HOW DOES A HYBRID CAR WORK?

E-Tech full hybrid - how does it work - Renault
the principle behind E-Tech hybrid technology
Renault made the choice to develop 2 types of technology: E-Tech full hybrid, for vehicles that do not need to be plugged in, and E-Tech plug-in hybrid, for vehicles that can be plugged in. Both options offer environmentally friendly vehicles that are cost-effective, combining driving pleasure and everyday simplicity.
 
They operate in the same way, with only 3 differences:
  • the size of the battery, and therefore the capacity to drive 100% electric,
  • E-Tech plug-in hybrid vehicles can connect to the mains to charge,
  • electrification of the rear axle for the PHEV (plug-in hybrid).

our hybrid powertrains

They are called “series/parallel hybrids” because they offer the option of operating as 100% electric, as a hybrid (electric + combustion engine) or with the combustion engine alone.
two electric motors
Both technologies combine two electric motors (alternator-starter and traction motor) with a combustion engine for optimum performance. Plug-in hybrid technology features an additional electric motor on the rear axle, providing an even more comfortable and dynamic driving experience.
technology for performance
The innovative technologies integrated into the car, such as smart gearbox, energy management system and regenerative braking, make it possible to switch between the different powertrains or to operate them simultaneously as required. So, the hybrid vehicle’s performance and consumption are optimised for maximum efficiency.
dynamic pick-up
E-Tech powertrains offer powerful acceleration, dynamic pick-up, and reduced CO2 emissions and fuel consumption.
full hybrid engine
Full hybrid vehicles do not need to be plugged in. Their battery charges automatically as you drive, optimising fuel consumption and making your daily life easier.   
E-Tech full hybrid - hybrid powertrains - Renault
E-Tech full hybrid - petrol engine - Renault
PETROL ENGINE
The combustion engines are specially designed to reduce consumption and CO₂ emissions. Fitted with a particulate filter, they combine economy, efficiency and performance.
E-Tech full hybrid - traction battery - Renault
THE TRACTION BATTERY
A battery that stores the energy required to move the vehicle and then keep it running in electric mode. Its size varies greatly depending on the type of powertrain: up to 2 kWh for a full hybrid and up to 10.4 kWh for a plug-in hybrid.
E-Tech full hybrid - automatic intelligent multimodal gearbox - Renault
INTELLIGENT MULTIMODE AUTOMATIC GEARBOX
This revolutionary gearbox delivers optimum performance. It works in combination with the energy management system drawn from our expertise. In all, it has up to 15 driving modes through 2 electric gears and 4 combustion engine gears, which can work together or separately. 
E-Tech full hybrid - main electric motor - Renault
MAIN ELECTRIC MOTOR
It helps to start the vehicle, provides 100% electric driving, powers the wheels and recharges the battery when you brake or decelerate.
A SECONDARY ELECTRIC MOTOR
It acts as the starter motor and the high-voltage generator for the battery. It is also used as a stabiliser during gear changes, to avoid judder and vibrations.
POWER ELECTRONICS
The system continuously ensures the transfer and AC/DC conversion of the electrical energy between the traction battery and the electric motor.
plug-in hybrid engine
Our plug-in hybrid vehicles have technology similar to that of our full hybrid models. The difference lies in their increased battery capacity, the possibility of charging from an electrical socket, hence the term “plug-in”, and the addition of a second electric motor.
moteur hybride rechargeable Renault
THE MOTOR
This hybrid engine is similar to our full hybrid engine. It has a combustion engine, an electric motor, power electronics, a multimode gearbox and a secondary electric motor.
THE TRACTION BATTERY
This battery stores the energy required for the plug-in hybrid vehicle to move, so you can drive in electric mode. It provides up to 100 km of electric driving range, with a capacity of up to 22 kWh.
THE REAR MOTOR
This electric motor installed on the rear axle makes it possible to drive in four-wheel drive.

the different modes of traction

A hybrid engine is made up of 2 main traction motors that alternate or operate simultaneously to power the vehicle. Find out about the different traction modes:   
E-Tech full hybrid - modes of traction - Renault
electric traction
At start-up, only the electric motor drives the wheels, therefore no fuel is consumed. You always start silently and can drive up to a speed of 130 km/h and for up to 5 minutes using only electric power, depending on your driving style and the model*. 

*Austral E-Tech full hybrid 200 hp
hybrid traction
This mode involves the simultaneous use of two power sources to drive the vehicle.

