JPS6172857A - Heating device for internal-combustion engine - Google Patents

Abstract

PURPOSE:To heighten a degree of thermal efficiency as well as to aim at improvements in fuel consumption and engine output, by taking the air heated in and around an exhaust pipe into a suction pipe from a branch pipe and letting an engine inhale it, in time of engine cooling and low suction temperature. CONSTITUTION:In case of a device which connects an auction pipe 11, provided with a filter 7, and an exhaust pipe 2 to an engine 3, the suction pipe 11 at the inlet side of the filter 7 is branched off into branch pipes 12 and 13, and the other end of the branch pipe 13 is opened and connected to a cover 21 covering an circumference of the exhaust pipe 2. Each of on-off valves 51 and 52 to be controlled for their opening or closing by an electronic control unit 4 is interposingly installed in and around a branch part of these branch pipes 12 and 13. And, on the basis of an output signal out of a temperature detecting sensor 6 set up in an engine side end apart of the suction pipe 11, the valve 51 alone is opened in time of warm-up running, and the air heated inside the cover 21 is inhaled in the engine from the branch pipe 13 via the suction pipe 11. And, when it is more than the setting suction temperature, the valve 51 is closed but the valve 52 is opened, thereby shifting to normal running.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a heating device for an internal combustion engine that heats intake air to save fuel.

<Prior art> Diesel engines have poor practical thermal efficiency due to insufficient gasification, incomplete combustion, etc. Its practical thermal efficiency is at most 1
The current rate is 5%. Automobile manufacturers' catalogs list combustion consumption rates, but this data is the result of testing based on the 10-mode standard set by the Ministry of Transport. However, when a car actually travels, it is not always the case where the conditions are ideal as indicated by the 10-mode standard. Therefore, the practical fuel efficiency rate is 1 above.
There are 1. differences from the data shown based on the 0 mode standard. ,
The current situation is that the distance traveled per e is drastically decreasing.

We conducted an actual driving test to determine the cause of this, taking into account the outside temperature, weather, etc., and obtained the following data.

Location Between Liao Kumagaya - Flower Road - National Highway No. 254 Fujioka Car type 1 Isuzu Florian, 54 year model, diesel car, 160
0cc (See Table 1) To N - To " r m 1n h 0 To I
n < (N ro [11t, average value of fuel consumption for the above six times i24.7Krn /
It is A.

Also, for reference, I'll show you the data when it's cloudy for half the trip.

(See Table 2) Also, let me show you the data when the temperature is low in May.

(See Table 6) Let me explain the above data.

Comparing the average running value of 24.7 Krrb/A with the running value of 15.6 Km/-6 on May 17th at a temperature of 25°C, we get 24.7 Trn/A÷15.6 Kn/
A-1,5833 showed a 50% increase in running time when there was a 10°C difference in temperature.

Kvb/-e of 815 days and 7726.872 days.”
As you can see from the comparison, there was a big difference in mileage growth between cloudy and clear skies even under similar temperatures.

Next, I will explain two technologies that are similar to this invention: (1) Ultra QO8 (used in Isuzu's 1958 model Fargo) is a device that heats intake air at the time of starting to make it easier to start. This uses electric heat as a heat source and is used only during startup. When this device is used as the device of the present invention, it requires a large amount of electric heat, which has the disadvantage that the engine output ratio decreases.

(2) Another technique is a turbo whose purpose is to compress intake air by rotating at high speed. This uses exhaust pressure as the power source and uses an intercooler to cool the engine and increase air density. The principle of the present invention is applied when cooling is stopped at a set temperature described later in the second aspect of the present invention during cooling. However, turbo devices have the drawbacks of being prone to failure, being complex, and expensive.

To explain the above set temperature here, it is appropriate to measure the temperature at the intake port of the engine.

=5- When the temperature of the lid of the intake port was measured, it was around 60°C. In addition, since diesel engines are expressed in terms of cetane number, the above set temperature is set at 60°C, which conflicts with the need to improve anti-knock performance in gasoline engines.
You can set more than that.

However, the inventor was unable to determine which temperature is the limit temperature.

<Means to solve the problem> In an internal combustion engine system, in order to maintain the temperature of the intake air from the intake pipe θ to the one-port filter (7) to a constant set temperature, a valve 51 that can be opened and closed is installed in each of the two branch pipes. 52). This valve (51
) (521 is connected to a separately installed electronic control unit, and is controlled so that the intake air temperature detected by the detection sensor (6) is kept constant at the set temperature.

Create a device like the one above.

With this configuration, the above-mentioned summer conditions are artificially created, fuel is saved as driving increases, and exhaust pollution is prevented by reducing complete combustion gas, output is greatly increased, speed is increased,
Increased acceleration power, greatly improved driving and steering performance, etc.2
The aim is to provide a device that dramatically improves engine performance.

<Example of implementation> 1 A. In an internal combustion engine device in which the intake pipe 0■1 port filter (7), intake pipe 01), engine (3), and exhaust pipe (2) are sequentially connected, Intake pipe 0 port mouth filter (7
) is branched into two branches near the entrance to 2 branch pipes α and 0.
The intake pipe α1 is arranged between one branch pipe 01 and the exhaust pipe (2) so that one end opening of the intake pipe α1 reaches the vicinity of the exhaust pipe (2).

