JPH0139862Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is intended for engines such as marine diesel engines, and is used to cool engine cooling water (fresh water) with seawater in such engines. This paper relates to a seawater pipe support structure for a fresh water cooler.

(Prior Art) In general, structures for discharging seawater after cooling fresh water in a fresh water cooler can be roughly divided into two types: those that use a mixing elbow, and those that do not use a mixing elbow. This mixing elbow is for discharging the seawater from the fresh water cooler by mixing it with the exhaust gas.When using the mixing elbow, the engine is sold with the seawater discharge passage completed, so the user No special changes will be made to the seawater passage. On the other hand, when the mixing elbow is not used, engines are sold with only a short outlet hose connected to the outlet of the fresh water cooler, and the user connects a suitable seawater drain hose to the outlet hose.

(Problem that the invention aims to solve) However, in general, the fresh water cooler is often installed adjacent to the engine body (cylinder block, etc.) together with the exhaust manifold, intercooler, supercharger, etc., and is installed near the outlet hose. It is difficult to secure sufficient space for Also, since the conventional structure does not have a suitable mounting seat, it is not possible to use metal fittings or the like to support the outlet hose. Therefore, in the conventional structure, when the mixing elbow is not used as mentioned above, that is, when the user connects the seawater outlet hose to another hose, the outlet hose may be bent excessively and used in an unstable state. As a result, problems such as damage to the hose may occur.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides a fresh water cooler, an exhaust manifold, and an exhaust bend adjacent to the engine body, and a steady rest metal fitting on the exhaust manifold and the exhaust bend. A mounting seat is provided, a seawater pipe is connected to the seawater outlet of the fresh water cooler, and the seawater pipe is supported by a steadying fixture fixed to the mounting seat with the outlet end protruding toward the side opposite to the engine body. It is said that

(Function) According to the above configuration, the seawater pipe can be supported in a stable state and in a bent shape without strain by the steady rest metal fittings fixed to the exhaust manifold and the exhaust bend. Also, the outlet end of the seawater pipe protrudes to the side opposite to the engine body, so
When connecting another hose on the user side, there is no need to perform the work in a narrow space near the engine body, making the connection work easier.

(Example) In FIG. 1, which is a schematic side view, an engine body 1 consisting of a cylinder block, cylinder head, etc.
For example, 0 has a fly hole housing 11 at the rear end.
A supercharger 12 is disposed generally above the housing 11 and at the rear of the engine body 10, and an alternator 13 is disposed near the top on the opposite side (front side). Between the supercharger 12 and the alternator 13, an exhaust manifold 15 and an intercooler 16 are provided on the upper side of the engine body 10, extending parallel to the crankshaft 17 (only the central axis is shown). A fresh water cooler 20 is provided along the upper end surface. An intake air duct 21 of the intercooler 16 extends generally above the supercharger 12 and behind the fresh water cooler 20, and has an outlet connected to the rear upper end of the intercooler 16. A discharge air duct 22 of the intercooler 16 extends along the front and upper surface of the air duct 21, and has an inlet connected to the front upper end of the intercooler 16.

At the rear end of the fresh water cooler 20 are seawater pipes 26, 2.
7 is connected. The seawater pipes 26 and 27 are arranged in a vertical positional relationship in a narrow space below the air ducts 21 and 22. The lower seawater pipe 27 is for supplying seawater to the fresh water cooler 20, and the inlet (not shown) is connected to the seawater outlet of the oil cooler. The upper seawater pipe 26 is for discharging seawater from the fresh water cooler 20, and is composed of a rubber hose 28 connected to the fresh water cooler 20 and a metal joint pipe 29 connected to the tip of the hose 28. It is supported by a steady rest metal fitting 30 as described later.

Partial cutaway of Fig. 1 - 2nd schematic diagram in the direction of arrows
As shown in the figure, an intake manifold 14 is provided on the opposite side of the exhaust manifold 15 across the upper part (cylinder head) of the engine body 10. The compressor 31 of the supercharger 12 is located almost directly behind the engine body 10, and the turbine 32 of the supercharger 12 is located between the exhaust manifold 15 and the fresh water cooler 20.
It is located almost directly behind. An exhaust bend 25 is connected to the turbine 32 from the outside (the side opposite to the compressor 31). The exhaust bend 25 is curved upward, and its upper end is connected to an exhaust pipe (not shown).

