JPS59200052A - V-type multi-cylinder internal combustion engine - Google Patents

Abstract

PURPOSE:To position a caburettor in the same level as that of intake-ports, and to prevent an intake-air system from projecting upward from an internal combustion engine, by connecting the intake-air system, upstream of the branch section thereof, to the carburettor arranged on one side of cylinders. CONSTITUTION:The front cylinder of a longitudinally arranged V-shape two cylinder type internal-combustion engine 7 is offset leftward from the widthwise center of the combustion 7, and as well the rear cylinder is offset rightward from the widthwise center. Cylinder heads 9a, 9b are formed therein with intake- air ports 10a, 10b on the cylinder narrow angle side. An intake-air pipe 12 is laid between the front and rear cylinder heads 9a, 9b, widthwise of a vehicle body, being directed from the left side thereof to the widthwise center of the vehicle, and the branch section 13 of the intake-air pipe 12 is positioned at the center point 0 of the line connecting between the intake-air ports 10a, 10b with a carburettor 14 is disposed in the intake-air pipe 12.

Description

[Detailed description of the invention]

The present invention relates to a ■type multi-cylinder engine, particularly a ■type multicylinder internal combustion engine for vehicles. Multi-cylinder internal combustion engine, crankshaft same OS width dimension w short 1
In order to achieve this, the cylinder arrangement should be V-shaped, but the angle of the cylinders should be normal due to the balance of the engine. Since it is a corner, the front dimension perpendicular to the crankshaft direction G is long. In order to improve this problem, we have developed a technique for reducing the balance of the crankbin q) by selecting the position and quality of the crankbin q) and the balance weight σ as appropriate. ) was opened, but in order to simplify the engine's air supply line, if the carburetor was placed next to the 7th cylinder, the position of the carburetor would be reversed as the cylinder angle was narrowed. Due to the high RL, it was difficult to downsize the entire engine IX. The present invention relates to an improvement of a V-type multi-cylinder internal combustion engine that overcomes these difficulties, and has six points. /:I
. Hereinafter, an embodiment of the present invention [σ] with the illustrations omitted in FIGS. 1 to 4 will be described. l is equipped with two wheels in the front W#2 and three wheels in the rear.

