JPH022953Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a Wankel-type supercharger whose function as a supercharger can be easily selected and adjusted.

A supercharger is driven by the engine's crankshaft via a belt, gears, etc., and pre-compresses the air the engine takes in, increasing the engine's air consumption and thereby increasing its output. On the other hand, on the other hand, when the supercharger is not needed, such as when starting the engine, when sufficient engine braking is required, or when unloading a truck, etc. There is also.

Therefore, in the past, in order to be able to select the function as a supercharger as appropriate,
An electromagnetic clutch or the like was installed between the engine's crankshaft and rotating rotor to disconnect and connect as necessary.

However, when disconnecting and connecting the electromagnetic clutch, etc., the load is suddenly applied to and disconnected from the engine, which causes problems in that the engine is likely to rattle and the intervening belts are likely to break.

This invention was made based on such circumstances, and its purpose is to provide a Wankel type supercharger whose function as a supercharger can be selected and adjusted without providing an electromagnetic clutch.

The purpose of this is to transform the housing into an epitrochoid cylinder in a Wankel supercharger in which the suction stroke and exhaust stroke are performed simultaneously in opposite states in each pair of pump chambers when a triangular rotating rotor rotates within the housing. The pair of pump chambers are provided inside the epitrochoid cylinder, and an intake hole and an exhaust hole are formed for each of the pump chambers in the epitrochoid cylinder, and the epitrochoid cylinder A pair of valve cases are attached to the outer wall surface of the valve case, and an intake chamber communicating with the intake hole of the one pump chamber and an exhaust chamber communicating with the exhaust hole of the other pump chamber are provided in the valve case, and the intake chamber and the exhaust chamber communicate with the exhaust hole of the other pump chamber. This was achieved by a Wankel supercharger that communicates with the exhaust chamber and is equipped with a flow control valve in this communication section.

Hereinafter, embodiments of this invention will be described based on the drawings.

The Wankel type supercharger 11 includes a housing 1 consisting of an epitrochoid tube 13a and a pair of lids 13b, 13b as main components.
3, a rotating shaft 15 pivotally supported by these lids 13b, 13b, and a triangular internal rotating rotor 17 that is fitted onto the rotating shaft 15 in an eccentric state and slides on the inner wall surface of the epitrochoid tube 13a. Equipped with. When the triangular internal rotor 17 rotates within the housing 13, a suction stroke and an exhaust stroke are simultaneously performed in opposite states in each of the pair of pump chambers 19a and 19b. Two sets of intake holes 21, 21 and an exhaust hole 2 are provided on the wall surface of the epitrochoid cylinder 13a so that each of the pair of pump chambers 19a, 19b can be used independently.
3 and 23 are provided. Note that the intake holes 21, 21 or the exhaust holes 23, 23 are close to the exhaust holes 23, 23 or the intake holes 21, 21 of the other pump chambers 19a, 19b.

Further, a gear 25 is provided at one end of the rotating shaft 15 protruding from the lid 13b. Rotating shaft 15
The rotation of the crankshaft 27 of the engine E is transmitted and received via the gear 25.

Note that 29 is a counterweight, which adjusts the centrifugal force applied to the rotating shaft 15.

The above structure is similar to a conventional Wankel supercharger.

The valve cases 33, 3 are attached to the outer wall surface of the epitrochoid tube 13a by mounting screws 31, 31...
3 is screwed on. This valve case 33,3
3 are adjacent pump chambers 19a, 19b
The intake hole 21 and the exhaust hole 23 are covered, and therein is an intake chamber 35 that communicates with the intake hole 21.
and an exhaust chamber 37 communicating with the exhaust hole 23. The intake chambers 35, 35 and the exhaust chambers 37, 37 communicate with each other through communication holes 39, 39, and flow control valves 41, 41 are provided in the communication holes 39, 39. In addition, 43 is an intake pipe for inhaling air, and 45 is an exhaust pipe for discharging supercharged air, and each valve case 33
(only one side is shown).

Next, the effect of this invention will be explained.

First, the exhaust pipe 4 of both valve cases 33, 33
5 and 45 are connected to the intake manifold of the engine, and the intake pipes 43 and 43 are connected to an air cleaner (not shown).

