Thermostat bụ ụdị ngwaọrụ na-achịkwa okpomọkụ na-akpaghị aka, na-enwekarị akụrụngwa na-ahụ maka okpomọkụ, site na ịgbasa ma ọ bụ na-ebelata iji gbanye ma gbanyụọ mmiri mmiri jụrụ oyi, ya bụ, gbanwee mmiri na-akpaghị aka n'ime radiator dị ka okpomọkụ nke jụrụ oyi. mmiri mmiri, gbanwee usoro mgbasa ozi nke mmiri jụrụ oyi, iji dozie usoro jụrụ oyi ikike ikpo ọkụ ọkụ.
Igwe ọkụ ọkụ nke injin bụ isi bụ ụdị temometa, nke paraffin na-achịkwa n'ime ya site na ụkpụrụ nke mgbasawanye okpomọkụ na mgbochi oyi iji chịkwaa mgbasa nke coolant. Mgbe obi jụrụ okpomọkụ bụ ala karịa kpọmkwem uru, na nụchara anụcha paraffin na thermostat okpomọkụ mmetụta ahu siri ike, na thermostat valvụ n'okpuru edinam nke mmiri imechi ọwa n'etiti engine na radiator, coolant site na mmiri mgbapụta ka. laghachi na engine, engine obere okirikiri. Mgbe okpomọkụ nke coolant ruru uru a kapịrị ọnụ, paraffin na-amalite ịgbaze ma jiri nwayọọ nwayọọ ghọọ mmiri mmiri, na olu na-abawanye ma pịa tube roba ka ọ daa. N'otu oge ahụ, tube roba na-ebelata ma na-agbali elu n'elu mkpanaka ịkwanye. Mkpanaka ntanye nwere mgbada ala na valvụ ahụ iji mee ka valvụ meghee. N'oge a, coolant na-agafe na radiator na valvụ thermostat, wee laghachi na engine site na mgbapụta mmiri maka nnukwu mgbasa. Ọtụtụ n'ime thermostat na-ahazi n'ime ọkpọkọ mmiri na-emepụta mmiri nke isi cylinder, nke nwere uru nke usoro dị mfe ma dị mfe ịgbapụta egosipụta na usoro jụrụ oyi; Ọdịmma ya bụ na thermostat na-emeghekarị ma na-emechi mgbe ọ na-arụ ọrụ, na-emepụta oscillation phenomen.
Mgbe engine na-arụ ọrụ okpomọkụ dị ala (n'okpuru 70 Celsius C), thermostat na-akpaghị aka na-emechi ụzọ nke na-eduga na radiator, ma mepee ụzọ na-eduga na mgbapụta mmiri. Mmiri jụrụ oyi na-esi na jaket mmiri na-abanye na mgbapụta mmiri ozugbo site na eriri, ma na-ezigara ya jaket mmiri site na mgbapụta mmiri maka mgbasa. N'ihi na mmiri jụrụ oyi anaghị apụ site na radiator, okpomọkụ nke engine nwere ike ịbawanye ngwa ngwa. Mgbe okpomọkụ na-arụ ọrụ nke engine dị elu (n'elu 80 Celsius), thermostat na-akpaghị aka na-emechi ụzọ na-eduga na mgbapụta mmiri, ma mepee ụzọ na-eduga na radiator. Mmiri dị jụụ na-esi na jaket mmiri na-eme ka ọ dị jụụ site na radiator wee zigara ya jaket mmiri site na mgbapụta mmiri, nke na-eme ka ike dị jụụ dịkwuo mma ma na-egbochi engine ahụ ka ọ ghara ikpo ọkụ. A na-akpọ ụzọ okirikiri a nnukwu okirikiri. Mgbe engine na-arụ ọrụ okpomọkụ dị n'etiti 70 Celsius na 80 Celsius C, nnukwu na obere cycles na-adị n'otu oge ahụ, ya bụ, akụkụ nke mmiri jụrụ oyi maka nnukwu okirikiri, na akụkụ nke ọzọ nke mmiri jụrụ oyi maka obere okirikiri.
Ọrụ nke temometa ụgbọ ala bụ imechi ụgbọ ala tupu okpomọkụ eruteghị ọnọdụ okpomọkụ. N'oge a, mmiri mmiri jụrụ oyi nke engine na-alaghachi na engine site na mgbapụta mmiri, a na-eme obere mgbasa ozi na engine iji mee ka engine ahụ kpoo ọkụ ngwa ngwa. Mgbe okpomọkụ karịa nkịtị nwere ike meghere, nke mere na jụrụ mmiri mmiri site dum tank radiator akaghị maka nnukwu mgbasa, ka ngwa ngwa okpomọkụ dissipation.
