The Camshaft angle ka likoloi tsa BMW ke tekanyo ea bohlokoa, e lateloang ke Camshaft Boemo ba kutlo. Sensor ena e thusa yuniti ea taolo ea enjene (ECU) ho supa boemo le nako ea Camshaft, e leng bohlokoa bakeng sa lienjine tse nang le lisebelisoa tse fapaneng tsa nako ea li-valve joalo ka VANOS.
Camshaft Angle ho Idle
- Mehlala e mengata ea BMW, joalo ka Enjene ea M52B28 ka E36 328i, Camshaft angle ka tloaelo 16-20 digrama ka ho se sebetse.
Angle ea Camshaft Nakong ea Revving
- Ha enjene RPM e phahama, angle ea Camshaft ea fetoha. Bakeng sa Enjene ea M52B28, lehlakoreng la Camshaft le eketseha hoo e ka bang 40-45 digrama ha enjene e fihla 3-4k RPM.
Tšusumetso ea ho Balla Angle ea Camshaft e Fosahetseng
- Ho baloa ka li-angle tse fosahetseng tsa Camshaft kapa ho hloka phetoho ka RPM ho ka lebisa mathateng a hlokomelehang a enjine:
- Karabelo e mpe ea throttle
- Ho hloka matla tlase 3.5k RPM
- Ts'ebetso e fokolang ea enjine
- ho ka khonehang ho thunya ka bongata ba liente, e ka 'nang ea utloahala eka ke ho tekena.
Sistimi ea VANOS le Angle ea Camshaft
- Tsela e nepahetseng ea Camshaft e bohlokoa bakeng sa Sistimi ea VANOS ho sebetsa hantle. Sensor e fosahetseng e ka baka ho bala ho fosahetseng, ho ka thibelang VANOS ho sebetsa, ho lebisa mathateng a ts'ebetso.
Ho fetola Sensor e Fosahetseng ea Camshaft
- Haeba sensor ea Camshaft e fosahetse, ho e nkela sebaka ka karolo ea 'nete ea BMW kapa khetho ea boleng bo holimo e ka lokisa bothata.
- Li-sensor tsa pele tsa BMW Camshaft hangata li etsoa ke SWF (Valeo), Vemo, kapa AB Electronick. Li-brand tse tšepahalang tsa aftermarket tse kang VNE or Hella ke likhetho tse ntle bakeng sa ho nka sebaka.
Tlhaloso le Morero
The camshaft angle ka likoloi tsa BMW e bua ka boemo ba Camshaft mabapi le Crankshaft. Sena ke sa bohlokoa haholo-holo ka mehlala e nang le Mefuta e fapaneng ea Nockenwellen Steuerung (VANOS) tsamaiso. VANOS e ntlafatsa ts'ebetso ea enjine ka ho lokisa boemo Camshaft nako, e lebisang ts'ebetsong e ntle ea mafura, matla a mangata, le ho fokotsa mesi.
Morero oa Sisteme ea VANOS:
- Ntlafatso ea Ts'ebetso ea Enjine: Ho fetola sekhutlo sa Camshaft ho thusa ho ntlafatsa nako, ho matlafatsa ts'ebetso ea enjene ka kakaretso.
- Tšebeliso e Ntle ea Mafura: VANOS e lokisa nako ea Camshaft ho fokotsa tšebeliso ea mafura.
- Metsi a Tlase: Litokiso tse nepahetseng tsa nako li lebisa mollong o hloekileng, ho fokotsa mesi.
Karolo ea Li-Sensors tsa Boemo ba Camshaft:
- Ho lumellana: Li-Sensors tsa Boemo ba Camshaft li romella data ea nako ea nnete ho Mojule oa taolo ea enjene (DME) ho netefatsa nako e nepahetseng pakeng tsa Camshaft le Crankshaft.
- Taolo ea Nako ea Valve: Lintlha tsena li lumella DME ho laola nako ea li-valve ka nepo, ho netefatsa hore enjene e sebetsa hantle.
Angle e boletsoeng
Tsamaisong ea enjene ea BMW, the Angle e boletsoeng ke senotlolo sa ho ntlafatsa ts'ebetso ea enjine. The Digital Motor Electronics (DME) lekanya angle ena e thehiloeng ho Crankshaft boemo le data ea sensor ho fihlela katleho e kholo.
