JPS6095133A - Inertia supercharger - Google Patents

Abstract

PURPOSE:To have a light and simple variable chamber by making it in bellows construction, and by allowing its volume to change according to the operating condition of the engine. CONSTITUTION:With rotation of engine 1, a controller 14 shall calculate the set volume Vop on the basis of the number of revolutions sensed by a rotary sensor 13 and the volume of a variable chamber 5 sensed by a volume sensor 12. Inlet and outlet of a solenoid valve 11 are opened and closed according to the result of said calculation so as to elevate or sink a piston 8 in the cylinder 10, whereby the volume of the variable chamber 5 is changed according to the number of engine revolutions to serve for inertia supercharging in compliance with the current number of revolutions. The variable chamber 5 is formed in bellows from rubber etc. and fitted in communication with the suction manifold 2.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an inertial supercharging device having a variable volume chamber (ft).

The conventionally known inertia supercharging device, which is a means of increasing engine output, is a device with a constant volume designed to perform inertia supercharging at the engine's normal rotational speed. It is installed in communication with the intake system leading to the engine, and naturally, inertial supercharging is not performed at rotation speeds other than the set rotation speed.

In order to improve this, for example, as disclosed in Japanese Patent Application Laid-Open No. 55-81821, a constant volume chuck is connected to the intake manifold of the engine through a valve, and 9'P' is opened at normal rotational speeds to open the above chamber. It is possible to perform inertia supercharging using the accounting volume of the intake manifold, and for example, at maximum rotation speed, the valve is closed and inertia supercharging is performed using only the volume of the intake manifold itself, but the lossy supercharging occurs when the rotation speed is outside the normal rotation speed. The idea is to continuously perform ilt supercharging over the entire engine speed range with only one additional point in the engine speed.
7. far cry.

In addition, as in Japanese Utility Model Application Publication No. 54-97514, the intake manifold is made into a cylindrical body with a cross section of 1/4 circle, a control panel is rotatably installed inside the manifold, and the control panel is rotated according to the engine speed. This allows for inertia supercharging, but it is not only mechanically complicated, but also has the disadvantage that the inertia effect is small due to leakage of intake air from between the control panel and the intake manifold tonneau.

In history, it is fitted with an intake noise reduction device, but JP-A-58-9395
As described in Publication No. 5 (Specifically, a piston is fitted into a cylinder communicating with a bright intake system to form a chamber 'i7, and a rack connected to the piston is operated by a pinion, while the engine speed is maintained at full speed. The sensor detects all valves, and based on this, the controller calculates the optimum volume of the chamber ``t''.Based on this, the servo motor is driven to rotate the 11-binion and move the piston forward and backward. In this example, the amount of M is large and the 4-hour construction is complicated, making it especially difficult to install in a small car.

In view of the above, it is an object of the present invention to provide a simple and lightweight continuous inertia supercharging device manufactured by R4, in which a bellows variable chamber is connected to the intake manifold of the engine, and the chamber is connected to the rotational speed of the engine. and signals that change accordingly, such as lubricating oil pressure and air pressure that is expanded and contracted by negative intake pressure.

To explain this in detail with reference to the drawings, 1 is an engine, 2 is a split-type intake manifold, 3 is an air cleaner, and 4 is an intake pipe. -5 is a variable chamber installed with its lower end communicating with the intake manifold, and as shown in FIG. 2, it is made of a bellows, such as rubber, and has a built-in spring 6 if necessary.

In the one shown in Figs. 1 and 2, the bellows type variable chamber 5
A piston 8 is connected to the upper plate 5a via a rod 7, and the piston 8 is fitted into a cylinder 10 attached to a bracket 9 directly above the chamber 5.

Reference numeral 11 denotes a solenoid valve that allows pressure fluid, such as compressed air, to enter and exit the cylinder 10 in response to a signal.

In addition, 12 is a volume sensor that detects the volume of the variable chamber 5, 13 is a rotation sensor installed near the two wheels la of the engine, and IJ-114 is a controller (
microcontroller).

