JP2007085178A - Method and device for increasing air-fuel ratio of engine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and a device for increasing the air-fuel ratio of an engine. <P>SOLUTION: Primarily, a controller for an installed fan is installed at the front of a fuel injection device of a vehicle. A fan of the controller controls the rotational speed of the engine by a generator of the vehicle. An air amount required by an air-fuel ratio according to the rotational speed of the engine can be provided. The air-fuel ratio of the engine can be increased by the air fed forcibly. Consequently, the engine can save fuel and efficiently transmit power. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention mainly controls the air flow of the controller by the voltage of the generator, supplies the air amount required by the fuel in a timely manner by a forced method, and increases the air-fuel ratio of the engine. A method and apparatus for improving the fuel ratio are provided.

The power of the automobile is an engine, and the piston is pushed out by the force of the explosion generated by the combustion of the fuel gas in the cylinder. Therefore, it is necessary to obtain good engine performance, and it begins with improving the combustion efficiency of the engine. The engine performance can be improved by finding out how to improve the combustion efficiency and thermal efficiency of the engine from the combustion theory of the fuel in the cylinder. The combustion cycle of the engine is performed in a cylinder, and due to factors such as temperature, pressure, heat conduction, and residual exhaust gas, it is considerably more complicated than general combustion. In order to find an advantageous method for combustion of the engine, it is necessary to study in detail the main factors of air-fuel ratio and excess air ratio. The air / fuel ratio A / F is the ratio of the air weight and fuel weight required for the engine to perform a combustion reaction. Indicates that the gas is thin. Based on the chemical reaction equation for gasoline combustion, the theoretical air-fuel ratio for complete combustion of gasoline is calculated to be 15.1: 1, but if you want to perform complete combustion under actual combustion conditions, the required air The amount is often higher than theoretically required. The ratio of the actually required air amount to the theoretical air amount is called the excess air ratio λ, which means that the amount of air supplied to the engine increases as λ increases. The burning rate varies depending on the composition, pressure, and temperature of the mixed gas, and the air / fuel ratio is the most significant effect. If it is slightly richer than the ideal air / fuel ratio (15.1: 1), the maximum combustion rate can be obtained, and if the air / fuel ratio is low or high and reaches a certain limit, the flame is no more This limit becomes the combustion limit without developing. The combustion limit of gasoline is 22: 1 to 8: 1, and the limit of stable operation is 18: 1. Therefore, the “lean combustion method” technology (Lean
Burn Combustion System) means that the engine is operated as close to the lower limit of the combustion limit as possible and without knocking.

  As shown in FIG. 1, a conventional injection type engine and its air and fuel supply system include a fuel injection device 2 installed in front of a cylinder 1, connected to an air filter device 4 by a connecting pipe 3, and an intake pipe 5. In this fuel supply system, an intake valve 21 is installed in the fuel injection device 2, an intake sensor 31 is provided in the connecting pipe 3 in front of the fuel injection device 2, and the engine is started. After that, when the accelerator pedal is stepped on, the intake valve 21 opens in a manner corresponding to the pressure applied by the pedal. As shown in FIG. 2, that is, as the amount of accelerator increases, the intake valve opens widely, sucks in a lot of air, and is compressed and ignited in the cylinder after being compressed, The power of is generated. When the intake valve is opened and a large amount of air is taken in, the intake sensor 31 detects and measures the amount of intake air, which is transmitted to the fuel injection control device, ejecting a corresponding amount of fuel, resulting in an optimal air-fuel ratio, Optimum engine efficiency can be obtained. However, in the design of the intake sensor 31, electronic control is adopted. Therefore, there is a time lag from measurement to detection, and the measurement value has a tolerance of 5%. Although the measurement tolerance ratio is within acceptable legal tolerances, the detection time lag causes the amount of air drawn by the intake valve to be less than the amount of air to be drawn to mix with the fuel. Also, since there is a deviation in the time axis, the compression for mixing with the fuel gas is lower than the above level, causing incomplete combustion. This situation is especially apparent when the car starts to move from a standstill and when it gradually shifts from low speed to high speed. When the driver steps on the accelerator, the car gradually accelerates, and then the car vibrates and speeds up. A situation that disappears will occur, and then it will be possible to accelerate forward in order. If you keep driving while maintaining high speed, there will be no situation where the car vibrates so much that the speed does not increase.

