JPS5985478A - Preheater for engine - Google Patents

Abstract

PURPOSE:To previously heat an engine body including an engine chamber, engine oil, etc., by using an external power source. CONSTITUTION:A hot air ejector 3 is installed under the through hole 11a of a protector 11 at the bottom of an engine chamber 10. When electricity is applied to a hot air machine body 1, hot air is produced in the body and blown into an outside member 8 through an air supply tube 2 and the connecting port 8b of the outside member to heat an expansible member 5 to apply a force to the expansible member to expand it in the axial direction. As a result, a vertically moving member 4 moves up as a packing 7 fitted on the outside step 4d of the vertically moving member slides on the inside circumferential wall of the outside member 8. Blowing is effected so that hot air is discharged from the small holes of the top of the vertically moving member 4. According to this constitution, starting in a cold weather is facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is intended to facilitate the starting of an automobile engine in a cold season, by completely safe and easily using an external power source. This invention relates to a preheating device for an engine.

Conventional structure and its problems In general, automobile engines in cold seasons require lubricating oil,
Cooling water, intake air temperature, and the engine itself are abnormally low, which not only makes it difficult to start, but also causes sludge and rust to form on lubricating oil and sliding parts, accelerating wear on cylinders, piston rings, etc. ing. In addition, the friction horsepower increases, resulting in poor fuel efficiency9 and increased costs. Furthermore,
Due to the rapid combustion heat generation of fuel, malfunctions such as distortion due to temperature imbalance inside and outside the engine occur frequently, causing a shortened engine life.

Also, in cold weather, it is normal to warm up the engine for about 5 to 1 minute before starting the car, but in places like our country where residential buildings are densely packed, the noise and exhaust gas during warm-up can be reduced. This is becoming a social norm that makes it extremely difficult for the people who live in the vicinity to bear it, and this is something that car owners should be very careful about.

Furthermore, even if the engine is warmed up for about 5 to 10 minutes, the fuel efficiency deteriorates significantly every day, increasing costs.

In addition, preheating of the engine is one of the extremely important issues in emergency vehicles, etc., because it is necessary to always be ready to be dispatched immediately.

Also, many drivers know that they need to warm up their cars early in the morning during cold seasons, but because they have to get ready for work within a short time, they end up starting the car at full speed without warming it up. It also caused a shortened lifespan.

OBJECTS OF THE INVENTION The present invention provides an engine preheating device that can solve problems such as noise, exhaust gas, and fuel consumption during warm-up operation, and can easily warm the engine body.

Structure of the Invention The device of the present invention includes a hot air fan that operates using an external power source, and a hot air discharge device that supplies hot air from the hot air fan to the engine body, and the hot air discharge device has an elevating member. The engine body is preheated by raising and lowering an elevating member using an extensible member that expands and contracts in response to the start and stop of blowing warm air.

DESCRIPTION OF EMBODIMENTS Hereinafter, one embodiment of the present invention will be described in detail with reference to the accompanying drawings.

One end of the air pipe 2, which delivers hot air generated by the hot air machine main body 1 to an arbitrary location, is removably connected to the hot air machine main body 1, which is equipped with a heating element and a fan motor and operates on AC power, and the other end is detachably connected to a warm air discharge device 3 that moves up and down in response to the start and stop of hot air blowing. The blower pipe 2 may be made of resin or metal, but may also be a rubber hose with high elasticity, which is not easily destroyed even if accidentally stepped on by an automobile tire, or a flexible fiber hose with airtightness. The hot air discharge tool 3 has a configuration as shown in FIGS. 2 and 3.