The ideal variable chamber volume Vop2 is set in advance in the controller 14 according to the rotational speed of the engine as shown in FIG.

In the apparatus of the present invention shown in FIGS. 1 and 2, as the engine rotates as shown in FIG. 4, based on the rotation speed detected by the rotation sensor 13 and the volume of the variable chamber 5 detected by the volume sensor n, Controller 14 sets WftlR
Vop is calculated, and based on this, the inlet and outlet (not shown) of the solenoid valve 11 are opened and closed as shown in the block diagram of FIG. 4, and the piston 8 in the cylinder 10 is moved up and down to adjust the volume of the variable chamber 5 By changing the rotation speed as shown in FIG. 3 according to the rotation speed, it is possible to perform inertia supercharging according to the rotation speed at that time.

The embodiments shown in Figure 5 and below do not use the above-mentioned controller, sensor, etc., but are used to change the lubricating oil pressure or the intake negative pressure due to the change in the rotational speed of the engine itself, and are the same. Numbers and symbols are shown in Figure 1, 82
The one shown in Fig. 6 represents the same parts and equipment as in the example shown in the figure, and the one shown in Fig. 6 is a pipe in which the 41 hydraulic pressure of the 15V engine is introduced from the top into the cylinder 10. Since the lubricating oil pressure changes in proportion to
The variable chamber 5. can be expanded and contracted to change its volume.

In addition, the one shown in FIG. 1 has an upper plate 58 of the variable chamber 5.
't' bracket adjusted to 17) 18! The lower end of the spring 19 connected through the spring 19 is fixed, and as the intake negative pressure in the intake manifold 2 changes as the engine speed changes, the variable chamber 5 expands and contracts until it balances with the spring 19, forming a valley shape. can be changed.

In this example, the setting force (5ETFORCE) of the spring 19 is set by the adjustment bolt 18. l! Since I can be adjusted, the engine speed range in which inertia supercharging is performed can be changed.

In the example shown in Fig. 6 and Fig. 1, the relationship between the acting force on the springs 16 and 19 and the amount of expansion/contraction thereof! It is preferable that the springs 16 and 19 be non-linear springs, or two springs and three springs so as to match the curves in Figure @3 as much as possible.

As mentioned above, according to the present invention, the iJ variable chamber is of a bellows type, so the structure is simple. Can be lightweight,
Additionally, by installing a variable chamber in each intake manifold, the inertial supercharging effect is also high.

In addition, especially in the models shown in Figures 5 and 6, the variable chamber is expanded and contracted by the engine's hydraulic pressure and intake negative pressure, which change in proportion to the engine rotational speed. It is possible to obtain an inertial supercharging device that is simple and reliable.

[Brief explanation of drawings]

Fig. 1 is a plan view of an engine equipped with an embodiment of the device of the present invention, Fig. 2 is a schematic cross-sectional view of the same essential parts, Fig. 3 is a diagram of an ideal change curve of engine speed and variable chamber volume, 4 is a Glock diagram of the device shown in !!, 1, and 2, FIG. 5 is a plan view of an engine equipped with another embodiment of the present invention, FIG. 6, FIG. T rt, and FIG. 5 A Detailed cross-sectional view of parts.■＠-・Engine, 2-・Intake manifold, 5・@
e variable chamber, 6,16゜19・Φ・spring, 711
...Rod, 8...1 Piston IQ o@@Cylinder, 11-...1 Ratio magnetic valve, 12... Volume sensor,
13... Rotation sensor, 14... Controller,
18...Adjustment bolt, Patent applicant: Takeshi Yoneya, agent of Kususo Jidosha Mashishiki Company, patent attorney, Figure 1, Figure 3, Figure 4

Claims (1)

[Claims] An inertial supercharging device characterized in that it is installed in communication with a variable chamber e in the intake manifold of an engine, and the volume of the variable chamber is changed according to the operating condition of the engine.