim 1, wherein the amount (cc/min) of mist water supplied to the combustion chamber is reduced. 5. The engine for an automobile according to claim 4, wherein the amount (cc/min) of mist water to be supplied to the combustion chamber is determined based on the opening degree of the accelerator when the automobile is running downhill. engine. The automobile engine supplies water from the mist water supply mechanism to the combustion chamber in proportion to an increase in engine rotational speed (rpm) when the automobile is traveling on a flat road, traveling uphill, or accelerating. The average particle diameter (μm) of the mist water is increased, and the combustion is carried out from the mist water supply mechanism in proportion to the decrease in the engine rotation speed (rpm) when the vehicle is running on a flat road or when the vehicle is running at deceleration. 6. The automobile engine according to claim 5, wherein the average particle size (μm) of the atomized water supplied to the chamber is reduced. The automobile engine minimizes the average particle diameter (μm) of the mist water supplied from the mist water supply mechanism to the combustion chamber either when the automobile is running downhill or when braking. The automobile engine according to claim 6. The automotive engine includes a temperature sensor installed in the cylinder to measure the combustion temperature of the combustion chamber, and in the automotive engine, the combustion temperature of the combustion chamber measured by the temperature sensor has reached an upper limit temperature. 8. The automobile engine according to claim 7, wherein the amount (cc/min) of mist water supplied to the combustion chamber of the cylinder is increased to maintain the combustion temperature of the combustion chamber below an upper limit temperature. The mist water supply mechanism includes a mist water generation pipe that generates the mist water, an air filter that removes impurities contained in air flowing into the mist water production pipe, and an air filter downstream of the air filter. an electronically controlled throttle installed to adjust the flow rate of the air; and an electronically controlled throttle installed downstream of the electronically controlled throttle in the atomized water generating pipe to inject the mist-like atomized water into the atomized water generating pipe. An automobile engine according to any one of claims 1 to 8, comprising a water injection nozzle. The water injection nozzle has an injection surface that draws a semicircular arc toward the inside of the mist water generating tube, and a plurality of injection ports for ejecting the mist-like water are perforated in the injection surface. The automobile engine according to claim 9, wherein: 9. The automobile engine according to claim 1, wherein the mist water supply mechanism is a water injector that directly injects the mist water into the combustion chamber of the cylinder. The automobile engine according to claim 10 or 11, wherein the average particle diameter of the mist water injected from the injection ports of the injection surface of the water injection nozzle or the water injection injector is in the range of 30 to 75 μm.

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