JPS6079155A - Fuel cooling device for car - Google Patents

Abstract

PURPOSE:To facilitate the fitting of a device by providing a motor blower and a car body side duct and an engine side duct forming a blower duct and facing the discharge port of the car body side duct and the intake port of the engine side duct together in the specific direction. CONSTITUTION:A motor blower 6 drives a fan via a motor 6', sucks the outside air through an intake port 6a, and blows through a discharge port 6b. It is fitted to the side wall 2' in an engine room via a bracket 7, a car body side duct 8 is fitted to a radiator shroud 4' via a bracket 9 with its intake port 8a connected to the discharge port 6a. An engine side duct 10 is fitted to an engine 3 via a bracket 11, its intake port 10a is faced to the discharge port 8b of the duct 8 at a distance, and its blowout port 10b is faced to a fuel injector 5. The discharge port 8b and the intake port 10a are faced together in the direction at a right angle to the rolling direction of the engine.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a fuel cooling device for an automobile, and more particularly, to a technology for preventing fuel in a fuel supply device from vaporizing due to engine heat radiation after the engine is stopped. . .

(Prior art) When the engine is heated due to long-term driving, etc., after the engine is stopped, the fuel in the fuel supply device may vaporize due to heat radiation from the engine, making it impossible to restart the engine after the engine has stopped. Ta.

For this reason, as a cooling device for the fuel in the fuel supply system after the engine has stopped, outside air is blown into the fuel supply system by forced air. The structure was such that outside air was blown from the motor blower to the fuel supply system via a ventilation duct.

However, with this conventional structure, the motor blower is attached to the engine itself, so it is necessary to secure enough space around the engine to install the motor blower, and if space is not available, it is impossible to install the motor blower. On the other hand, if this motor blower is installed as a priority, there will be a problem in that the installation of engine accessories will be limited in space.

Furthermore, since the motor blower is directly attached to the engine, it is constantly exposed to heat and vibrations from the engine, which shortens the life of the motor.

(Object of the Invention) The present invention has been made to solve the problems of the conventional art. To provide a fuel cooling device for a motor vehicle which is not adversely affected by heat and vibration from a motor blower and can surely blow air from a motor blower to a fuel supply device.

(Structure of the Invention) That is, in order to achieve this object, the fuel cooling device for an automobile of the present invention includes: a motor blower attached to a vehicle body; a vehicle body side duct connected to the engine; an air blowing duct attached to the engine, the intake port facing the discharge port of the vehicle body side duct with a distance maintained therebetween, and the air outlet facing the engine fuel supply device; With side duct;
The discharge port of the vehicle body side duct and the intake port of the engine side duct are arranged to face each other in a direction other than the rolling direction of the engine.

(Effects of the Invention) Therefore, according to the fuel supply system of the present invention configured as described above, the motor blower is not attached to the engine but to the vehicle body, so the space for attaching engine accessories is limited. Moreover, this motor blower can be freely installed in a vacant space in the engine room, and is not subject to any space restrictions, and conversely, the installation of other parts does not impose any space restrictions.

In addition, since the motor blower is attached to the vehicle body, it is not directly exposed to heat or vibration from the engine, and the air blower duct is divided into a body-side duct and an engine-side duct, so there is no direct heat or vibration from the engine. There is no indirect heat transfer or vibration transfer, and the installation of the motorized blower stabilizes the condition while preventing the adverse effects of heat and vibration.

In addition, since the air duct t is divided into a car body side duct and an engine side duct, even if the engine side duct vibrates due to engine vibration, it will not interfere with the car body side duct, preventing damage to the air duct. After the engine is stopped, the discharge port of the vehicle body side duct and the intake port of the engine side duct are opposed to each other, so the air from the motor blower can be inherited from the vehicle body side duct to the engine side duct. Air from the motor blower can still be reliably blown externally to the fuel supply device to exert its cooling effect.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

1 to 3 show a fuel cooling system for a 7-well injector as a fuel supply system according to an embodiment of the present invention.

In the figure, reference numeral 1 denotes a vehicle body, and an engine 3, a radiator 4, and other 4-engine accessory parts are arranged in an engine room 2 at the front. In addition, 5 is a fuel injector 7 which is a fuel supply device and injects fuel pressurized by a fuel pump.

Next, 1 and 6 are motor blowers, and the internal fan is connected to motor 6.
', the outside air sucked in from the intake port 6a is blown from the discharge port 6b, and is attached to the side wall 2 in the engine room 2 by a bracket 7.

Reference numeral 8 designates a vehicle side duct, which has an inlet 8a at one end connected to the outlet 6a of the motor blower 6, and is attached to the radiator shroud l'4 by brackets 9, 9 protruding from both left and right sides.

Reference numeral 10 denotes an engine side duct, which is attached to the engine 3 by a bracket 11, and has its intake port 10a facing the discharge port 8b of the vehicle body side duct 8 with a space maintained therebetween, and its discharge port 10b is connected to the fuel injector 5. towards.

