JP2540534Y2 - Injection of LPG etc. to increase output of diesel engine, save fuel consumption and reduce black smoke - Google Patents

Description

[Detailed description of the invention]

[0001]

[Industrial application field] The present invention relates to a diesel engine LP.
The present invention relates to a device for increasing output, fuel economy, and reducing black smoke by injecting G or the like.

[0002]

2. Description of the Related Art In order to increase output, reduce fuel consumption and reduce black smoke of a conventional diesel engine, it is necessary to achieve more complete combustion inside the engine, and a device for increasing the pressure of a supercharger or the like is required. Improves combustion efficiency.

Accordingly, the applicant of the present application has disclosed Japanese Patent Publication No. Hei 3-930.
No. 2 was proposed. This is because an LPG injection nozzle whose nozzle diameter can be adjusted is attached to the air intake of the intake manifold of the diesel engine, and a supply valve and a pressure regulator for stopping the supply of LPG are provided. A stop switch for stopping the gas of the supply valve during idling, and an engine temperature sensor that does not open the supply valve unless the temperature of the diesel engine rises above a predetermined value.

[0004]

However, in the above-mentioned proposed technology, the increase in output, the saving of fuel consumption and the reduction of nitrogen oxides are insufficient.

An object of the present invention is to provide a device capable of sufficiently reducing fuel consumption and reducing nitrogen oxides by increasing the output caused by inducing LPG or LNG (liquefied natural gas).

[0006]

The means for solving the problem according to the present invention is as follows. As shown in FIGS. 1 and 2, a heating catalyst A is attached to an injection port of an LPG injection nozzle 1 and a speed controller B is attached to a speed sensor C.
LPG supply valve 2 only when the vehicle speed is higher than the set value
And the heating catalyst A is turned on only when the engine temperature sensor 6 is turned on.

[0007]

In the above means for solving the above problems, when LPG having an estimated 120 octane is injected into a diesel engine, the gas is directly heated to the nichrome wire heater A3 of the heating catalyst A, so that the effect of promoting vaporization is high and the nichrome wire coil When the gas passes through the space, the gas is agitated and is uniformly vaporized.

When the LPG is injected into the diesel engine, the exhaust gas has a peculiar smell due to the smell originally attached to the LPG. However, when the heater A3 is energized, the smell can be removed, and the combustion of the LPG can be eliminated. The condition can be improved, and generation of nitrogen oxides can be suppressed. ,

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in FIGS.

[0010] The device of the present invention shown in the drawing is configured to inject LPG (or LNG, hereinafter simply referred to as LPG in the present invention) whose nozzle diameter can be adjusted into an air intake of an intake manifold M of a diesel engine G. Nozzle 1
The solenoid-operated supply valve 2 and the pressure regulator 3 for stopping the supply of LPG are connected to the cylinder 4 for filling LPG and the L
A stop switch 5 provided between the PG injection nozzles 1 to stop the gas of the electromagnetic supply valve 2 during idling; and an engine temperature at which the electromagnetic supply valve 2 is not opened unless the temperature of the diesel engine rises to 50 degrees Celsius or more. A sensor (thermostat) 6 is provided.

A heating catalyst A is mounted on the injection port of the injection nozzle 1 and is formed of a case A having a through hole A1.
2, four nichrome wire heaters A3 are stretched, and the nichrome wire has a thickness of 1.2 mm, a resistance value of 1.6 ohms and consumes about 8 A at 12 V.

Further, a commercially available speed adjuster B is attached to a commercially available speed sensor C (attached in the middle of a speed meter cable).
(The speed can be set arbitrarily) and the vehicle speed is 20-8
The supply valve 2 is opened only when the set value is equal to or greater than 0 km / h, and the heating catalyst A is turned ON only when the temperature sensor 6 is turned ON.

In the figure, 8 is an accelerator petal, 11 is a battery, and D is a power relay.