  In addition, when a vehicle runs in a high altitude region, the air in the highland is lean, so the amount of air taken in by the intake valve is insufficient, and the air-fuel ratio is lowered. Therefore, combustion of the fuel in the cylinder becomes incomplete and knocking occurs, so that the horsepower of the engine is reduced and the power to climb the car is insufficient, that is, the altitude sickness of the car, such a state The same occurs regardless of the displacement of the car. For this reason, turbo engines have appeared. The principle is that the exhaust blades of the engine rotate the blades of the turbine, and the air compressor on the rotating shaft of the turbine compresses the fresh air taken into the engine and then supplies it for combustion in the engine. . The turbine must drain the engine power as well, because, according to the theory of thermodynamics, the turbine blades can be rotated if the engine exhaust gas pressure is very high, which means that the engine horsepower Reduce output. Further, the air used by the turbo engine is the exhaust gas discharged from the engine. However, after the exhaust gas is sucked into the cylinder at a high temperature, it cannot be used at a high compression ratio, and since the oxygen contained in the high-temperature exhaust gas is small, the air-fuel ratio of a normal turbo engine is usually 9: 1. Otherwise, the engine cylinder cannot withstand knocking, so how to effectively improve the air-fuel ratio is to overcome engine altitude and car altitude sickness. Is the main point.

    The first object of the present invention is to provide a method for improving the air-fuel ratio of an engine. The voltage value mainly generated from a generator of a car is used as a basis for the rotational speed of a drive fan, and air having a high oxygen concentration is used. Is forcibly sent to the intake valve to make it coincide with the amount of air required at the time of acceleration to achieve the purpose of improving the air-fuel ratio of the engine.

  A second object of the present invention is to provide a method for improving the air-fuel ratio of an engine. A voltage value generated mainly from a vehicle generator is used as a basis for the rotational speed of a drive fan, and a low pressure taken from outside the vehicle. This is to improve the power generated from the engine by increasing the oxygen concentration and compression ratio after being sucked into the cylinder.

  A third object of the present invention is to provide a device for improving the air-fuel ratio of an engine, and a controller having a fan is mainly installed in front of a fuel injection device, and the controller uses a car generator. The purpose of improving the air-fuel ratio and engine power is achieved by controlling the air supply amount and providing the air amount necessary for the opposing air-fuel ratio based on the rotational speed of the engine.

  A fourth object of the present invention is to provide an apparatus for improving the air-fuel ratio of an engine, and a controller having a fan is installed mainly in front of a fuel injection device, and the controller installs an air filter device. By purifying the air sent to the intake valve, the combustion efficiency of the engine can be increased and the carbon deposit in the cylinder can be reduced.

  A fourth object of the present invention is to provide an apparatus for improving the air-fuel ratio of an engine, and a controller having a fan is installed mainly in front of a fuel injection device, and when the controller steps on the accelerator in a timely manner, The objective is to improve fuel efficiency by supplying the right amount of air into the cylinder and using the maximum engine power obtained.

  According to the first aspect of the present invention, the air sucked in by the fan is forcibly supplied to the inside of the injection device before the fuel injection device of the engine, and the rotation of the fan is caused by the voltage generated from the power generation device installed in the vehicle. The engine air-fuel ratio is characterized by increasing the engine air-fuel ratio by adjusting the rotational speed of the fan and providing the fan with a relative amount of air based on the accelerator amount, resulting in optimal efficiency for the engine. Is a way to improve,

  The invention described in claim 2 is connected to a controller in front of the fuel injection device of the engine, wherein the controller is provided with a hollow storage cylinder at the front end side of the hollow case, a fan is provided in the case hollow channel, and the fan Is a device that improves the air-fuel ratio of the engine by adjusting the rotation speed of the fan according to the rotation speed of the engine using a control device and installing a filter in the storage cylinder,

  The invention described in claim 3 is an apparatus for improving the air-fuel ratio of an engine according to claim 2, wherein one or more fans in the controller are provided depending on the size of the cylinder.