- The Sepheo sa Eccentric Shaft Angle e behiloe ke DME ho latela boemo ba enjene. Mohlala, nakong ea ho qala, DME e lokisa Eccentric Shaft ho potoloha Li-degrees tsa 45 bakeng sa ho phahamisa throttle kapa valve ho feta. Ka mor'a ho qala, angle e theohela hoo e ka bang Li-degrees tsa 30, le ho feta ho 19-20 digrama nakong e futhumetseng e sa sebetse. E ka phahama ho potoloha Li-degrees tsa 26 ha valve ea compressor e sebetsa.
- Ena angle e boetse e ama nako ea ente. Sebaka sa "Angle Specifies" se beha nako ea ente ho "Qetelo ea Squirt," "Bohareng ba Squirt," kapa "Qalo ea Squirt." "End of Squirt" ea kamehla e tiisa hore mafura a kenngoa hantle pele ho setsi sa holimo sa bafu (TDC).
Kameho ea RPM ho Nako ea Injector
Litokiso tsa RPM li baka tieho ea mouoane oa mafura, joalo ka ha ho bonoa ka tlase: - 1000 RPMlikhato tse 48 - 2000 RPMlikhato tse 96 - 3000 RPMlikhato tse 144 - 4000 RPMlikhato tse 192 - 5000 RPMlikhato tse 240 - 6000 RPMlikhato tse 288 - 7000 RPM: Li-degree tsa 336
- Ho beha ka nepo sekhutlo se boletsoeng e ntlafatsa atomization ea mafura le bokhoni ba enjene. Ho lokisa nako ea ente ka 30-40 digrama e ka fetola haholo Air-Fuel Ratio (AFR), kahoo tokiso e nepahetseng e bohlokoa bakeng sa ts'ebetso e nepahetseng.
Angle ea 'Nete ea Camshaft ho BM3
The angle ya sebele ea Camshaft e bua ka boemo ba eona bo nepahetseng bo amanang le Crankshaft ka nako efe kapa efe. Kamano ena ke ea bohlokoa bakeng sa ts'ebetso ea enjene e bonolo. Ka tlase ke lintlha tsa bohlokoa mabapi le Camshaft's angle angle:
Kamano ea Camshaft le Crankshaft
- Camshaft e potoloha hanngoe bakeng sa liphetohelo tse ling le tse ling tse peli tsa Crankshaft, e boloka tekanyo ea 1: 2 ka ketane ea nako le li-sprockets. Karo-karolelano ena e tiisa nako e nepahetseng ea li-valve tsa ho kena le ho tsoa ha enjene.
Ho lokisa Camshaft
- Ho lekanya angle ea sebele, o hloka ho fumana Top Dead Center (TDC) ea # 1 silindara e sebelisang a lebili la degree, e leng sesupa se emeng, 'Me le sesupo sa ho letsa. Ts'ebetso ena e thusa ho netefatsa hore boemo ba Camshaft bo lekantsoe ka nepo.
Phapang ho Specification
- Nako e sa nepahalang ea Camshaft e ka baka mathata a enjine joalo ka ho se sebetse ka thata kapa ho fosa. Ka mohlala, ka enjene ea Porsche 996, ho kheloha ha -12.53 li-degree tsa Camshaft bank 1 le 3.05 Li-degree tsa Camshaft bank 2 li ile tsa fumanoa, tse lebisang ho senyeheng ha mollo.
Ho lokisa boemo ba Camshaft
- Sebaka sa Camshaft se lokela ho ba haufi le sona Li-degrees tsa 0.00. Ka mor'a ho lokisa nako, sepheo ke ho ba le 0.00 kheloha bakeng sa maemo a mabeli a Camshaft ho netefatsa hore enjene e sebetsa hantle.
Ho potoloha ha Crankshaft le ho hlahloba hape
- Kamora ho lokisa banka e le 'ngoe ea Camshaft, potoloha Crankshaft Li-degrees tsa 360 pele o hlahloba kapa o lokisa banka e nngwe. Mohato ona o thibela liphoso litokisong tsa nako.
Liphetoho tse Iterative le TDC
- Ho fumana TDC, potoloha Crankshaft ho fihlela piston e fihla sebakeng sa eona se phahameng ka ho fetesisa, ebe u tima sesupo sa ho daela ebe u bala likhato ka mahlakoreng a mabeli a TDC. Haeba 'malo o se na symmetrical, etsa liphetoho ho fihlela Camshaft e hokahane hantle.
