JPH045695Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

The present invention relates to a turbocharged engine, and more particularly to a turbocharged engine in which a fluid wheel is provided in a turbocharger for supercharging, and fluid is supplied to the fluid wheel to promote rotation of the turbocharger.

[Summary of the invention] This invention provides a turbocharger for supercharging with a fluid wheel such as a Pelton water wheel for assist, and supplies fluid to this fluid wheel to promote the rotation of the turbocharger. In an engine designed to further increase the engine speed, a retarder consisting of a generator generates power output during braking, and this generated output drives the motor, which pressurizes fluid with a pressurizing pump and pumps it into the accumulator. By accumulating pressure and supplying the accumulated fluid to the fluid wheel of the turbocharger at the time of start or acceleration, the performance of the turbocharger in these cases is increased.

[Conventional technology]

In order to improve engine performance, the amount of air supplied to the engine can be increased. For this purpose, a turbocharger is used, and by driving the turbine with engine exhaust gas, it is possible to pressurize the intake air with a compressor and supply it, resulting in supercharging. It turns out. However, turbocharging does not have much effect when the engine speed is low, and because there is a time delay, the effect of supercharging cannot be obtained sufficiently when starting suddenly, improving starting performance. The disadvantage is that it is not possible. Furthermore, by installing a turbocharger, the performance of the engine is improved, making it possible to downsize the engine. However, reducing the size of the engine by turbocharging has the disadvantage that the braking force of the engine brake becomes smaller.

[Problem that the invention attempts to solve]

In order to solve the time delay which is a disadvantage of the turbocharger, for example, an assisting Pelton water wheel may be attached to the turbocharger. By injecting pressurized oil through a nozzle into such a Pelton water wheel, it is possible to rapidly increase the rotational speed of the turbocharger at the time of starting, improving the starting and acceleration performance of the engine. It becomes like this. However, in order to perform such Pelton assist, oil must be pressurized and stored in advance by some kind of driving means. If the output of the engine is used to pressurize such oil, a contradiction arises in that the output of the engine actually decreases. The present invention was developed in view of these problems, and it does not impair engine output, but rather improves engine braking performance, while effectively utilizing the fluid wheel provided in the turbocharger. The object of the present invention is to provide a turbocharged engine that improves starting performance or acceleration performance.

[Means to solve the problem]

The present invention provides an engine in which a fluid wheel is provided in a turbocharger for supercharging, and fluid is supplied to the fluid wheel to promote the rotation of the turbocharger. The output coil is connected to a load resistor and also connected to a motor via a changeover switch, and the motor drives a pressurizing pump and the fluid pressurized by the pressurizing pump is stored. The pressure is accumulated in the means, and the accumulated fluid is supplied to the fluid wheel of the turbocharger at the time of starting or acceleration.

[Effect]

Therefore, by supplying pressurized fluid to the fluid wheel of the turbocharger at the time of starting or accelerating, it is possible to rapidly increase the rotational speed of the turbocharger and perform supercharging without delay. This makes it possible to improve performance and acceleration. Moreover, since the fluid is pressurized by the energy recovered by the retarder, which consists of a generator, during braking, the fluid is pressurized while increasing the braking force of the engine brake without impairing engine output. It becomes possible to press.