  The invention described in claim 4 is also possible in a case where the controller has only a fan, and various foreign matters such as dust and dust contained in the air are removed by an air filter device installed in the vehicle. The apparatus for improving the air-fuel ratio of the engine according to claim 2.

  First, as shown in FIG. 3, in the present invention, a controller 6 is connected in front of the fuel injection device 2, and the controller 6 mainly includes a case 61, a storage cylinder 62, a fan 63, and a filter 64. The control device 7 is fixed, the connecting pipe 3 at the end of the fuel injection device is connected to the tip of the case 61, and the other end is connected to the air inlet pipe 8 of the automobile. Among them, the filter 64 can be removed and washed, and can be used many times. The number of fans 63 installed is determined based on the capacity of the cylinder, and the rotation speed of the fans 63 is adjusted by the control device 7. The principle of control of the control device 7 is that the car engine is driven by the generator of the car. After that, it is determined based on the voltage value generated from the generator. As the rotational speed of the engine increases, the voltage generated from the generator also increases, that is, the amount of power generation increases, so that the rotational speed of the fan 63 can be relatively accelerated to provide a larger amount of air.

  In the embodiment shown in FIG. 3 of the present invention, the main structure of the controller 6 is that a storage cylinder 62 is installed in front of the fuel injection device 2 connected to the case 61, and as shown in FIG. A joint base 65 is connected to each of the end and the storage cylinder. Among them, the case 61 is a hollow cylinder whose both ends are open, and three fans 63 are fixed at intervals in a space 611 in the cylinder. The number of the fans 63 is determined by the size of the cylinder. One or more are provided. The storage cylinder 62 is also a hollow cylinder, and a filter 64 is fitted in the cylinder. The hole 621 on the upper side of the cylinder is closed by the plate 622, and the filter 64 can be taken out, cleaned, and replaced. 623 is provided at the front end of the case, the front hole 624 is joined to the joint base 65, the two joint bases extend to the center of the ring plate 651, have a hollow joint 652, and mesh in the joint space. A filter 66 is provided, and by design, the mesh filter hole 661 has a structure in which the outside is large and the inside is small, so that the wind pressure at the time of inhaling air can be increased and foreign matter can be prevented from entering. The control device 7 is installed above the case 61, and the rear of the case 61 is connected to the air intake pipe 8 of the vehicle by the intake pipe 5.

  When the present invention is used, as shown in FIG. 3, after the car engine is started, the engine is usually kept in a stagnation state within one minute by the control of the automatic oil supply system. Can have power generation capability within 20 seconds of the engine starting to rotate, and it is not necessary to use the car battery's electrical energy to rotate the engine. Therefore, the generator 63 only rotates at a minimum speed, and the fan 63 is controlled by the voltage of the generator, and the fan also rotates at the minimum rotation speed, so that the generated wind pressure is reduced, and the fuel injection device 2 It is impossible to enter the intake valve 21 in this case. At this time, the air sucked by the rotation of the fan 63 is stored in the storage chamber 625 in the sealed storage cylinder 62, and when the driver steps on the accelerator pedal, As shown in FIG. 5, the opening degree of the intake valve 21 is determined by the degree of depression of the accelerator pedal. When the intake valve 21 is opened, the air stored in the storage chamber 625 is sent to the cylinder by the intake valve 21. At the same time, the generator is rotated by the rapid movement of the engine, and then the generated voltage increases. The rotation speed of the fan 63 can be increased by the control device 7. When the rotational speed of the fan increases, air can be sucked by the air suction pipe 8 connected to the fan, and the air is forcibly sent to the open intake valve 21 to enter the fuel and the cylinder. Since the air sucked from the air suction pipe 8 is external cold air, its oxygen concentration is high, and after passing through the filter 64 in the storage cylinder, clean oxygen is supplied with high oxygen concentration and mixed with fuel. When the obtained fuel gas is compressed in the cylinder, the air-fuel ratio obtained by measurement is higher than the air-fuel ratio in the conventional case. That is, when the fuel gas is ignited and exploded, the engine can generate more power. In addition, since the air-fuel ratio of the fuel gas is high, combustion does not become incomplete during an ignition explosion, it is possible to prevent carbon from accumulating in the cylinder, reducing the occurrence of cylinder failure and knocking, Further, since the injected fuel gas burns completely, the fuel can be effectively converted into power, and the fuel consumption can be improved.

