Kengele ya mlango ililia tulipokuwa tukila chakula cha jioni.

Yes:

• Kengele = bell
• ya mlango = of the door / door-
• ililia = rang
• tulipokuwa = when we were
• tukila = eating / while we were eating
• chakula cha jioni = evening meal / dinner

So the whole sentence means:

The doorbell rang when/while we were eating dinner.

Swahili often expresses this idea with a noun + of phrase.

• kengele = bell
• mlango = door
• kengele ya mlango = bell of the door

In natural English, we usually turn that into doorbell.

Because ya has to agree with the noun that comes before it, which is kengele.

In Swahili, these connectors change according to noun class:

• kengele belongs to a noun class that takes ya
• so kengele ya mlango is correct

This same pattern happens a lot:

• kitabu cha mwanafunzi = the student’s book
• gari la mwalimu = the teacher’s car
• kengele ya mlango = the doorbell

So ya here is not random; it matches kengele.

ililia can be broken down like this:

• i- = subject marker for a class 9 noun such as kengele
• -li- = past tense
• -lia = the verb stem here

So:

i-li-lia = it rang

Since kengele is the subject, the verb must agree with it, so you get i-.

Yes, kulia often means to cry / to weep, but in context it can also mean to sound / ring, especially for things like:

• bells
• alarms
• phones

So kengele ililia means the bell rang, not the bell cried in an emotional sense.

This is one of those cases where context tells you which meaning is intended.

It is made from several parts:

• tu- = we
• -li- = past tense
• -po- = a relative element often giving the idea of when / where / at the time that
• -kuwa = be

So tulipokuwa means something like:

when we were
or
at the time we were

It introduces the background situation for the main action.

Because Swahili is expressing an ongoing background action.

• tulipokuwa = when we were
• tukila = eating / while eating

Together they give:

when we were eating
or
while we were eating

English uses were eating as one unit, but Swahili often builds this idea with a structure like tulipokuwa + tukila.

In tukila, the -ki- often gives the sense of:

• while
• when
• sometimes if, depending on context

So:

• tu- = we
• -ki- = while/when
• -la = eat

tukila = while we are/were eating

In this sentence, it describes an action already in progress when the bell rang.

Because chakula belongs to a noun class that uses cha as the connector.

• chakula = food / meal
• jioni = evening
• chakula cha jioni = evening meal / dinner

So just like kengele takes ya, chakula takes cha.

This is another noun-class agreement pattern.

Yes, it is a very clear and natural way to say dinner or evening meal.

Literally it means:

food/meal of the evening

You may also come across other ways of referring to meals, but chakula cha jioni is straightforward and common.

Good question.

• tulikuwa tukila = we were eating
• tulipokuwa tukila = when we were eating

So tulikuwa tukila just states the ongoing action.

But tulipokuwa tukila connects that action to another event, in this case the bell ringing.

That is why the full sentence uses tulipokuwa tukila: it means when/while we were eating.

Yes. Both are possible here.

• The doorbell rang when we were eating dinner.
• The doorbell rang while we were eating dinner.

The Swahili sentence allows either idea naturally.
While emphasizes that the eating was in progress.
When is also completely normal in English for this situation.