Mazda M Hybrid

id144200000000


Specification

Item

Specification
Integrated starter generator (ISG)
Type
MJ (SKYACTIV-G 2.0)
MK (SKYACTIV-X 2.0)
Category
Wound rotor-type 3-phase synchronous electric motor
Maximum output (kW)
5.1 (SKYACTIV-G 2.0)
4.8 (SKYACTIV-X 2.0)
Maximum torque (Nm)
48 (SKYACTIV-G 2.0)
60 (SKYACTIV-X 2.0)
Mazda M Hybrid battery
Type
Lithium-ion battery
Quantity (module)
1
Connection type
Series
Capacity (Ah)
10


Outline

•  Mazda M Hybrid uses the Integrated starter generator (ISG) with excellent power generation efficiency to generate electricity from the kinetic energy generated when the vehicle decelerates. The system uses the electrical power stored in the Mazda M Hybrid battery, which is a large-capacity battery to improve drivability and fuel economy by reducing engine load and providing motor assist. In addition, the Integrated starter generator (ISG) provides quiet engine restarting after the engine is stopped by after the i-stop function (idling stop).

Structural View

SKYACTIV-G 2.0

am3zzn00010150

SKYACTIV-X 2.0

am3zzn00010278
•  The Mazda M Hybrid consists mainly of the following parts.

Part name

Reference
Integrated starter generator (ISG)
(See INTEGRATED STARTER GENERATOR (ISG).)
Mazda M Hybrid battery
(See Mazda M Hybrid BATTERY.)
DC-DC converter (Mazda M Hybrid)
(See DC-DC CONVERTER (Mazda M Hybrid).)


System wiring diagram

SKYACTIV-G 2.0

am3zzn00010272

SKYACTIV-X 2.0

am3zzn00010275

Operation

•  The operation conceptualization of the Mazda M Hybrid is as follows.
am3zzn00010168
•  Operation conditions differ depending on the vehicle driving conditions and the Mazda M Hybrid-related part conditions.

Number

Status

Operation status

Reference
1
Activation
Mazda M Hybrid activation
1. Mazda M Hybrid activation
2
Generation
Conventional power generation (no regenerative braking)
2. Conventional power generation (no regenerative braking)
3
Storage
Regenerative braking
3. Regenerative braking
4
Use
Mazda M Hybrid battery power supply
4. Mazda M Hybrid battery power supply
5
Motor assist
5. Motor assist
6
Engine restarting by ISG
6. Engine restarting by ISG
7
Interruption
Mazda M Hybrid shut off
7. Mazda M Hybrid shut off


1. Mazda M Hybrid activation

Purpose
•  Verifies that the component parts of the Mazda M Hybrid are normal and activates.
Operation condition
•  Ignition switched ON
Operation content
•  Verifies the conditions of the Mazda M Hybrid battery, Integrated starter generator (ISG), and DC-DC converter (Mazda M Hybrid) and powers on the parts.
•  Supplies electrical power to the vehicle's electrical devices (12 V power supply) from the battery.
am3zzn00010337


2. Conventional power generation (no regenerative braking)

Purpose
•  Generates electrical power using the Integrated starter generator (ISG), charges the Mazda M Hybrid battery, and supplies power to the vehicle’s electrical devices.
Operation condition
•  The charge state of the Mazda M Hybrid battery is the specified value or less during engine rotation.
Operation content
•  Operates the Integrated starter generator (ISG) to charge electrical power in the Mazda M Hybrid battery. The charged electrical power in the Mazda M Hybrid battery is supplied to the vehicle's electrical devices through the DC-DC converter (Mazda M Hybrid).
am3zzn00010154


3. Regenerative braking

Purpose
•  The kinetic energy that is generated when the vehicle decelerates is converted to electricity to charge the Mazda M Hybrid battery.
Operation condition
•  The accelerator pedal is released and the vehicle speed is a certain speed or more.
Operation content
•  Electrical power is generated by the Integrated starter generator (ISG) to charge the Mazda M Hybrid battery. The charged electrical power in the Mazda M Hybrid battery is supplied to the vehicle’s electrical devices through the DC-DC converter (Mazda M Hybrid).
am3zzn00010339


4. Mazda M Hybrid battery power supply

Purpose
•  The engine load used for power generation is suppressed and fuel economy is improved using the energy charged in the Mazda M Hybrid battery.
Operation condition
•  The charge state of the Mazda M Hybrid battery is a certain value or more during engine rotation.
•  i-stop control (during engine-stop control) while driving
•  i-stop control (during engine-stop control) while vehicle is stopped
Operation content
•  The charged electrical power in the Mazda M Hybrid battery is supplied to the vehicle’s electrical devices through the DC-DC converter (Mazda M Hybrid) (discharge from battery not performed).
am3zzn00010340


5. Motor assist

Purpose
•  The Integrated starter generator (ISG) is driven using the charged electrical power in the Mazda M Hybrid battery during deceleration. Fuel economy is improved by suppressing the load applied to the engine.
Operation condition
•  The charge state of the Mazda M Hybrid battery is a certain value or more during engine rotation.
Operation content
•  The Integrated starter generator (ISG) is driven using the charged electrical power in the Mazda M Hybrid battery to assist the engine. Also, electrical power is supplied to the vehicle’s electrical devices through the DC-DC converter (Mazda M Hybrid).
am3zzn00010341


6. Engine restarting by ISG

Purpose
•  The Integrated starter generator (ISG) is driven and the engine restarts quietly and quickly.
Operation condition
•  Engine restart by i-stop control (engine stop control)
•  Engine restart by i-stop control (engine stop control) while driving
Operation content
•  The Integrated starter generator (ISG) is driven using the charged electrical power in the Mazda M Hybrid battery to restart the engine. Also, electrical power is supplied to the vehicle’s electrical devices through the DC-DC converter (Mazda M Hybrid).
am3zzn00010342


7. Mazda M Hybrid shut off

Purpose
•  While the ignition is switched OFF, the Mazda M Hybrid battery is interrupted to reduce self discharge.
Operation condition
•  Ignition switched OFF
Operation content
•  Disconnects the Mazda M Hybrid battery, Integrated starter generator (ISG), and the DC-DC converter (Mazda M Hybrid). Supplies electrical power to the vehicle's electrical devices (12 V power supply) from the battery.
am3zzn00010343

•  The following is an example of the Mazda M Hybrid operation.
am3zzn00010159

Mazda M Hybrid condition verification

•  The PCM sends a signal related to the regenerative braking condition to the connectivity master unit (CMU).
•  The connectivity master unit (CMU) displays information related to the Mazda M Hybrid on the multi-information display or center display by receiving the signal from the PCM. (See MULTI-INFORMATION DISPLAY.)


Mazda M Hybrid malfunction

•  If a malfunction occurs in a part related to the Mazda M Hybrid, the PCM sends a charge warning light or master warning light illumination request to the instrument cluster and a message display request to the multi-information display or center display according to the malfunction condition. (See MULTI-INFORMATION DISPLAY.)