Qetello ea ho Qetela
- Hang ha Camshaft e hokahane le ho kheloha ho lokisoa, lumella ho DME (yuniti ea taolo ea enjine) ho ithuta hape litlhophiso tse ncha tsa Camshaft. Sena se thusa enjene ho sebetsa hantle.
Reference angle
The Reference angle ka enjene ea BM3 ke Camshaft angle ha solenoid e le boemong ba yona ba ho se nke lehlakore. Sena se etsahala ha khatello ea oli e lekana mahlakoreng ka bobeli a piston ea VANOS.
Base Angle
Reference Angle ke eona ntlha ea motheo, tseo ho tsona likhutlo tse ling tsa bohlokoa—tse kang Angle ea 'Nete le Angle e boletsoeng- fapana nakong ea ts'ebetso ea enjine. Li-angles tsena li lekantsoe ka Reference Angle.
Boemo ba ho se nke lehlakore
Karolo ena e ka boela ea e-ba boemo ba Camshaft ha enjene e tima, 'me solenoid e khutlela ho se nke lehlakore. Boemong bona, sistimi ea VANOS ha e fetole maemo a eona ka mafolofolo Camshaft.
Ho khaotsa
The Angle ea 'Nete 'me Angle e boletsoeng e ka fetoha hantle kapa hampe ho tloha ho Reference Angle, e bonts'ang Camshaft motsamao nakong ya tshebetso ya enjene.
Ho Hlahlobisisa Mathata
Haeba li-angles tsa 'Nete le tse Khethiloeng li le haufi le tse ling empa li le hole le Reference Angle, e ka supa bothata ka sistimi ea VANOS kapa li-sensor tsa Camshaft. Ka mohlala: - Inlet Angle ea 'Nete: 112.5° - Angle e boletsoeng: 112.2° - Reference angle: 123.1 °
Lekhalo lena la bohlokoa le tsoang ho Reference Angle le fana ka maikutlo a hore Camshaft e kanna ea se be boemong bo lebelletsoeng ba ho se nke lehlakore, mohlomong ho bontša ho se sebetse hantle.
papiso
Haeba li-angles tsa 'Nete le tse boletsoeng li lumellana hantle, li-sensor tsa Camshaft le VANOS li kanna tsa sebetsa hantle. Leha ho le joalo, phapang e kholo lipakeng tsa li-angles tsena le Reference Angle e ka hloka tlhahlobo e eketsehileng ho thibela mathata a enjene.
Boleng ba Flank
The flank value ho Camshaft Position Sensors le nako ea enjine e bolela phapang lipakeng tsa maemo a 'nete le a lebelletsoeng a Camshaft. Mohlala, ka enjene ea Porsche, e N050_Camshaft e kheloha of -3.00 likhato e bonts'a phapang ea 3-degree ho tloha boemong bo lebelletsoeng ho Bank 2.
Mathata a Nako ea Mechini
- Haeba tlhahlobo ea 'mele e senola hore lisebelisoa tse kang crank pin kapa flat bar ha li tsamaellane le li-slots tsa Camshaft, ho bontša bothata ba nako, mohlomong bo amanang le boleng ba flank. Ho se lumellane ho bonts'a Camshaft ha e maemong a nepahetseng.
Botšepehi ba Motlakase le Litaba tsa Sensor
- Sheba mohala oa sensor ea Camshaft bakeng sa litšitiso leha e le life. Tsoelo-pele lipakeng tsa sensor le li-pins tsa Engine Control Unit (DME) li tlameha ho ba tse tiileng. Shorts kapa tšitiso e ka baka ho kheloha ha boemo ba Camshaft.
- Haeba sensor ea Camshaft e fana ka lets'oao le sa utloahaleng, e ka baka likhoutu tsa liphoso joalo ka P0341. Letšoao le phahameng kapa le tlaase le ka lebisa ho P0342 or P0343 liphoso, tse ka 'nang tsa hokela ho kheloha ha boleng ba flank.
Ho etsa liteko le ho fetola li-Sensors tsa Camshaft
- Sebelisa multimeter ho lekola khanyetso ho pholletsa le li-sensor pins (tse behiloeng ho 20k ohms) ho netefatsa boemo ba sensor. Haeba ho sa baloe, sensor e kanna ea fosahala mme ea baka litekanyetso tse fosahetseng tsa flank.