That is, the top surface is provided with a plurality of through holes 4a and a flange portion 4b having an oval-shaped cross section, and the shaft portion 4C is suspended from the sword 1 in the center of the top surface.
A substantially circular elevating member 4 having a stepped portion 4d on the lower outer side and a through hole 4a in the top surface were covered and solidified on the top surface. A filter-like sheet 46 having a large number of micropores and a flange portion 4b
a substantially bellows-shaped sealing member 4f made of elastic, heat-resistant and oil-resistant rubber, etc.; a cylindrical portion 61L having a substantially flat-headed hollow rivet shape that fits into the shaft portion 4C; and a flange portion 6b at the bottom.
a shaft guide member 6 with One or more packings 7 such as O-rings made of a material with a small coefficient of vibration prevent air from spreading from the outer periphery of the lifting member 4 during lifting and lowering operations, and allow the lifting member 4 to slide smoothly. A planar external member 8 having an opening at the top, a stepped part 81' (5) at the upper inner side, and a connecting port 8b for detachably connecting the blower pipe 2 to the side, and a shaft guide member 6. and a back plate 9 that secures the outer member 8 and the outer member 8 and ensures airtightness of the bottom of the outer member 8.The elastic member 5 has a tightly wound spiral shape at room temperature, and when heated, the back plate 9 It has been subjected to amnestic treatment to be stretched beyond its dimensions at room temperature.

Next, the functions and effects of the above configuration will be described. Turn on the hot air discharge device 3 with the engine of the car stopped.
Set it in an appropriate position below the engine compartment 10 of jJJ cars, etc. That is, the hot air discharge tool 3 is placed below the through hole 11a provided in the protector 11 at the bottom of the engine compartment 10. Through hole 11? An engine main body 12 is disposed above L, and a part of an oil pan 13 provided at the bottom of the engine main body 12 is close to the through hole 11a.

When the hot air fan main body 1 is energized, hot air is generated in the hot air fan main body 1, blows into the external member 8 from the connection port 8b of the external member 8 through the air pipe 2, and heats the expandable member 5. Warming n
A force that extends in the axial direction acts on the elastic member 5, and the elevating member 4 rises while sliding the entire inner circumferential wall of the outer member 8 by the backing 7 attached to the outer step 4d of the elevating member 4. In addition, along with the air blowing, hot air begins to be discharged from the microholes 4e provided on the top surface of the elevating member 4. The lifting of the lifting member 4 continues until the outer step 4d of the lifting member 4 hits the step 8a of the inner sacrum 1 of the outer member 8, and the seal fsB material 4f comes into close contact with the outer circumference of the through hole 11+a of the cuff loft 11. The warm air discharged from the micro holes in the seat 4e is blown into the engine compartment 10 through the through holes 11a, heating the oil pan 13 and the engine body 12.

Next, when the power to the warm air fan body 1 is cut off, the air blowing is stopped.
The temperature inside the hot air outlet 3 and the temperature of the expandable member 6 begin to drop. As the temperature of the expandable member 5 decreases, the expandable member 5 begins to shrink in the axial direction in an attempt to approach its dimensions at room temperature, and the elevating member 4 slides down the inner wall of the outer member 8 at the vano king 7 portion.

In addition, as a method for quickly lowering the lifting member 4 while it is rising by blowing warm air, the temperature of the expandable member 6 can be lowered by turning off the heating element of the hot air fan body 1 and blowing only cold air.
It is also possible to bring the temperature close to room temperature and lower the elevating member 4 by 1 sl. Since the time required for cooling the expandable member 5 is about 1 minute, and the engine preheating time is about 30 minutes, there is no problem even if cold air is blown into the engine compartment 1° for about 1 minute.

Even in cold weather, the entire engine compartment 10, engine main body 12, oil drain 13, etc. are preheated by driving the hot air fan main body 1 with an external power source such as a power source for blowing, so starting the engine is very easy. become. In addition, since the lubricating oil is heated, the wear of cylinders and piston rings is maintained at normal levels, and the cooling water is also heated to a certain extent.
Since the engine is warmed up, the engine can be started quickly and the driver's cabin can be heated quickly. Even when starting the engine and during starting, the frictional horsepower is smaller than when starting the engine when it is cold, and fuel efficiency is improved. Furthermore, since the engine body 12 is warmed in advance,
Compared to cold engine starts, the temperature difference between the inside and outside of the engine is small, and there is less distortion due to temperature imbalance, so the engine life will not be shortened. Loud engine noise is often heard, but according to the example, the only sound is the motor sound of the hot air fan unit 1 and the air blowing noise, and even if the hot air fan is operated early in the morning in a crowded residential environment,
The sound is extremely low and doesn't bother you.

