Innreguleringen skjer med sikte på å forbedre luftutskiftingen.

Innreguleringen is a technical noun, and in this kind of context it usually means something like:

• the adjustment
• the balancing
• the fine-tuning
• sometimes the commissioning adjustment

If this is about ventilation or HVAC, innregulering often refers to adjusting a system so it works correctly, for example so the airflow is properly balanced.

So Innreguleringen is not just any adjustment, but the specific adjustment/balancing process being discussed.

Because Norwegian adds the definite article to the end of the noun.

• innregulering = adjustment / balancing
• innreguleringen = the adjustment / the balancing

That final -en is the definite ending for many singular common-gender nouns.

So instead of a separate word like English the, Norwegian often attaches definiteness to the noun itself.

Skjer is the present tense of å skje, which means to happen or to take place.

So literally:

• Innreguleringen skjer ... = The adjustment happens / takes place ...

In natural English, depending on context, you might also understand it as:

• The adjustment is carried out ...
• The balancing is done ...

Norwegian often uses skje where English might prefer a more explicitly passive or process-based expression.

Not exactly, though they are related.

Skjer is the present tense and can sometimes correspond to happens, is happening, or takes place, depending on context.

In this sentence, it is probably not emphasizing an action in progress right now. It is more like a general statement about purpose:

• The adjustment takes place / is carried out with the aim of improving...

So translating it as is happening would sound a bit too literal in many cases.

Med sikte på is an expression meaning:

• with the aim of
• with a view to
• for the purpose of
• aimed at

It is a fixed phrase, so it is best learned as a whole.

Examples:

• med sikte på forbedring = with the aim of improvement
• med sikte på å forbedre = with the aim of improving

So in your sentence, it introduces the goal or purpose of the adjustment.

Because forbedre is an infinitive verb, and Norwegian normally uses å before the infinitive, much like English to.

• å forbedre = to improve

So:

• med sikte på å forbedre luftutskiftingen = with the aim of improving the air exchange

You can think of the structure as:

• med sikte på
  • å + infinitive

That said, after med sikte på, you can also have a noun phrase instead of a verb:

• med sikte på bedre luftutskifting = with a view to better air exchange

Forbedre means to improve.

It is built from:

• for-
  • bedre

Historically, it is related to the idea of making something better.

Examples:

• forbedre kvaliteten = improve the quality
• forbedre systemet = improve the system
• forbedre luftutskiftingen = improve the air exchange / ventilation

Luftutskiftingen is a compound noun:

• luft = air
• utskifting = replacement / exchange
• -en = the

So luftutskiftingen means:

• the air exchange
• the air replacement
• in practical context often simply the ventilation

In technical writing, luftutskifting usually refers to how effectively indoor air is replaced with fresh air.

Because Norwegian very often forms compound nouns by joining words together.

So where English might write:

• air exchange
• ventilation system
• room temperature

Norwegian commonly writes:

• luftutskifting
• ventilasjonssystem
• romtemperatur

This is extremely common in Norwegian, and it is something English speakers often need to get used to.

Because it refers to the air exchange as a specific thing in the situation being discussed.

Compare:

• luftutskifting = air exchange in a general sense
• luftutskiftingen = the air exchange / the ventilation rate in this specific system or setting

Technical Norwegian often uses definite forms where English may or may not do the same, depending on style.

Not grammatically passive in the strict sense.

A true passive in Norwegian would often use:

• bli
  • past participle
• or the -s passive in some cases

But here we have:

• Innreguleringen skjer ...

That is an active construction with an intransitive verb: the adjustment takes place.

However, in English, a passive translation may sound more natural:

• The adjustment is carried out with the aim of improving the air exchange.

So the Norwegian is not formally passive, even if English might translate it that way.

The sentence breaks down like this:

• Innreguleringen = subject
• skjer = verb
• med sikte på å forbedre luftutskiftingen = adverbial phrase showing purpose

So the pattern is:

• Subject + verb + phrase of purpose

A very literal gloss would be:

• The adjustment takes place with the aim of improving the air exchange.

It can, but med sikte på å ... is a very natural and somewhat formal/technical way to express purpose.

Possible alternatives might include:

• for å forbedre luftutskiftingen = to improve the air exchange / in order to improve the air exchange
• med sikte på å forbedre luftutskiftingen = with the aim of improving the air exchange

The version with med sikte på sounds a bit more formal, deliberate, and technical.

Yes. A simpler version would be:

• Innreguleringen skjer for å forbedre luftutskiftingen.

That means essentially the same thing:

• The adjustment is done to improve the air exchange.

The original version with med sikte på is just more formal and often better suited to technical or written language.

Yes, very much so.

Features that make it sound technical or formal include:

• the abstract noun innreguleringen
• the formal expression med sikte på
• the compound noun luftutskiftingen

Technical Norwegian often prefers noun-heavy, compact phrasing like this. In everyday speech, people might choose simpler wording.