The unit side duct 8 and the engine side duct F10 constitute a series of ventilation ducts F. In this case, the discharge port 8b of the vehicle body side duct V8 and the intake port 10a of the engine side duct 10 are connected to the engine 3. They are made to face each other in a direction perpendicular to the rolling direction (arrow n direction), and the opposing distance is
Minimum distance between the two so that they do not interfere (10 openings in the example)
and the intake port 10 of the engine side duct) 10.
The diameter of a is made larger than that of the discharge port 8b of the vehicle body side duct 8, so that there is no loss in receiving the air.

Next, Figure 4 shows the vehicle body side duct 8 and the engine side duct) 10.
In this case, the discharge port 8b of the vehicle body side duct 8 and the intake port 1 of the engine side duct 10 are shown.
0a are facing each other, and a snake 111i12 is passed between the two, which completely prevents air leakage even though the air duct is divided into the vehicle body side duct 8 and the engine side duct 10. This is a preferred embodiment in that it ends with .

Therefore, when the engine is overheated due to running on a hill in a low gear, etc., the heating of the fuel injector 5 caused by the engine heat radiation 1 after the engine is stopped will be reduced.
In the cooling system of this embodiment, after the outside air sucked in by the motor pro 76 is blown into the vehicle body side duct 8, it is taken over from the vehicle body side duct 8 to the engine side duct 10, and then is directed from the air outlet 10b to the seven fuel injector 5. It cools the fuel while spraying it and prevents it from vaporizing.

In this case, since the motor pro 76 is attached to the vehicle body 1), the presence of the motor blower 6 does not restrict the installation space for engine accessories.
Furthermore, the installation space for the motor blower 6 is not subject to any restrictions.

In addition, since the motor blower 6 is attached to the unit 1 and the blower duct is divided into the vehicle body side duct 8 and the engine side duct 10, heat and vibration from the engine 3 are not directly or indirectly transmitted to the motor blower 6. There is no such thing as a ripple effect.

The embodiments of the present invention have been described above with reference to the drawings, but
The specific configuration of the present invention is not limited to the first embodiment described above.

7- For example, a motor blower can be installed anywhere on the vehicle body, and in short, it does not need to be installed directly on the engine.

Further, regarding the mounting position of the vehicle body side duct, although it is mounted on the radiator shroud 4 in the embodiment, it is not limited to this, and the mounting position of the motor blower will be determined as appropriate depending on the position.

Furthermore, it is preferable that the spacing between the discharge port of the vehicle body side duct and the intake port of the engine side duct be as close as possible to avoid interference between the two, and that the opposing direction be perpendicular to the rolling direction of the engine. As shown in FIG. Since the rolling direction (direction of arrow n) is perpendicular to the opposing direction, there is no interference between the ducts 8 and 10 due to the rolling of the engine 3, and the opposing distance can be brought closer to prevent air leakage. It is.

Incidentally, this opposing direction is the rolling direction tool 8- of the engine. If it is outside, it is not necessarily limited to the orthogonal direction.

Further, the operation control of the motor blower 1 may be performed by temperature control using a temperature sensor, by timer control for operating the engine for a certain period of time after the engine is stopped, by a combination of temperature control and timer control, or by manual control.

Further, in the embodiment, a fuel injector was used as an example of the fuel supply device, but a carburetor may also be used.
It is not limited to the user injector.

[Brief explanation of the drawing]

FIG. 1 is an overall perspective view of an automobile fuel cooling device which is an embodiment of the present invention, FIG. 2 is a plan view of the fuel cooling device, and FIG.
The figure is a sectional view taken along the line AA in FIG. 2, and FIG. 4 is a perspective view showing another example of the connection structure between the vehicle body side duct and the engine side duct. 1... Vehicle body, 3... Engine, 5... Fuel injector, 6... Motor blower, 61)...
Discharge port, 8...Vehicle side duct, 8a...Intake port, 8
1]...Discharge port, 10...Engine side duct, 10
a...Intake port, 10b...Blowout port. Patent Applicant: Nissan Shatai Co., Ltd. Sub-Attorney Hiroyuki Fujiwara 11- Written Amendment to Lis Procedures (Spontaneous) November 22, 1981 1. Case Description 1989 Patent Application No. 169739 2. Title of Invention: For automobiles. Fuel cooling system 3, relationship with the case of the person making the amendment Patent applicant name: Nissan Shatai Co., Ltd. 4, agent address: 1-5-19-807 No. 6, Shimo-meguro, Meguro-ku, Tokyo, invention of the specification of the contents of the amendment The detailed description column has been amended as follows. In the 11th line of page 6 of the specification, the phrase “at the discharge port 6a” is changed to 1.
"to the discharge hole 6b". -2ζA-

Claims (1)

[Claims] ■) A motor blower attached to the vehicle body; A vehicle body side duct, which is a blower duct attached to the vehicle body and whose intake port is connected to the discharge port of the motor blower; A blower duct attached to the engine, whose intake port is connected to the vehicle body. an engine-side duct which faces the discharge port of the side duct with a distance therebetween and has its blow-off port directed toward the fuel supply device of the engine; A fuel cooling device for an automobile, characterized in that the devices are opposed to each other in a direction other than the rolling direction of the engine.