In addition, in recent years, cars in cold regions have installed sheathed heaters that are energized by an external power supply or coolant heating sections that incorporate heaters inside the engine, such as cooling water channels, which increases the weight of the vehicle. This leads to deterioration of fuel efficiency, but according to the example, the preheating section can be separated from the vehicle body, which can significantly contribute to reducing the weight of the vehicle, which in turn improves driving performance and fuel efficiency. .

In addition, in the case of conventional type heaters, since they are attached to the engine part, they must be grounded to prevent electric shock when the heater deteriorates, but in general, heaters with a 100V power supply and equipped with a ground terminal are required. There are few electrical outlets available, making it necessary to install receptacles with ground terminals that are securely grounded. In addition, in reality, there was a high risk of electricity being supplied without grounding, but according to the example, the heater was located in a separate location from the vehicle body, and it was electrically isolated. Therefore, there is no need to ground the car body, and there is no need to worry about electric shock even if you touch the car body.

Furthermore, it is safe because the engine body 12 is heated only by hot air, and there is no spark near the engine compartment 10 that can cause ignition.

Also, if you estimate the total maintenance cost due to conventional warm-up operation, for example,
In a regular car with a displacement of around 150CI8, the normal engine speed when the engine warms up after warm-up is soor.
pm, it consumes about 1oCC of fuel per minute,
In cold weather, the engine will not start unless the choke is activated, so gasoline consumption increases due to the choke operation. That is, the engine speed at room temperature when the choke is activated is about 1600 rpm, and the fuel consumption per minute is approximately proportional to the engine speed, and the engine warm-up time with the choke activated is 160 yen/l for a total of 10 minutes. So, it will cost about 36 yen. However, in the example device, 1K
In the case of a W heater, it only takes about 30 minutes, so the cost is about 15 yen, making the maintenance cost extremely low and energy saving.

In addition, by attaching a timer to the hot air fan body 1, it is possible to avoid the conventional process of going to the car to warm up the engine and starting the engine fully, or continuing to warm up for a longer time than necessary. It is possible to completely eliminate wastefulness and waste. In other words, it is possible to automatically warm up the engine at the desired time and for the necessary amount of time without having to go to the trouble of stopping by the car, making effective use of the busy morning time preparing for departure. It eliminates the hassle of having to go all the way to your car on cold mornings, and greatly contributes to a more relaxed lifestyle.

In addition, since the elevating member 4 is moved up and down by the extensible member 5 made of a shape memory alloy that automatically expands and contracts by detecting temperature changes, the elevating member 4 rises during hot air blowing, and the through hole 1
To reliably blow hot air from 1a to the work/gin room 10 without air leakage, and to quickly and surely lower the elevating member 4 when the blowing of hot air is stopped or when blowing cold air, thereby interfering with automatic single start. There is no. Note that since the expandable member 5 is made of a shape memory alloy, the elevating member 4 can be moved up and down reliably, but a temperature sensitive member such as a bimetal may also be used.

Effects of the Invention As described above, the present invention uses an external power source when the engine is stopped to operate the main body of the hot air fan, which is located at a distance from the vehicle body, to raise and lower the engine body of the vehicle. Since it is heated with hot air from the air discharge device, it is possible to start the engine easily, reliably, and safely in cold weather.It also contributes to weight reduction, and also improves engine life and warms the engine. It also becomes possible to reduce maintenance costs. In addition, the noise impact on nearby residents is greatly reduced, making the dog extremely valuable for practical use.

[Brief explanation of drawings]

FIG. 1 is a partially cut-away front view showing a state in which an automobile engine body is heated by an apparatus according to an embodiment of the present invention, and FIG. 2 is a partially cut-away front view showing the operating state of the same device. , FIG. 3 is a cross-sectional view showing the device when it is not in operation. 1...Hot air machine main body, 3...Hot air discharge device, 4...Elevating member, 5...Extensible member. Name of agent: Patent attorney Toshio Nakao (1st person)
Figure/θ/? 512 Figure 2 Figure 3

Claims (1)

[Claims] The hot air blower includes a hot air blower main body that operates using an external power source, and a hot air discharge tool that supplies hot air from the hot air blower main body to the engine main body, and the warm air discharge tool is capable of starting and stopping the hot air blowing. An engine preheating device that has an elevating member that moves up and down.