Fig. 3 is an enlarged schematic diagram of Fig. 2, and Fig. 4 is an enlarged schematic diagram of Fig. 3.
It is a partial schematic view of the figure. As shown in these figures, a mounting seat 35 is provided on the outer surface of the exhaust bend 25.
(Boss) is provided integrally. As is clear from FIG. 3, the mounting seat 35 is provided on the outermost surface (on the opposite side to the turbine 32) of the lower half of the portion of the exhaust bend 25 that extends obliquely upward, and has two screw holes 36. It is equipped with As is clear from Figure 4,
The exhaust manifold 15 also includes a mounting seat 37 on the outer surface of the rear end, and two screw holes 38 are provided in the mounting seat 37.

The steady rest fitting 30 is a bent piece of plate material, and has portions 40, 41, 42 bent at right angles to each other.
and ribs 43. The portion 40 extends in the longitudinal direction of the engine (in a direction parallel to the crankshaft) and is fixed to the mounting seat 35 by a bolt 45 that is threaded into the screw hole 36. Part 41 is inside from the front end of part 40 (exhaust manifold 15 side)
, and a screw hole 46 is provided in the part near the part 40.
It is equipped with Portion 42 extends forward from the inner end of portion 41 and is fixed to mounting seat 37 by a bolt 47 that is threaded into screw hole 38 .

As shown in FIG. 4, the rubber hose 28 is curved obliquely downward from the rear end of the fresh water cooler 20 toward the outside, and passes above the portion 42. The entire joint pipe 29 is straight, with the inlet side inserted into the hose 28 and the outlet side end inserted into the hose 28.
It protrudes outward and diagonally downward. A band 48 is wrapped around the middle part of the pipe 29 (the part protruding from the hose 28). The end of the band 48 is fixed to the portion 41 via a spacer 50 by a bolt 49 that is screwed into the screw hole 46, and thereby the entire seawater pipe 26 is stably supported by the steady rest fitting 30. There is. Although not shown, an appropriate drainage pipe is connected to the pipe 29 on the user side depending on the installation conditions of each engine.

(Function) Exhaust gas from the engine enters the turbine 32 of the supercharger 12 from the exhaust manifold 15 through the exhaust pipe 34 (Fig. 1), drives the supercharger 12, and is then discharged from the exhaust bend 25 to the exhaust pipe. Ru. Supercharger 12
The air sucked into the compressor 31 is pressurized by the compressor 31 and then transferred to the air duct 2 in FIG.
1 flows into the intercooler 16, is cooled by cooling water in the intercooler 16, and is supplied from the air duct 22 to the combustion chamber via the intake manifold 14 shown in FIG. The inlet side seawater pipe 27 in FIG. 1 is provided with a seawater pump (not shown).
Seawater is supplied after passing through the intercooler 16, engine oil cooler, and clutch oil cooler. The seawater supplied from the seawater pipe 27 to the freshwater cooler 20 cools the freshwater (cooling water) in the freshwater cooler 20, and then is sent to the seawater pipe via the seawater pipe 26.

(Effect of the invention) As explained above, according to the invention, the exhaust manifold 15 and the exhaust bend 25 are provided with the mounting seats 35 and 37, and the seawater pipe 26 is connected by the steady rest fittings 30 attached to the mounting seats 35 and 37. Since it is supported, the seawater pipe 26 can be curved into a predetermined shape and fixed in a stable state before shipping. Therefore, even if a separate drain pipe is connected to the seawater pipe 26 on the user side, the seawater pipe 26
is not forced to curve. Furthermore, the seawater pipe 26 does not vibrate abnormally during operation. Therefore, damage to the seawater pipe 26 can be reliably prevented. Furthermore, since the seawater pipe 26 protrudes laterally, it is possible to easily connect another drain pipe on the user's side.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view of the embodiment of the present invention, Fig. 2 is a partially cutaway schematic view of Fig.
FIG. 4 is a schematic diagram of an enlarged portion of the figure, and FIG. 4 is a schematic diagram of a portion viewed from the − arrow in FIG. 10... Engine body, 15... Exhaust manifold, 20... Fresh water cooler, 25... Exhaust bend, 26... Sea water pipe, 30... Steady rest fitting, 3
5, 37...Mounting seat.

Claims (1)

[Scope of utility model registration request] A fresh water cooler, an exhaust manifold, and an exhaust bend are installed adjacent to the engine body, a mounting seat for a steady rest is provided on the exhaust manifold and the exhaust bend, a seawater pipe is connected to the seawater outlet of the fresh water cooler, and it is fixed to the above mounting seat. A seawater pipe support structure for a fresh water cooler for an engine, characterized in that the seawater pipe is supported with its outlet end protruding toward the opposite side of the engine body using a steady rest.