The LPG injection nozzle 1 capable of adjusting the injection amount is a 2,000 cc class diesel engine having an inner diameter of 1.5.
The pressure is adjusted to about 0 mm (0.4 kg / h), and the LPG adjusted to about 1.5 kg / square cm by the pressure regulator 3 is taken out of the cylinder 4 from the electromagnetic supply valve 2.

The electromagnetic supply valve 2 is not grounded unless the temperature of the engine reaches 50 ° C. or more by the temperature sensor 6 and the vehicle speed does not reach the set value of 20 to 80 km / h by the speed regulator B. The stop valve 5 attached to the accelerator pedal 8 causes the solenoid-operated supply valve 2 to stop operating at a low speed and stop the gas.

The diesel engine has an estimated L of 120 octane.
When the PG is injected, the gas is directly heated by the nichrome wire heater A3 of the heating catalyst A, so that the effect of promoting the vaporization is high. When the gas passes between the nichrome wire coils, the gas is stirred and the vaporization is evenly promoted.

The results of the LPG use effect test using the actual vehicle (Mitsubishi Pajero 2400 Diesel Turbo 1991) were as follows.

(1) Improving fuel efficiency Before LPG injection: 14.2 km / l After LPG injection: 22.8 km / l After LPG injection + energization of heater (heating catalyst): 23.7 k
m / l (2) Improvement of acceleration time (from 40 km / h to 100 km / h)
h) Before LPG injection: 16.1 seconds After LPG injection: 14.3 seconds After LPG injection + heater energization: 13.8 seconds (3) Nitrogen oxide When LPG is injected into the diesel engine, it is originally attached to LPG. The exhaust gas has a peculiar smell due to the bad smell. However, when the heater is turned on, the smell can be removed, the combustion state of LPG can be improved, and the generation of nitrogen oxides can be suppressed.

(4) Safety It is not necessary to supply LPG at the time of starting or retreating the engine, but in the present invention, LP is supplied even when the accelerator is depressed at such time.
G is not supplied, preventing unexpected knocking and saving LPG. Even when involved in a traffic accident such as a rear-end collision, the car does not move, so the supply valve does not open and it is safe.

It should be noted that the present invention is not limited to the above-described embodiment, and it goes without saying that many modifications and changes can be made to the above-described embodiment within the scope of the present invention.

[0021]

As is clear from the above description, according to the present invention, the heating catalyst is attached to the injection port of the injection nozzle, and the speed regulator is connected to the speed sensor. The supply valve is opened, and the heating catalyst is turned on only when the engine temperature sensor is turned on.

Therefore, in the present invention, fuel efficiency is improved, acceleration time is improved, nitrogen oxides are reduced, and the vehicle is involved in a traffic accident such as a collision, as compared with the conventional configuration in which only LPG is injected. There is an excellent effect that the safety at the time of improvement is also improved.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention.

FIG. 2 is a perspective view of the same heating catalyst device.

[Explanation of symbols]

 Reference Signs List 1 injection nozzle 2 electromagnetic supply valve 3 pressure regulator 4 cylinder 5 stop switch 6 temperature sensor A heating catalyst B speed regulator C speed sensor G diesel engine M intake manifold

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location F02M 31/12 311 F02M 31/12 311N

Claims (1)

(57) [Scope of request for utility model registration] To claim 1. A diesel engine intake manifold air intakes, jetting fitted with a nozzle that can be adjusted in the nozzle diameter, the supply valve to supply stop of LPG or LNG and a pressure regulator, to fill the LPG or LNG In a device provided between a cylinder and the injection nozzle, a stop switch for stopping gas of the supply valve during idling, and an engine temperature sensor that does not open the supply valve unless the diesel engine temperature rises above a predetermined value. , before Symbol
Jetting fitted with a heated catalyst device to the injection port of the nozzle, by connecting the speed regulator to the speed sensor and configured to open the supply valve only when the vehicle speed is larger than a predetermined value, and when the engine temperature sensor is ON An apparatus for increasing the output of a diesel engine, saving fuel consumption, and reducing black smoke by injecting LPG or the like, wherein the heating catalyst is turned ON only.