Electric supercharger-equipped moving machine

Patent metadata

Field	Value
Publication number	US-11618428-B2
Application number	US-202117172412-A
Country	US
Kind code	B2
Filing date	Feb 10, 2021
Priority date	Mar 10, 2020
Publication date	Apr 4, 2023
Grant date	Apr 4, 2023

Abstract

An electric supercharger-equipped moving machine includes: an engine; a supercharger configured to increase intake pressure of the engine; an electric motor including a motor driving shaft; a power transmitting path including a power transmitting shaft through which driving power of the engine is transmitted to a propulsive power generating body; and a switching clutch configured to be able to block power transmission from the electric motor to the power transmitting shaft. The motor driving shaft is connected to the supercharger so as to be able to drive the supercharger when the switching clutch is in a disengaged state. The motor driving shaft is connected to the power transmitting shaft so as to be able to drive the propulsive power generating body when the switching clutch is in an engaged state.

First claim

What is claimed is:

1. An electric supercharger-equipped moving machine comprising:
an engine;
a transmission including an input shaft, an output shaft, and a transmission gear train, the transmission being configured to change a rotational speed of driving power output from the engine;
a supercharger configured to increase intake pressure of the engine;
an electric motor including a motor driving shaft;
a power transmitting path including the input shaft through which driving power of the engine is transmitted to a propulsive power generating body; and
a switching clutch configured to be able to block power transmission from the electric motor to the input shaft, wherein:
the motor driving shaft is connected to the supercharger so as to be able to drive the supercharger when the switching clutch is in a disengaged state; and
the motor driving shaft is connected to the input shaft so as to be able to drive the propulsive power generating body when the switching clutch is in an engaged state.

2. The electric supercharger-equipped moving machine according to claim 1 , further comprising:
a clutch actuator configured to operate the switching clutch; and
a controller configured to control the engine, the electric motor, and the clutch actuator, wherein
the controller is configured to be able to execute:
an engine supercharging mode in which the controller controls the engine and the electric motor to make the engine and the electric motor drive and controls the clutch actuator to make the switching clutch become the disengaged state; and
an electric traveling mode in which the controller controls the electric motor to make the electric motor drive and controls the clutch actuator to make the switching clutch become the engaged state.

3. The electric supercharger-equipped moving machine according to claim 2 , wherein the electric traveling mode is:
a HEV mode in which the controller controls the engine and the electric motor to make the engine and the electric motor drive and controls the clutch actuator to make the switching clutch become the engaged state; or
an EV mode in which the controller controls the engine and the electric motor to make the engine stop and make the electric motor drive and controls the clutch actuator to make the switching clutch become the engaged state.

4. The electric supercharger-equipped moving machine according to claim 2 , wherein when the engine is in a stop state, and a predetermined engine start command is generated, the controller controls the clutch actuator to make the switching clutch become the engaged state and controls the electric motor to make the electric motor drive.

5. The electric supercharger-equipped moving machine according to claim 1 , further comprising a main clutch through which a driving power of the engine is input to the input shaft.

6. The electric supercharger-equipped moving machine according to claim 5 , further comprising a main clutch actuator that operates the main clutch such that the main clutch cuts or establishes the power transmitting path from the engine to the input shaft.

7. The electric supercharger-equipped moving machine according to claim 1 , further comprising a primary reduction gear through which a driving power of the engine is input to the input shaft.

8. The electric supercharger-equipped moving machine according to claim 1 , wherein the propulsive power generating body is a driving wheel.

9. An electric supercharger-equipped moving machine comprising:
an engine;
a supercharger configured to increase intake pressure of the engine;
an electric motor including a motor driving shaft;
a power transmitting path including a power transmitting shaft through which driving power of the engine is transmitted to a propulsive power generating body;
a switching clutch configured to be able to block power transmission from the electric motor to the power transmitting shaft; and
a one-way clutch configured to, when the switching clutch is in a disengaged state, block the power transmission from the electric motor to the power transmitting shaft and allow the power transmission from the power transmitting shaft to the electric motor, wherein
the motor driving shaft is connected to the supercharger so as to be able to drive the supercharger when the switching clutch is in the disengaged state; and
the motor driving shaft is connected to the power transmitting shaft so as to be able to drive the propulsive power generating body when the switching clutch is in an engaged state.

10. The electric supercharger-equipped moving machine according to claim 9 , wherein the switching clutch is provided at the power transmitting path, while bypassing the one-way clutch, so as to be able to block or allow the power transmission between one side and the other side of the one-way clutch in the power transmitting path.

11. The electric supercharger-equipped moving machine according to claim 9 , wherein the one-way clutch is arranged around an axis of the motor driving shaft.

12. The electric supercharger-equipped moving machine according to claim 9 , wherein:
the one-way clutch includes an inner ring located at the one side and an outer ring located at the other side;
the inner ring is externally fitted to a rotating shaft so as to rotate together with the rotating shaft, the rotating shaft being the power transmitting shaft or the motor driving shaft;
the switching clutch is a dog clutch; and
the dog clutch includes
a first rotating body including an engaging portion and connected to the rotating shaft so as to rotate together with the rotating shaft about an axis of the rotating shaft and
a second rotating body including an engaged portion and connected to the outer ring so as to rotate together with the outer ring about the axis of the rotating shaft.

13. The electric supercharger-equipped moving machine according to claim 9 , further comprising:
a clutch actuator configured to operate the switching clutch; and
a controller configured to control the engine, the electric motor, and the clutch actuator, wherein
the controller is configured to be able to execute:
an engine electricity generation mode in which the controller controls the engine and the electric motor to make the engine drive and make the electric motor perform regeneration and controls the clutch actuator to make the switching clutch become the disengaged state;
an engine supercharging mode in which the controller controls the engine and the electric motor to make the engine and the electric motor drive and controls the clutch actuator to make the switching clutch become the disengaged state; and
an electric traveling mode in which the controller controls the electric motor to make the electric motor drive and controls the clutch actuator to make the switching clutch become the engaged state.

14. The electric supercharger-equipped moving machine according to claim 13 , wherein the electric traveling mode is:
a HEV mode in which the controller controls the engine and the electric motor to make the engine and the electric motor drive and controls the clutch actuator to make the switching clutch become the engaged state; or
an EV mode in which the controller controls the engine and the electric motor to make the engine stop and make the electric motor drive and controls the clutch actuator to make the switching clutch become the engaged state.

15. The electric supercharger-equipped moving machine according to claim 13 , wherein when the engine is in a stop state, and a predetermined engine start command is generated, the controller controls the clutch actua

Assignees

• Kawasaki Motors Ltd

Inventors

• Nishiyabu Masaki

Classifications

• B60K2006/4833

  Step up or reduction gearing driving generator, e.g. to operate generator in most efficient speed range · CPC title

• B60K6/48

  Parallel type · CPC title

• B60W10/08

  including control of electric propulsion units, e.g. motors or generators · CPC title

• Y02T10/62

  Hybrid vehicles · CPC title

• B60K6/547

  the transmission being a stepped gearing · CPC title