Everything you need to know about hybrid vehicle alternators and starters

AS-PL reports on the latest technological developments and how they work

Everything you need to know about hybrid vehicle alternators and starters

Cars with hybrid drives were first introduced at the beginning of the 20th century.

These were experimental units but nevertheless were able to prove that the automotive industry could expect a huge technological leap in the future.

Currently, the portfolio of hybrid vehicles is extensive and includes various engine variants.

Whether a particular engine is equipped with an alternator and starter and their particular role is also a diverse matter.

When it comes to hybrid engines, can we still talk about these elements as we knew them from previous generations of engines?

The automotive industry is developing very rapidly, both from the perspective of passenger car users, as well as those driving utility vehicles.

Mechanics also need to expand their knowledge and invest in garage equipment to be able to provide service for the ever-increasing number of cars with hybrid and electric drives.

Hybrid vehicles come in a multitude of versions and models.

From the less advanced ones, up to those more technically complex, where the user decides which engine to choose: electric or internal combustion.

The function of the alternator and starter in such engines was also not immune to change.

Micro, mild and full hybrids

Several types of hybrid vehicles can be distinguished based on how advanced they are.

Micro hybrids tend to feature electric engine functions as a starter and/or alternator, but it does not drive the car directly.

In mild hybrids, the electric engine supports the internal combustion engine.

In full hybrids, the electric engine supports the combustion engine but can also propel the car independently.

Series, parallel and mixed hybrids

The following hybrids are distinguished based on the manner of connection between the internal combustion and electric engine.

In series, the internal combustion engine does not provide much power and its only role is to support the generator (an alternator combined with a starter).

In parallel, the electric engine supports the internal combustion one.

The internal combustion engine is mechanically connected with the wheels.

The system may be equipped with one or two clutches and split axles.

Mixed is a combination of the above approaches.

Integrated starter-alternators

Hybrid vehicles are equipped with integrated starter-alternator (ISA) systems.

Their functions include, but are not limited to, energy recovery during braking (regenerative braking), START/STOP system, or supporting the main engine when starting, increasing power, or accelerating.

This system also allows for powering other devices, such as electric power steering and air conditioning.

The newest i-StARS integrated alternator-starters are digitally controlled via communication protocols, such as LIN or BSS.

Hybrid drive applications are an example of how far we have gone and how little is needed to completely replace the internal combustion engines with electric ones.

Increasing power capacity (cells) or charging speed will certainly be important in this respect.

An infrastructure network full of easily accessible electricity sources is also not without importance.

It may be predicted that the way integrated alternator-starter systems are applied will change or that they will be replaced with a more modern system, completely abandoning the drives we know today.

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