Now, as shown in Figs.
When 7 is rotated, each of the pair of pump chambers 19a, 19
Air supercharging is performed independently at b, and the supercharged air is fed into the engine cylinders.

On the other hand, when the triangular internal rotor 17 is rotated with both flow rate control valves 41, 41 fully open, each of the pair of pump chambers 19a, 19b performs a suction stroke and an exhaust stroke simultaneously in opposite states, and one The pressurized air supercharged in the pump chambers 19a, 19b becomes intake air in the other pump chambers 19a, 19b. Therefore, compression and expansion of the air are repeated between each of the pair of pump chambers 19a, 19b, and therefore, the exhausted air is sent into the cylinders of the engine without being supercharged. That is, in this state, it does not function as a supercharger.

Further, the degree of supercharging can be controlled by appropriately opening and closing the flow rate regulating valves 41, 41.

In addition, in this invention, a pair of pump chambers 19a, 1
Wankel supercharger 1 with 9b
1 was used, however, a pair of superchargers each having one pump chamber may be used by setting the suction stroke and the exhaust stroke to be performed simultaneously in opposite states.

The Wankel supercharger according to this invention is a Wankel supercharger in which a suction stroke and an exhaust stroke are performed simultaneously in opposite states in each of a pair of pump chambers when a triangular rotating rotor rotates in a housing. , the housing is constituted by an epitrochoid tube, and the pair of pump chambers are provided inside the epitrochoid tube, and an intake hole and an exhaust hole are formed in the epitrochoid tube for each of the pump chambers. and a pair of valve cases are attached to the outer wall surface of the epitrochoid tube, and an intake chamber communicating with the intake hole of the one pump chamber and an exhaust hole communicating with the exhaust hole of the other pump chamber are provided in the valve case. A Wankel supercharger is characterized in that a chamber is provided, the intake chamber and the exhaust chamber communicate with each other, and a flow rate adjustment valve is installed in this communication section. By operating the , the degree of function as a supercharger can be easily adjusted.

This eliminates the need for electromagnetic clutches, which were required in the past, and as a result, the inconveniences caused by electromagnetic clutches, such as (1) the engine tends to rattle, and (2) the intervening belt tends to break, are eliminated. Furthermore, even if an electromagnetic clutch is installed between the Wankel supercharger of this invention and the engine crankshaft, the load on the engine can be gradually reduced by operating the flow control valve when disconnecting or connecting the clutch. By increasing the size, the above-mentioned disadvantages due to the conventional electromagnetic clutch can be overcome.

In particular, in the case of the Wankel supercharger according to this invention, the function of the supercharger can be adjusted simply by operating the flow rate adjustment valve, so it has good discharge efficiency of compressed fluid and can easily handle large amounts of compressed fluid. The supercharger is capable of discharging a large amount of air (inhalation, compression, and exhaust are performed six times each in one revolution of the triangular rotating rotor), so it can be used quickly when the supercharger's function is not required. It is something.

[Brief explanation of the drawing]

The drawings show an embodiment of the Wankel type supercharger according to the present invention, and FIG. 1 is a partially cutaway side view, and FIG. 2 is a sectional view taken along the line -- in FIG. 1. 11... Wankel super charger, 1
3... Housing, 17... Triangular rotating rotor, 1
9a, 19b...Pump chamber, 21...Intake hole, 2
3...Exhaust hole, 33...Valve case, 39...
Communication hole, 41...Flow control valve.

Claims (1)

[Claims for Utility Model Registration] In a Wankel supercharger in which a suction stroke and an exhaust stroke are performed simultaneously in opposite states in each of a pair of pump chambers when a triangular rotating rotor rotates inside the housing, It is constructed of an epitrochoid cylinder, and the pair of pump chambers are provided inside the epitrochoid cylinder, and an intake hole and an exhaust hole are formed in the epitrochoid cylinder for each of the pump chambers, and A pair of valve cases are attached to the outer wall surface of the epitrochoid cylinder, and an intake chamber communicating with the intake hole of the one pump chamber and an exhaust chamber communicating with the exhaust hole of the other pump chamber are provided in the valve case, A Wankel supercharger characterized in that the intake chamber and the exhaust chamber are communicated with each other, and a flow rate regulating valve is installed in this communication section.