Motor drive controller for vehicle

• US 6,348,771 B1
• Filed: 03/30/2000
• Issued: 02/19/2002
• Est. Priority Date: 03/31/1999
• Status: Expired due to Term

• Current Assignee: Suzuki Motor Corporation
• Original Assignee: Suzuki Motor Corporation
• Inventors: Morimoto, Kazuhiko, Omata, Yoshiaki
• Primary Examiner(s): Ip, Paul
• Assistant Examiner(s): Duda, Rina I.
• Application Number:
  US09/539,000
• Time in Patent Office: 691 Days
• Field of Search: 318/139, 318/376, 318/432, 318/366, 180/65.1, 180/65.2, 180/65.3, 180/65.4, 180/165, 477/7, 477/129
• US Class Current: 318/139
• CPC Class Codes: B60K 6/36 characterised by the transmission gearings
• CPC Class Codes: B60K 6/485 Motor-assist type
• CPC Class Codes: B60K 6/547 the transmission being a stepped gearing
• CPC Class Codes: B60L 15/2045 for optimising the use of energy
• CPC Class Codes: B60L 15/2054 by controlling transmissions or clutches
• CPC Class Codes: B60L 2240/441 Speed
• CPC Class Codes: B60L 2240/445 Temperature
• CPC Class Codes: B60L 50/15 with additional electric power supply with capacitors charged by engine-driven generators B60L50/40; with batteries charged by engine-driven generators B60L50/61
• CPC Class Codes: B60W 10/04 including control of propulsion units
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/08 including control of electric propulsion units, e.g. motors or generators
• CPC Class Codes: B60W 10/26 for electrical energy, e.g. batteries or capacitors
• CPC Class Codes: B60W 20/00 Control systems specially adapted for hybrid vehicles hybrid vehicle design, B60K6/00; electric vehicles B60L
• CPC Class Codes: B60W 2510/0638 Engine speed
• CPC Class Codes: B60W 2510/0676 Engine temperature
• CPC Class Codes: B60W 2510/244 Charge state
• CPC Class Codes: F16H 63/42 Ratio indicator devices
• CPC Class Codes: F16H 63/50 Signals to an engine or motor
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• CPC Class Codes: Y02T 10/64 Electric machine technologies in electromobility
• CPC Class Codes: Y02T 10/70 : Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 : Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 10/72 : Electric energy management in electromobility
• CPC Class Codes: Y10S 903/903 : having energy storing means, e.g. battery, capacitor
• CPC Class Codes: Y10S 903/909 : Gearing
• CPC Class Codes: Y10S 903/919 : Stepped shift

Abstract

The present invention provides a motor drive controller for a vehicle having an engine and a motor disposed therein as a vehicle-propulsion system, the motor having both driving and power-generating functions, comprising: an engine controller for controlling a running state of the engine; motor controller for controlling both driving and power-generating states of the motor in a manner independent of control over the engine gained by the engine controller; engine speed-detector for detecting an engine revolution of the engine; and, engine load-detector for detecting an engine load. The motor controller includes a map defined by respective detection signals from the engine speed detector and the engine load-detector. The motor controller functions to provide alternative control between driving and power generation of the motor in response to a torque instruction value that is retrieved from the map.

Claims

1. A motor drive controller for a vehicle having an engine and an electrical motor disposed therein as a vehicle propulsion system, the motor having both driving and power-generating functions, comprising:

an engine controller for controlling a running state of the engine;

a motor controller for controlling both a drive state and a power generation state of the motor independent from control of the engine by the engine controller;

an engine speed-detector for detecting revolutions of the engine; and

an engine load-detector for detecting load of the engine, the motor controller including a map defined by respective detection signals from the engine speed-detector and the engine load-detector, and the motor controller providing alternative control between driving and power generation of the motor in response to a torque instruction value preset in the motor controller that is retrieved from the map, wherein the map is one of a plurality of maps, one of the maps being provided therein for each gear position.

2. A motor drive controller according to claim 1, wherein the motor controller is connected to a group of detection sensors for detecting a state of a power source and service environments, and wherein the motor controller enables a torque instruction value retrieved from the map to be corrected on the basis of detection signals from the sensors.

3. A motor drive controller for a vehicle having an engine and an electrical motor disposed therein as a vehicle propulsion system, the motor having both driving and power-generating functions, comprising:

an engine controller for controlling a running state of the engine;

a motor controller for controlling both a drive state and a power-generation state of the motor independent from control of the engine by the engine controller;

an engine speed-detector for detecting revolutions of the engine; and

an engine load-detector for detecting load of the engine, the motor controller including a map defined by respective detection signals from the engine speed-detector and the engine load-detector, and the motor controller providing alternative control between driving and power generation of the motor in response to a torque instruction value that is retrieved from the map,

wherein the map defined by the respective detection signals from the engine speed-detector and the engine load-detector is further divided according to a vehicle velocity, thereby providing a subdivided map.