2021-2026 Honda Jazz 4 Door Quick Reference Guide -> e:HEV User Manual
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Quick Reference Guide -> e:HEV for Your Honda Jazz 4 Door Fourth Generation (2021-2026)

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Quick Reference Guide
e:HEV
Your e:HEV vehicle uses both an electric motor and a petrol engine as propulsion sources, with the electric motor receiving electricity from
an internal High Voltage battery and/or internal generator. The High Voltage battery is charged from the generator driven by the engine or
regenerative braking.
When driving, your vehicle is propelled exclusively by the electric motor, exclusively by the petrol engine, or by a combination of the two.
The system selects which propulsion source is most appropriate and automatically switches to it.
●
Energy efficiency
As with a petrol-powered vehicle, hybrid vehicle fuel efficiency and driving range is most impacted by your driving style. Aggressive
acceleration and high-speed driving can easily trigger the system to switch the propulsion source to the petrol-powered engine.
In addition, heavy climate control system use negatively affects vehicle range and efficiency. Either of these use patterns will more quickly
reduce the High Voltage battery's state of charge.
●
Battery types
There are two types of batteries used in this vehicle; a standard 12-volt battery that powers the airbags, the interior and exterior lights,
and other standard 12-volt systems; and a High Voltage battery that is used to power the propulsion motor and recharge the 12-volt
battery.
* Not available on all models
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Quick Reference Guide
e:HEV MAIN COMPONENTS
Petrol Engine
– Runs the generator and under certain
conditions, drives the wheels directly.
Generator
– Starts the engine and generates electric power
when driven by the petrol engine to supply electricity to
power the electric motor and/or to charge the High Voltage
battery.
Electric Motor
– Provides propulsion to drive the wheels in
conjunction with the petrol engine in certain conditions and
provides electricity to the High Voltage battery through
regenerative braking.
High Voltage Battery
– Provides electrical storage and
serves as a power source for the electric motor.
Learning about the High Voltage battery’s characteristics will
help you get the best handling and maximise the range of
your electric vehicle. (P394)
a
High Voltage Battery
b
Generator & Electric Motor
c
Petrol Engine
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Quick Reference Guide
Operating
mode
Electric Vehicle (EV) Hybrid (HV) Engine (Direct Drive) Regeneration
Driving state
Stopped or driven at low speeds:
• Only the electric motor
provides propulsion to the
wheels.
Driven in high-load conditions
(e.g., when accelerating, going
uphill):
• The Electric Motor provides
propulsion to the wheels.
•
The petrol engine drives the
generator, supplying electricity
to the electric motor for added
propulsion or to the High
Voltage battery for charging.
Driven in high-speed, low-load
conditions:
• The petrol engine provides
propulsion to the wheels.
• The High Voltage battery
supplies electricity to the electric
motor for added propulsion.
•
The electric motor provides electricity
to the High Voltage battery through
regenerative braking.
The accelerator pedal is released
and the vehicle is decelerating.
• The electric motor provides
electricity to the High Voltage
battery through regenerative
braking.
Power Flow
Monitor
Electric motor Stopped/Running Running Generating/Running Regenerating
Generator Stopped Generating No Output Stopped/No Output
Engine Stopped Running Running Stopped/No Output
High Voltage
battery
Discharge Charging/Discharge Charging/Discharge Charging
Vehicle
Speed
Time
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Quick Reference Guide
●
Regenerative Energy and Regenerative Braking
When decelerating without the accelerator being depressed or the brake pedal being applied, or
while driving downhill, the electric motor acts as a generator that recovers a portion of the electrical
energy that was used to accelerate the vehicle. This regenerative braking slows the vehicle in a
manner similar to engine braking in a petrol-powered vehicle. This function is enhanced when the
shift lever is moved to .
When decelerating without the accelerator being depressed or the brake pedal being applied, or
while driving downhill, the electric motor acts as a generator that recovers a portion of the electrical
energy that was used to accelerate the vehicle. This regenerative braking slows the vehicle in a
manner similar to engine braking in a petrol-powered vehicle. You can control the rate of
deceleration by using the deceleration paddle selector.
●
Auto Engine Stop/Start
Your vehicle’s petrol engine automatically stops running during vehicle operation or restarts while the vehicle is stationary when it is
appropriate.
In the following cases, however, auto engine stop may not activate.
• The vehicle momentarily needs additional power for aggressive acceleration, or driving uphill or at high speed.
• The climate control system is in heavy use.
• The High Voltage battery temperature is high or low.
• The High Voltage battery is too low on charge.
• Sounds Unique to the e:HEV
When you first start driving this vehicle, you will likely hear some unfamiliar sounds, particularly when you turn on the power system, or
while you are driving or accelerating from a stop. Some of these sounds are unique to this vehicle's powertrain, fuel, and climate control,
and High Voltage battery cooling systems; others are similar to sounds generated by conventional automobiles that typically are masked by
louder noises absent from a vehicle of this design. These sounds are not a cause for concern, and you will soon recognise them as normal
and thus be able to detect any new or unusual noise should one develop.
a
Motor
b
High Voltage Battery
Models without drive mode switch
Models with drive mode switch
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