Simbisa iyo 3 yero link pane yenguva cheni. Isa iyo nguva cheni uye crankshaft sprocket. Yekutanga yero link inogadzirisa crankshaft sprocket timing mark. Ongorora: Kune matatu yero zvinongedzo pane yenguva cheni. Zviviri zveyero zvinongedzo (zvine mutsauko we6 zvinongedzo) zvakaenderana neiyo nguva mamaki ekutora uye exhaust camshaft sprockets.

Kana kumhanya kweinjini kudonha, chinochinja chevhavha nguva chinodonha, cheni yepamusoro inosunungurwa, uye cheni yezasi inobata pane exhaust cam rotation kudhonza uye regulator kudonhedza pasi. Nemhaka yokuti camshaft yekupedza haigoni kutenderera pasi pechiito chebhanhire renguva ye crankshaft, camshaft yekutora inoiswa pasi pekubatanidzwa kwemasimba maviri: imwe ndeyokuti kutenderera kunowanzoita exhaust camshaft inotyaira simba rekudhonza reketani yakaderera; imwe yacho Iri regulator inosaidzira cheni uye inotumira simba rekudhonza kune exhaust cam. Iyo camshaft yekutora inotenderera imwe kona θ clockwise, iyo inomhanyisa kuvhara kwevhavha yekutora, kureva, vheji yekupinda inononoka kuvhara inoderedzwa ne θ madhigirii. Kana kukurumidza kunowedzera, mutongi anokwira uye ketani yakaderera yakasununguka. Iyo exhaust camshaft inotenderera newachi. Chekutanga, cheni yezasi inofanirwa kusimbiswa kuti ive mupendero wakaomarara usati watora camshaft inogona kufambiswa kutenderera ne exhaust camshaft. Mukuita kwecheni yezasi ichive yakasununguka uye yakasimba, iyo exhaust camshaft yakatenderera kuburikidza nekona θ, iyo intake cam inotanga kufamba, uye kuvhara kwevhavha yekupinda kunononoka.

Inotevera ndiyo yekuisa dzidziso yetiming cheni:
1. Chekutanga kurongedza chiratidzo chenguva pane camshaft sprocket nechiratidzo chenguva pachivharo chekutakura;
2. Shandura crankshaft kuitira kuti piston yecylinder imwe ive panzvimbo yepamusoro yakafa;
3. Isa cheni yenguva kuitira kuti chiratidzo chenguva chetani chienderane nechiratidzo chenguva pane camshaft sprocket;
4. Isai mafuta pombi drive sprocket kuitira kuti chiratidzo chenguva chetani chienderane nechiratidzo chenguva pane sprocket yepombi yemafuta.