The suction rate of air heated by the exhaust pipe (2) is improved.

If the intake air does not reach the desired temperature, cover (21)
) to set the desired size by making it longer or making it fit closer to the exhaust pipe. On the other hand, the two-branch pipe has an on-off valve (5) that can be opened and closed on both limb pipes that connect to the conventional inhalation and trachea (5).
(!'i2) are provided respectively. There are two types of power sources for opening and closing the valve, one of which is a motor drive system. The other type is a spring type. There are known embodiments of the spring type operated by a voltmeter meter.

口 Install an electronic control unit at any location,
In addition to wiring the temperature detection sensor (6) installed at the engine side end of the intake pipe 0η, the electronic control
The unit (4) and the valve (51) (521) are connected by wiring, respectively.Electronic control units are known to each manufacturer of electronic equipment.

To use the structure constructed as described above, first, a known heating device is used. Currently, Isuzu's Ultra QO8 is a device in practical use in textiles. Before starting, valve 5
1) is open, the valve is set to close, and as the engine gradually heats up by continuing to operate at a slow speed, the heated intake air flows through the opening of the intake pipe 0 to the valve (51), the mouth filter (7), It is absorbed into the engine through the intake pipe 01). Further, the operation continues, and when the intake air temperature detected by the detection sensor (6) exceeds the set temperature, the 4P sister starts opening and the valve (521) starts to close when it exceeds the set temperature even if the valve (521) is fully open. At this time, the opening of the valve and the closing of the valve 61) may proceed simultaneously. The set temperature has been tested up to the outside temperature of 65°C, but it can be made higher. Adjustment of the electronic control unit according to these set temperatures can be set depending on the place of use.

2 In an internal combustion engine device in which a suction pipe 0■2 port filter (7), suction pipe 0]) and an engine (3) are sequentially connected, a port filter (7) is connected to the suction pipe → ), there is an advantage that the compression temperature of the intake air of the electric heating box can be obtained at 540°C or higher. There is also the advantage that the temperature control device becomes simple. However, when constantly heating the intake air with electric heat, a large amount of electric heat is required, which has the disadvantage that the heat output ratio of the engine decreases.

<Effects of the Invention> As described above, the present invention draws in high temperature through the opening near the exhaust pipe, and the intake air is always heated to the temperature of the summer condition that optimizes engine thermal efficiency, and is then drawn into the engine. This improves fuel gasification. This makes the combustion nearly complete, resulting in the best possible explosion, which results in a huge saving of fuel, and also reduces the amount of incompletely combusted gas in the exhaust gas, thereby preventing exhaust pollution. Another disadvantage of diesel engines is that they are less powerful.

When using the present invention, the output increases and the acceleration force also increases significantly. Therefore, the acceleration time is shortened, and the unnecessary time of depressing the accelerator beyond the explosion saturation point is shortened, resulting in less incomplete combustion. Furthermore, as the acceleration and speed increase, the driving and steering performance improves.In fact, the Gazelle engine has a high compression ratio of 20:1, which causes a lot of noise pollution.
This is necessary to create an ignition temperature of 0°C using the heat of compression, so heating the intake air temperature will increase the temperature during compression, so the compression ratio can be lowered to bring the ignition temperature to around 540°C. This will prevent noise pollution.

As described above, the present invention provides an engine with a simple configuration.

In particular, it improves the practical thermal efficiency of diesel engines, bringing them closer to complete combustion and preventing exhaust pollution.

This is a very noticeable effect, and requires only one intake pipe to be added to the conventional configuration.

Since there is no need to provide a special heat source device, it is inexpensive and trouble-free.

Application Examples> This invention mainly describes a diesel vehicle. However, it is also effective for gasoline-powered cars in places where the outside air temperature is low. Regarding anti-knock properties, there is no problem if the suction heating temperature is set to summer temperature. Currently, many gasoline-powered vehicles are being used under this summer temperature.

Also, diesel engines are not limited to cars.

Although it is used for various types of generators for ships, the principle is the same, so it can be used for diesel engines other than the above-mentioned cars.

[Brief explanation of drawings]

Claims (1)

[Claims] A. The filter (7) of the intake pipe (12), the intake pipe (11)
, in an internal combustion engine device in which an engine (3) and an exhaust pipe (2) are arranged in series, the intake pipe (12) is branched into two branches near the entrance to the filter (7); The intake pipe (13) is arranged between the branch part and the exhaust pipe (2) so that one end opening of the intake pipe (13) reaches the vicinity of the exhaust pipe (2), and on-off valves (51) and (52) are provided in both branch pipes, respectively. establish. (b) Placing an electronic control unit at any location,
The electronic control unit and the temperature detection sensor (6) arranged at the engine side end of the intake pipe (11) are connected, and the electronic control unit and the valve (51) are connected.
(52). A heating device for an internal combustion engine having the above configuration.