  Moreover, since the rotation speed of the fan 63 is controlled by the voltage of the generator according to the rotation speed of the engine, an appropriate amount of air can be supplied by the fan in a timely manner based on the accelerator amount, and thus a sufficient amount of air can be supplied. When supplied, there is no time lag for fuel injection, and when the car starts moving, the fuel gas can generate power in the engine and provide power relative to it based on the amount of accelerator, The gears can be changed smoothly and easily by the automatic transmission, and the car can be accelerated and advanced stably. Therefore, the gear of the transmission of the vehicle does not run idle, and it is possible to prevent the transmission from being damaged. In addition, when the vehicle runs in an area above sea level, the amount of oxygen in the air in the high altitude is lean, but since the rotational speed of the engine in the present invention is increased, the control device 7 to control the fan 63 to supply an appropriate amount of air and to generate horsepower in the car engine, the car will not cause altitude sickness and the car will run regardless of whether it goes up or down the hill. Depending on the state of the accelerator, sufficient horsepower can be obtained, and the vehicle can be accelerated and advanced stably without giving the driver a feeling of stall during acceleration.

  Further, if the current air filter device of the vehicle is not changed, it is only necessary to attach a fixed fan case 61 between the air filter device 4 and the fuel injection device 2 as shown in FIG. The pipe 3 is used as a storage chamber, and at the time of acceleration, air and a charge are immediately supplied and mixed to generate optimum power for the engine.

1 is a schematic view showing an intake system device for an engine according to the related art. 6 is a schematic diagram showing an intake system operation of an engine according to the related art. 1 is a diagram showing an engine intake device according to an embodiment of the present invention. The exploded view which shows the controller which concerns on the Example of FIG. 1 is a schematic diagram showing an intake system operation according to the present invention. The another Example figure which concerns on other this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cylinder 2 Fuel-injection apparatus 3 Connection pipe 4 Air filter apparatus 5 Intake pipe 6 Controller 7 Control apparatus 8 Air inlet pipe 21 Intake valve 31 Intake sensor 61 Case 62 Storage cylinder 63 Fan 64 Filter 65 Joint base 66 Mesh filter 611 In-cylinder Space 621 Hole 622 Plate 623 Rear hole 624 Front hole 625 Storage chamber 651 Ring plate 652 Joint 661 Mesh filter hole

Claims (4)

The air sucked by the fan before the fuel injection device of the engine is forcibly supplied to the inside of the injection device, and the rotation of the fan adjusts the rotation speed of the fan by the voltage generated from the power generation device installed in the car. A method for improving the air-fuel ratio of an engine, characterized in that the air-fuel ratio of the engine is increased by providing a relative air amount based on the accelerator amount, thereby causing the engine to have optimum efficiency. Connected to a controller in front of the engine fuel injection device, the controller is provided with a hollow storage cylinder at the end of the hollow case, a fan is provided in the hollow channel of the case, and the fan uses the control device to rotate the engine. A device for improving the air-fuel ratio of an engine, wherein the rotational speed of the fan is adjusted by the speed, and a filter is installed in the storage cylinder. The apparatus for improving the air-fuel ratio of an engine according to claim 2, wherein one or more fans in the controller are provided depending on the size of the cylinder. The engine according to claim 2, wherein the controller can be a case having only a fan, and various foreign matters such as dust and dirt contained in the air are removed by an air filter device installed in the vehicle. A device that improves the air-fuel ratio.

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