Gịnị bụ viscosity nke engine mmanụ, na otú ọ na-emetụta ndị ọrụ nke engine

The isi ọrụ nke engine mmanụ - na-enye di ntakiri esemokwu nke engine na-akpụ akpụ n'akụkụ. Ebe ọ bụ na ụgbọ ala engines mee n'elu a sara mbara nke ukwuu okpomọkụ nso, ike a mmanu ga-hụ kacha arụmọrụ n'okpuru niile na-arụ ọrụ ọnọdụ, ọ gaghị ekwe omume. N'ihi na engine emepụta ekpebi ndị kasị mma ọkwa mmanụ na-enye ndị kasị elu na o kwere omume arụmọrụ na ọ dịghị ihe ọzọ ga-ekwe omume-eyi akụkụ n'okpuru ụfọdụ ọnọdụ nke ọrụ nke moto. E nwere a nkewa nke mmanu na "n'oge okpomọkụ" na "oyi", nke dị iche isi na viscosity.

Nanị tinye, na viscosity nke engine mmanụ e ji mara ya ike ịnọgide na-elu nke workpiece, mgbe nọgide na-enwe fluidity. Nke a bara uru bụ mgbe nile na-adabere na okpomọkụ. N'ụzọ ziri ezi ekemende viscosity nke engine mmanụ bụ ike ịgbatị ọrụ ndụ nke moto. Ezughị oke nhọrọ nke a mmanu na-eduga ná akaghi aka engine eyi. Iji-enwe ike n'ụzọ ụfọdụ ịnyagharịa nso nke lubricants, ndị nhazi ọkwa e mepụtara. Dị ka Russian GOST ha na-ekewa n'ime:

• oyi;
• n'oge okpomọkụ;
• oge.

N'ihi na ihe niile na klas kọwaa site kinematic viscosity na ¹⁰⁰ ° C, na maka oyi oge nakwa na -18 Celsius ^C. Na ọtụtụ mba nke ụwa nakweere SAE nhazi ọkwa, mepụtara site na American Society avtoinzhenerov.

Ọ na-kweere na ndị dị elu nke elu-okpomọkụ viscosity nke engine mmanụ, ka mma. Nke a abụghị eziokwu. Na ọ bụ ezie na egwuregwu ụgbọ ala na-atụ aro iji a elu viscosity index nke engine mmanụ, ọ pụtaghị na gị engine n'ọnụ mmiri na a viscous griiz, ị ga-eme ka ọkọlọtọ ụgbọ ala super egwuregwu ụgbọ ala. The moto ga na-agba ọsọ ka mma. Ọ na-eme ndị ọzọ ụzọ gburugburu: na engine ga ngwa ngwa ida ike na ga-achọ isi Ndozi ma ọ bụ ọbụna ndochi.

Ke ọrụ akwụkwọ e dere ihe kacha adabara gị na moto viscosity engine mmanụ. N'ikpebi a oke, Nsukka-gaa na akaụntụ niile kwere omume ụdịdị nke ime nke engine na ya nile elu-ọsọ ụdịdị. N'ihi na ọ na-egosi ndị kasị ezigbo afọ nke viscosity.

Iji mmanụ over- ma ọ bụ n'okpuru-arụmọrụ viscosity bụ detrimental na engine. Na ala engine nwere ike clog viscosity, na na a elu ọ bụ mgbe niile na-arụ ọrụ na elu okpomọkụ (n'ihi na nke mụbara esemokwu), nke accelerates na-eyi. Ke adianade do, okpomọkụ na-eme ka na-awụ ọsọ mmanụ ọxịdashọn, nke pụtara na ị chọrọ ịgbanwe ya ọzọ mgbe. The ojiji nke elu-viscosity mmanu a na-adịghị otú anya na-emetụta engine ọrụ. Ma ihe ga-eme - kpọmkwem. Ya mere, n'oge na ebe-achọ wụsa mmanụ dị ka emeputa na-atụ aro, n'agbanyeghị ihe ị na-ekwu ya ọrụ: ọ bụ uru na-ngafe nke akwụkwọ ikike oge, ị rụziri ala ụgbọ ala gị dị ka mgbe o kwere omume. Na-elekọta ụgbọala gị onwe gị.

Modern moto mmanụ ika ịnọgide na-enwe arụmọrụ maka 500-2000 awa nke engine ọrụ, nke ahụ bụ 12-45 puku kilomita. Nnọchi mmanu ga-erukwa n'out oge na mgbanwe nke nzacha na ụgbọ ala mmezi. Na nke a, na-aga n'ihu mma engine ọrụ ga-nyere (nyere ojiji nke a na-atụ aro ika emeputa).