For dynamic driving, the petrol engine backs up the electric motor to maintain performance. The two motors work together to increase the power of your car. This is what is known as parallel hybrid operation.

In some cases, when the battery level is low, the 2 motors operate at the same time, but only the electric motor drives the wheels. In this specific case, the electronic management activates the internal combustion engine to optimise the overall consumption and to recharge the battery. This is what is known as series hybrid operation.
combustion engine traction
When just the combustion engine is running, it is used at its optimal speed, to drive the vehicle’s wheels and to recharge the battery. The vehicle’s overall consumption is optimised and the additional energy is stored to help resume electric driving.
E Drive
Reduce your fuel consumption with the E Drive function. It uses the combustion engine as a generator to maximise energy efficiency.
from one mode of traction to another
You can switch from one traction mode to another in two ways:
  • automatically, using the onboard electronic management system. This system analyses the battery charge level, the demand for acceleration and the type of road, and adapts the traction mode accordingly, which helps to optimise the vehicle’s performance. 
  • manually, only for plug-in hybrids, when choosing to drive 100% electric.
from front-wheel drive to rear-wheel drive
Our plug-in hybrid powertrain, equipped with a rear motor, can operate in front-wheel drive, rear-wheel drive or 4-wheel drive. Depending on the driving mode selected (eco, sport, normal) and the type of traction, the vehicle automatically adjusts the ideal combination of rear-wheel and front-wheel drive to guarantee comfort and energy efficiency.

managing charging

E-Tech full hybrid - battery - Renault
the battery in full hybrid vehicles
The battery charges only when you are driving, using kinetic energy. Simple hybrid vehicles do not need to be plugged in, as they have a system that recovers energy when you brake or decelerate. This is enough to completely recharge the battery. The engine charges the battery during combustion engine traction.
E-Tech plug-in hybrid - battery - Renault
the battery in plug-in hybrid vehicles
The battery mainly charges by plugging the vehicle into the mains, but also as you drive (around 10% of potential recharging). Plug-in hybrid vehicles have a flap that can be used to completely recharge the battery.

the Renault E-Tech full hybrid and E-Tech plug-in hybrid range

E-Tech full hybrid - Renault
E-Tech full hybrid
The vehicles have 2 alternator-starters, an electric motor and a combustion engine, which recharge as you drive and make it possible to drive 100% electric for up to 80% of the time (WLTP urban cycle).
E-Tech plug-in hybrid - Renault
E-Tech plug-in hybrid
Vehicles equipped with a combustion engine and 2 electric motors with the possibility of recharging their battery, which provides a 100% electric driving range of up to 100 km in mixed use (WLTP cycle corresponding to different types of roads).

your questions on how hybrid cars work

HOW IS SWITCHING BETWEEN THE DIFFERENT TYPES OF TRACTION MANAGED?
The vehicle manages switching between the electric, hybrid and combustion traction automatically using an electronic system. It takes three criteria into account, to offer the best compromise between performance and consumption:
  • the demand for acceleration from the pedal;
  • the profile of the road on which you are driving;
  • the battery charge level.
 Essentially, during start-up, during steady driving and normal acceleration, a hybrid vehicle mostly uses the electric motor. When you push down harder on the accelerator, when the nature of the terrain requires more power (e.g. for a steep climb) or when the battery is not sufficiently charged, the vehicle engages the combustion engine. Depending on the case, the combustion engine will complement the electric motor (hybrid traction) or replace it entirely (combustion engine traction).
CAN YOU DRIVE A HYBRID CAR WITH NO PETROL?
No, it’s not possible.
A hybrid car continues to drive, even when the traction battery is depleted, by using the combustion engine. However, the opposite is not true: the hybrid and electric traction modes are there to operate alternately with the combustion mode, but not to replace it entirely. If a hybrid car has run out of petrol, the other modes of traction can only take over briefly before the car stops.
HOW LONG DOES THE BATTERY IN A HYBRID CAR LAST FOR?
The electric battery is not always used, as the vehicle also operates using the combustion engine. The wear on the battery is therefore gradual and does not provoke a sufficient loss of capacity to prevent the vehicle from operating.
Moreover, if the vehicle is protected from extreme temperatures, particularly the cold, it can last for a hybrid vehicle’s entire life span.
The battery in a Renault hybrid vehicle is guaranteed for 8 years or 160,000 km.

also discover

E-Tech full hybrid - advantages- Renault
E-Tech plug-in hybrid - advantages - Renault
E-Tech full hybrid - range - Renault