JPS6183455A - Supercharging unit for internal-combustion engine - Google Patents

Abstract

PURPOSE:To feed the required air in a flexible manner according to an operating state of an internal-combustion engine, by driving a compressor with a motor, while letting motor drive to be controlled by each operating state of a supercharger unit and a fuel feed device. CONSTITUTION:Each operating state of a supercharger and a fuel feed device is received by each of sensors 9 and 12, and corresponding to these signals 2 and a demand signal out of an operator, a controller 3 transmits the required signal to a motor driving power supply 4 which converts power fed out of a generating set 7 into a motor driving power waveform by a command out of the controller 3 and transmits it to a supercharger body 1. And, this supercharger body 1 receives it and rotates, feeding an internal-combustion engine 8 with the required quantity of compressed air.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a supercharging device for an internal combustion engine used for vehicles such as passenger cars and trucks, or for all-electric compressor drives.

[Prior art]

Conventional supercharging systems for internal combustion engines mainly use a so-called so-called so-called so-called so-called so-called so-called so-called so-called so-called so-called so-called so-called so-called so-called so-called so-called so-called so-called so-called so-called so-called so-called so-called so-called so-called so-called so-called so-called so-called so-called supercharging system that drives a compressor from an exhaust turbochart or an engine output shaft by mechanical means.

Turbochargers operate on 2(a) high-temperature gas, so
It requires expensive and heavy heat-resistant materials, and (b) it is difficult to obtain good matching over a wide range of engine speeds, from low speeds to high speeds.
There are drawbacks such as a delay in response until the 0W accel signal appears as the Ennon output.

Further, the supercharger has drawbacks such as (a) both capacity and weight are too high, and (b) since it is synchronized with engine rotation, supercharging pressure cannot be controlled and C→loss is large.

[Problem that the invention seeks to solve]

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned drawbacks and provide a supercharging device that supplies air necessary for a required output according to the state of an internal combustion engine through flexible control.

[Means for solving problems]

The present invention is characterized in that in a supercharging system for an internal combustion engine that has a compressor and a motor that drives the congressor, the motor rotates in response to signals indicating the operating status of two engines, the supercharging system, and the fuel supply system. A controller that emits signals that control numbers.

The present invention further includes a power supply device that drives the motor using signals from the controller.

[For production]

In the above case, the motor is driven by a power supply device such as an inverter, and the inverter is controlled by a controller that receives signals from the internal combustion engine, accelerator pedal, supercharging device, etc.

Since the rotational speed of the motor can be set independently of the operating state of the internal combustion engine, the supercharging pressure can be set flexibly over a wide operating range without being restricted by the rotation of the internal combustion engine.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view showing a supercharging device main body according to an embodiment of the present invention, and FIG. 2 is an explanatory diagram showing a supercharging device according to an embodiment of the present invention.

In the figure, a rotor 1a of an induction type or synchronous type high-speed motor and a rotary compressor 1b such as a centrifugal, mixed flow, or axial flow type are connected on the same rigid shaft 1a without using means such as coupling, and a bearing , a rotating part comprising parts such as seals,
Motor stator coil.

A supercharger main body 1 comprising a cooling medium passage and connectors for wiring and piping, etc., and a controller 3 which receives signals 2 such as supply and exhaust temperatures, dull position of the accelerator, etc., and sends out signals to control the rotational speed of the motor. and a cooling device 5. The lubricating device 62 and the power generating device 7 constitute a supercharging device for the engine.

The operation in the case of the above configuration will be described.

The operating conditions of the internal combustion engine, the supercharging device, and the fuel supply device are detected by the sensors 9 and 12, and the controller 3 sends the required signals in response to these signals 2 and the request signal from the operator. The signal is sent to the motor drive power supply device 4. The power supply device 4 converts the power co-supplied from the power generation device 7 into a motor/driving power waveform according to a command from the controller 3 and sends the waveform to the supercharger main body 1 . The supercharger main body 1 rotates in response to this, and supplies the required amount of compressed air to the internal combustion engine 8.

With this device, the amount of supercharging air supplied to the internal combustion engine can be flexibly controlled. Also.

When an abnormality occurs in the supercharger body 1, the relief valve 11 opens to bypass the pressurized air and prevent it from flowing into the two engines, thereby preventing damage to the engines.

〔Effect of the invention〕

The above case has the following effects.

(1) The required amount of air can be delivered to the internal combustion engine in 2 liters depending on the operating state of the internal combustion engine.

(2) Therefore, the torque of the internal combustion engine can be freely obtained.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing the main body of a supercharging device according to an embodiment of the present invention, and FIG. 2 is an explanatory diagram showing a supercharging device according to an embodiment of the present invention. 1...Supercharger body, la...motor rotor, Ib...
...Compressor, ld...Motor stator, 3...
Controller, 4... Power supply device, 8... Internal combustion engine.

Claims (1)

[Claims] 1. In a supercharging system for an internal combustion engine that has a compressor and a motor that drives the compressor, a controller that receives signals from the operating status of the engine, the supercharging system, and the fuel supply system and issues a signal to control the rotational speed of the motor; A supercharging device for an internal combustion engine, comprising a power supply device that drives the motor based on a signal from a controller.