[This power table 6 is installed.] Yo7. : Said power table 6&'i, the cylinder angle is 90 degrees or less σ] Acute angle (this setting and the front and rear V-type two-stroke internal combustion engine 7 with the engine balance maintained, and the same internal combustion engine 7I7) crankshaft The output shaft 15 is connected to the output shaft 15, and the output of the internal combustion engine 7 is appropriately controlled through the clutch and the transmission mechanism (not shown). There is a loss of transmission to the rotation speed @ Heavy Transport 2, three-axis movement,
The car is getting smaller when running. Roughly specified @ YJ rear ■ type two-cylinder internal combustion Chichi Seki 7 rt) Opening direction σ] Cylinder 8 α G1 (Support) Seki 7 σ) 1] Direction A to the left from the same center Off-cent off-center along with the rear cylinder 8 h 1] Offcent 2 i to the right from the concentric center by A
'L, Moreover, the cylinders 8a and 8br are arranged symmetrically with respect to the O point at the 4th PXJ, and in each cylinder head 9a, 9bG, the intake air is adjusted according to the law of cylinder included angle 10α, 1, Ob. However, the exhaust bow (11 ct) and 11 b (11 ct) and 11 b (11 ct) are disposed. Roughly from the left side of the car body to the center in the width direction of the car body, the intake pipe 12 is arranged in the middle, and the intake pipe 12 is placed in the middle, and the intake pipe 12 is connected to the center of the car body in the width direction. The weir σ connecting the boats 1Qa and 10AY breaks off at the center point O, and the carburetor 14 disappears every minute and 12 minutes. In the illustrated embodiment of the 11th chamber to the 41st fork C2, as described above, the included angle of the cylinders 8α and 8b is set to a narrow angle of 90° or less σ], so that the internal angle of the rear V-made two cylinders is Engine 7
σ] It is possible to shorten the cutting dimension and make the power splitting unit 6 smaller. In the old-1 example, l.go, earth body rr from the left side of the vehicle body.
Facing the center in the J direction and pointing in the width direction of the body @ Rear nlinda hand 9a, intake battle 12 placed in the middle of 9hrt3'shi1
, II+1 intake boat lOα, line C connecting IIJ b
13 branch parts (11, 1 and 12σ) are placed at the center point O, and the -+ -r 7-letter 14 ribs are placed on the intake pipe 12, so the intake system cannot protrude downward from the handles 9α and 9h. As a result, the bonnet 5 of the body 4 was lowered to lower the construction height, resulting in superior aerodynamic characteristics. Figures 1 to 4 show diagrams σ] In the example of one song, connect f, go, intake hoard 10α, 10b7a1' to the left side of the car body from the pure center point O, and turn the intake pipe 12 fingers in the direction of the width of the claw body. Zetaga,
As shown in the figure on the 5th kl, the intake bow h2 (J a,
The same intake pipe 12 may be oriented at right angles to the center point 0 and r1 of the line connecting 1ob+n and toward the rear of the vehicle body.In such an embodiment, the intake pipe 12 is Traced mixture intake boat 10 Q,, IQ b G
This small thing that distributes it evenly is a big deal. In addition to Honkasuaki C-1V type pressure cylinder, G Komo V Sosanki @ 11 four-cylinder etc. q] Multi-cylinder q) is also used for σ]. Rin@ri body rz + RIJ It can also be used for one thing that is directed towards the posterior gyrus. In the present invention, in a V-type multi-cylinder internal combustion engine, a line connecting one intake boat and one boat is arranged in the intake boat of each cylinder. σ] An intake pipe σ] branch part is arranged in the center, and the branch part σ] upper 17 it',
Because of the inebriated one σ) that was attached to the carburetor, the carburetor was placed at approximately the same level as the intake boat, and the intake system was cut ``1 internal combustion.'' The internal combustion engine σ) has the same dimensions on the left side, and not only the vertical direction and the same dimensions (this). By shortening the power, it is possible to reduce the size of the internal combustion engine. 'ff In the Isamoto Hikaru lH, the front and rear cylinders σ] are transposed to the intake cylinders σ], and the intake pipes are branched and connected to each intake cylinder hc, and one σ] is connected to each intake pipe. Because the carburetor was damaged, the intake line was changed to a car line, and the cost was also reduced, making the furnace smaller.

[Brief explanation of drawings]

Fig. 11 is a perspective view of a self-made J tricycle equipped with a multi-cylinder internal combustion engine according to an actual example of the present invention σ), Fig. 2 is the side σ), Fig. 1, 3P and 4 are ql Example σl Ifjl
Figure 5, 4th logo σ] Horizontal… r Hirama diagram, Figure 5 61 Honmaki σ] This is a horizontal diagram illustrating another embodiment. 1... Medo tricycle, 2-... @ heavy wheel, 3... rear wheel, 4
・・・Deleted hlS rice, 5...Bon paste, 6...Power throttle, 7...V-type two-cylinder internal combustion engine after 1f, 8...
・Cylinder, 9... Cylinder head, 10... Intake boat, 11... Exhaust t-to, 12... Intake 1 pipe, 1
3...Intake pipe branch section・14...Carburetor, 15・
・Output @1゜

Claims (1)

[Claims] In a V-type multi-cylinder internal combustion engine in which the Wt air boats of each cylinder are arranged on the narrow angle side of the cylinder, the intake pipe branches g-In? in the center of the line connecting the intake boats. The branch part σ] is connected to a single carburetor on the upstream side of the cylinder.This is a IV type multi-cylinder internal combustion engine.