- Haeba sensor e fosahetse, ho ka hlokahala ho e nchafatsa le ho e lokisa hape. The CASE (Crank Angle Sensor Error) ithute hape ts'ebetso e kanna ea hloka ho etsoa ho sebelisoa sehatisi sa OBD-II ho seta boemo ba Camshaft bocha.
Ts'ebeliso ea Ts'oaetso
Camshaft angle diagnostics ho BM3 ke ea bohlokoa bakeng sa ho lemoha litaba ka tsamaiso ea VANOS le Camshaft Boemo ba kutlos. Phapang e hlokomelehang lipakeng tsa li-angles tsa 'nete le tse boletsoeng tsa Camshaft hangata li bonts'a ho se sebetse hantle.
Melao e Tloaelehileng ea Tlhahlobo le Matšoao
- P1520, P1523, P1397: Likhoutu tsena li fana ka maikutlo a litaba ka VANOS solenoids kapa Camshaft Position Sensors ka lienjineng tse kang N52, N54, N55, le N62.
- P0011 ho ea ho P0025: E tloaelehileng lienjineng tse ncha tse nang le VANOS tse peli le Valvetronic, likhoutu tsena li supa mathata a VANOS solenoids kapa Camshaft sensors.
- Likhoutu tsa 2A82 le 2A87: Bontša phoso ea VANOS solenoids, e ka hlokang ho nkeloa sebaka.
- Likhoutu tsa P0012 le P0015: Tsena li fana ka maikutlo a litaba ka Camshaft Position Sensor (CMP) kapa VANOS solenoids. Ho fetola li-solenoids ho ka thusa ho supa karolo e fosahetseng.
Mekhoa ea Tlhahlobo
- Teko ea Sensor ea Boemo ba Camshaft:
- Sebelisa voltmeter ho hlahloba letšoao le lithapo tsa fatše. Ho bala hantle ho lokela ho bonts'a mohala oa 5-volt le mohala oa 12-volt. Ha ntho ea tšepe e le haufi le sensor, voltage e lokela ho theohela ho zero, e bontšang hore e sebetsa hantle.
- Haeba ho se na lets'oao, sensor e kanna ea fosahala, kapa fuse e ka letsoa.
- Ho fetola VANOS Solenoids: Fapanya ho kenya le ho qeta VANOS solenoids ho bona hore na e na le phoso. Kaha li ka fapanyetsana, sena se ka fokotsa kapa sa rarolla bothata.
Lisebelisoa le Litšenyehelo
- BMW Scan Tool: Sesebelisoa sa BMW se khethehileng sa ho hlahloba se ka fana ka lintlha tse qaqileng tse amanang le tsamaiso ea VANOS, ho thusa ho khetholla pakeng tsa solenoid le litaba tsa sensor.
- Litšenyehelo tsa Phetolo: Li-solenoids tsa 'nete tsa BMW VANOS li bitsa $300 e le 'ngoe. Kakaretso ea litšenyehelo tsa ho khutlisa li ka fapana - ho tloha ho $20 bakeng sa litokiso tse nyane ho isa ho $1500 bakeng sa litokiso tse rarahaneng.
Ka ho latela mehato ena, o ka hlahloba le ho rarolla mathata a angle ea Camshaft lits'ebetsong tsa BM3.
Litlhahlobo tsa khafetsa tsa tlhahlobo, joalo ka ho lekola Camshaft Position Sensor le ho hlahloba VANOS solenoids, li ka thusa ho thibela mathata a ts'ebetso joalo ka ho se sebetse hantle, karabelo e mpe ea throttle, le khaello ea matla. Haeba mathata a hlaha, ho nchafatsoa ha sensor ka nako le ho lokisoa ha sistimi ho bohlokoa ho etsa bonnete ba hore ts'ebetso e sebetsa hantle.
Bakeng sa li-sensor tse tšepahalang tsa Camshaft le likarolo tse ling tse ncha, nahana ka likarolo tsa 'nete tsa BMW kapa likhetho tse tšepahalang tsa mebaraka tse tsoang mefuteng e kang SWF, Vemo le Hella. Etela Matla a Volgen ho hlahloba likarolo tsa enjene ea boleng bo holimo, ho netefatsa hore BMW ea hau e tsoela pele ho sebetsa ka hohle kamoo e ka khonang.