【Example】

The invention will now be explained with reference to the illustrated embodiments. FIG. 1 shows an engine 1 equipped with a retarder according to a first embodiment of the present invention, and this engine 1 is composed of, for example, a diesel engine for a truck. A flywheel housing 2 is provided on the rear side of the engine 1.
A stator case 8 of an inductor type generator, which will be described later, is attached to the upper and lower sides of the housing 2. Furthermore, a transmission 5 is arranged on the back side of the flywheel housing 2, and an engine 1
The rotational speed of the propeller shaft 6 is changed to an appropriate value and transmitted to the drive wheels via the propeller shaft 6. Next, the structure of the retarder provided in this engine 1 will be described. As shown in FIG.
Inductor magnetic poles 7 are arranged at predetermined pitches along the circumferential direction on the outer peripheral surface of the flywheel 4 fixed to the end of the flywheel 4.
is provided. The flywheel 4 provided with this magnetic pole 7 constitutes a rotor of an inductor type generator, and this generator constitutes a retarder of an automobile. Cases 8 are provided on the upper and lower sides of the housing 2, and the rotor of the inductor type generator is housed in these cases 8. As shown in FIG. 3, this stator includes a plurality of pole cores 9 arranged in the circumferential direction of the flywheel 4. The lower end of the pole core 9 faces the inductor type pole 7 via a small air gap, and the upper end is fixed to the cover plate of the case 8 via a stator yoke 10. The pole core 9 has an armature coil 11 and a field coil 1.
2 are wrapped respectively. Note that while the armature coil 11 is wound across two pole cores 9, one field coil 12 is wound around each pole core 9. The field coil 12 of the stator configured in this way is connected to the battery 14 via the controller 13 shown in FIG.
The field current is controlled by the On the other hand, the armature coil 11 is connected to a load resistor 15 shown in FIG. 2, and also to a motor 16 shown in FIG. 1 via a changeover switch (not shown). The motor 16 is adapted to be connected to an oil pump 18 via a coupling 17, as shown in FIG. This oil pump 18 is connected to an oil reservoir 19 via a suction pipe 20. Further, the oil pump 18 is connected at its discharge side to an accumulator 22 via a supply pipe 21. That is, the oil pump 18 sucks and pressurizes the oil in the reservoir 19, and stores the oil in a pressurized state in the accumulator 22. A turbocharger 23 is provided on the side of the engine 1 where the retarder is provided, and the turbocharger 23 performs supercharging. An assisting Pelton water wheel 24 is attached to this turbocharger 23. This Pelton water wheel 24 constitutes a fluid wheel. The Pelton turbine 24 is provided with an injection nozzle 25, and
This nozzle 25 is connected to the above-mentioned accumulator 22 via a supply pipe 26. Also, a solenoid valve 27 is connected to this pipe 26.
The supply of pressurized oil is controlled. Next, the operation of the retarder for this automobile configured as described above will be explained. For example, when a car equipped with this retarder goes down a long slope, a retarder switch (not shown) installed in the driver's seat is turned on. Then, the controller 13 shown in FIG.
is activated, and the field coil 12 of the stator of the inductor type generator is connected from the battery 14 via the controller 13.
A field current flows through, and this field coil 12 is excited. When the field coil 12 is excited in this way, as shown in FIG. The paired pole cores 9 are magnetized to have different polarities. Therefore, at a certain moment, a magnetic circuit 35 as shown by the dotted line in FIG. 3 is formed, and when the flywheel 4 rotates and the inductor magnetic pole 7 moves by an angle corresponding to the pitch of the pole core 9 ,
A magnetic circuit 36 as shown by the chain line in FIG. 3 is formed. The magnetic fluxes passing through these magnetic circuits 35 and 36 both interlink with the armature coil 11, and the two
The directions of the magnetic fluxes passing through the two magnetic circuits 35 and 36 are reversed. Therefore, due to this change in magnetic flux, an electromotive force is induced in the armature coil 11, and this inductor type generator generates electricity. This means that the engine 1 or the vehicle drives the flywheel 4, and the work done from the outside at this time is absorbed as braking force. Therefore, the vehicle receives a braking force and is decelerated by the power generated by the inductor type generator. The generated output at this time is consumed by the load resistor 15 shown in FIGS. 1 and 2. Furthermore, since the armature coil 11 of the inductor type generator constituting the retarder is connected to the motor 16 shown in FIG. 1 via a changeover switch (not shown), by switching this changeover switch, , it becomes possible to drive the motor 16 during braking. And the motor 16 has a coupling 17
Because the pump 18 is connected to the oil pump 18 through the brake, the pump 18 sucks and pressurizes the oil in the reservoir 19 during braking, and pushes this pressurized oil into the accumulator 22 through the supply pipe 21. Accumulator 22
Oil is stored under pressure inside. Next, when starting or accelerating a vehicle equipped with this engine 1, the electromagnetic valve 27 is opened in conjunction with the starting or accelerating operation. Then, the oil stored under pressure in the accumulator 22 passes through the supply pipe 26 and the electromagnetic valve 27 to the nozzle 2.
5, and the pressurized oil is injected from the nozzle 25. Therefore, the assisting Pelton water wheel 24 comes to be driven, and the turbocharger 23 comes to rapidly rotate at a high speed. Therefore, it becomes possible to perform supercharging without causing any delay due to the turbocharger 23 at the time of starting or accelerating, and it becomes possible to increase the output of the engine 1 at the time of starting or accelerating. In this way, according to the turbocharged engine according to this embodiment, when braking is performed by the retarder consisting of an inductor type generator, the output of this generator is used to operate the oil pump 18 via the motor 16. The oil is pressurized by the accumulator 22.
It is designed to accumulate pressure. Therefore, it becomes possible to pressurize the oil without impairing the output of the engine. Furthermore, the braking force of the engine 1 can be increased by a retarder made of a generator that drives the motor 16. Moreover, this engine 1 uses turbocharger 2 when starting or accelerating.
Since the assist Pelton water turbine 24 of No. 3 is driven, high torque is generated during starting or acceleration, resulting in a high-performance engine.

[Effect of the idea]

As described above, the present invention utilizes energy recovered by a retarder made of a generator during braking to drive a pressurizing pump via a motor, and also accumulates pressurized fluid in a pressure accumulating means. Ok,
The fluid that is pressurized at the time of starting or accelerating is supplied to the fluid wheel of the turbocharger. Therefore, according to the present invention, a generator consisting of a retarder applies braking force to the engine during braking while pressurizing fluid via the motor and pressurizing pump, and accumulating the pressure of this pressurized fluid. By storing the fluid in advance and supplying it to the turbocharger fluid vehicle at the time of starting or accelerating, it becomes possible to improve the starting performance or acceleration performance of the engine. Furthermore, when there is no need to pressurize and accumulate fluid, the output of the generator that makes up the retarder can be consumed by the load resistance by switching the changeover switch and stopping the motor drive. , which allows the generator to operate as a conventional retarder and brake the vehicle without fluid buildup.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a turbocharged engine according to a first embodiment of the present invention, FIG. 2 is an external perspective view showing a retarder installed in this turbocharged engine, and FIG. 3 is a block diagram showing the retarder installed in this turbocharged engine. It is an enlarged front view of the main part. In addition, in the symbols used in the drawings, 15...Load resistance, 16...Motor, 18...Oil pump,
19...oil reservoir, 22...accumulator, 23...turbocharger, 24...assist Pelton water wheel (fluid wheel), 25...injection nozzle, 27...electromagnetic valve.

Claims (1)

[Scope of Claim for Utility Model Registration] In an engine in which a fluid wheel is provided in a turbocharger for supercharging and fluid is supplied to the fluid wheel to facilitate rotation of the turbocharger, a retarder consisting of a generator is provided, The output coil of the generator is connected to a load resistor and is also connected to a motor via a changeover switch, and the motor drives a pressurizing pump and the pressurizing pump pressurizes the generator. 1. A turbocharged engine, characterized in that the pressure of the fluid is stored in a pressure storage means, and the stored fluid is supplied to the fluid wheel of the turbocharger at the time of starting or acceleration.