Termeni Tehnici |
This topic is about Termeni Tehnici, the author, mihai79646, wrote about: Am avut de curind o situatie in care ,dupa cernavoda,la inceput de autostrada,am avut pana pe fatza dreapta cu Opelul astra 1.7dti (ce-i drept luat de ... To read more just scroll down
Termeni Tehnici |
Jul 31 2006, 01:47 AM
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#181
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sofer Group: Membri Posts: 56 Joined: 12-June 06 From: Bucuresti Member No.: 79.639 |
Drumul e si in lucru acolo,mai denivelat,un sg sens etc Mi-a mai povestit un amic cum la o acvaplavare partiala tot esp-ul i-a tinut directia ok,la un vectra 2.0dti Combinat fenomenul si cu o schimbare de asfalt care m-a facut sa cred ca nu e pana si am oprit dupa vreo 200m presupun,m-a costat un cauciuc nou goodyear de 15" adica 265 ron parca Daca nu e potrivita povestea pt aici,rog moderatorul sa o mute unde considera -------------------- reparatii ECU,calc de injectie si alte cele
posesor Astra Caravan y17dt |
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Jul 31 2006, 01:53 AM
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#182
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sofer Group: Membri Posts: 56 Joined: 12-June 06 From: Bucuresti Member No.: 79.639 |
QUOTE(popica70) QUOTE(HalbaSus) Da exista, singurele care imi vin acum in minte sunt motoarele SDI de la grupul VAG... dintr-un 1.9 SDI reusesc sa "stoarca" vre-o 70 cp... totally useless... dar sunt ieftine, fiabile si consuma putin. Ah... si mai avea ARO niste motoare diesel de vre-o 3000 cmc si aproape 80 de cp parca... Alea de ARO -model Brasov aveau vreo 65 cai parca, nu 80;dar un cuplu... urcam Dealul negru mare parte cu a 4-a -------------------- reparatii ECU,calc de injectie si alte cele
posesor Astra Caravan y17dt |
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Jul 31 2006, 08:44 AM
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#183
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Administrator Group: Root Admin Posts: 1.991 Joined: 23-April 04 Member No.: 2 |
Ce inseamna twinsport?
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Jul 31 2006, 08:57 AM
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#184
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specialist Group: Moderator Posts: 10.684 Joined: 29-March 04 From: Oradea (Bihor) Member No.: 23.122 |
QUOTE Variable Length Intake Manifold (VLIM) is an automobile engine manifold technology. As the name implies, VLIM can vary the length of the intake tract in order to optimize power and torque, as well as provide better fuel efficiency.
There are two main effects of variable intake geometry: * Swirl - Variable geometry can create a beneficial air swirl pattern in the combustion chamber. The swirls help distribute the fuel and form a homogeneous air-fuel mixture which ignites without engine knocking. At low rpm, the speed of the airflow is increased by directing the air through a longer path with limited capacity, but the shorter and more capable path opens when the load increases so that the greater amount of air can enter the chamber. In DOHC designs, the air paths are often connected to a separate intake valves so the shorter path can be excluded by inactivating the intake valve itself. * Pressurization - A tuned intake path can have a light pressurizing effect similar to a low-pressure supercharger due to Helmholtz resonance. However, this effect occurs only over a narrow engine speed band. A variable intake can create two or more pressurized hot spots, increasing engine output. Many automobile manufacturers use similar technology with different names. Another common term for this technology is Variable Resonance Induction System (VRIS). * Audi - 2.0 L I4, V6, V8 * Alfa Romeo - 2.0 TwinSpark 16v - 155 ps(114 kW) * BMW DIVA * Ferrari - 360 Modena, 550 Maranello * Ford DSI (Dual-Stage Intake) - on their Duratec 2.5 and 3.0 liter V6s, 2.0 liter Zetec four, and it was also found on the Yamaha V6 in the Taurus SHO. * Ford - Variable intake geometry in the modular engined (after 1996) Mustang Cobra. * GM Daewoo - DOHC versions of E-TEC II engines * Honda - Integra, Legend, NSX, Prelude * Hyundai - XG V6 * Jaguar - AJ-V6 * Mazda VICS (Variable Intake Control System) is used in the Mazda B engine family of straight-4, and VRIS (Variable Resistance Induction System) in the Mazda K engine family of V6 engines. An updated version of this technology is employed on the new Mazda Z engine, which is also used by Ford as the Duratec. * Mercedes-Benz * Mitsubishi Cyclone is used on the 2.0L I4 4G63 engine family. * Nissan V6 and V8 * Opel TwinPort - modern versions of Ecotec Family 1 and Ecotec Family 0 straight-4 engines; a similar technology is used in 3.2 L 54° V6 engine * Peugeot 2.2 L I4, 3.0 L V6 * Porsche VarioRam - 964, 993, 996, Boxster * Renault - Clio 2.0RS * Toyota T-VIS - (Toyota Variable Intake System) used on the 4A-GE family, notably in the MR2 * Volkswagen - 1.6 L I4, VR6, W8 sursa: wikipedia -------------------- Mercedes C320 CDI 4-matic
Audi A3 Sportback 1.9 TDI "Speed has never killed anyone. Suddenly becoming stationary... that's what gets you." -Jeremy Clarkson |
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Jul 31 2006, 09:05 AM
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#185
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specialist Group: Membri Posts: 3.222 Joined: 30-January 04 From: Bucuresti Member No.: 20.522 |
Tehnologia Twinport este in primul rand menita sa reduca in mod considerabil consumul.Aceasta tehnologie este dezvoltata de GM special pentru motoarele mici in 4 cilindrii cu 4 supape pe cilindru si foloseste un sistem de admisie variabila(variable intake control ) si un sistem ameliorat de recirculare a gazelor la evacuare.Acest tip de motor reduce consumul cu 10 % fata de un motor conventional si cu pana la 20 % daca masina este partial incarcata. -------------------- Opel Insignia Edition 2011 2.0 CDTI -130 C.P.
Suzuki SX4 Navi 2012 1,6 VVTI -120 C.P. ,,Realitatea e ruina unui basm.'' Lucian Blaga |
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Jul 31 2006, 10:06 AM
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#186
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specialist Group: Moderator Posts: 13.667 Joined: 30-June 04 From: Europa Member No.: 28.666 |
Twinport e cu injectie directa?! Tare am dubii...
Intake variabil au cam toate masinile acum. Pana si Nubira made in Ro are un asemenea sistem, care se cheama VGIS. -------------------- Scuter 108cc... benzina, automat
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Jul 31 2006, 10:53 AM
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#187
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specialist Group: Membri Posts: 3.222 Joined: 30-January 04 From: Bucuresti Member No.: 20.522 |
Fiecare constructor de masini l-a denumit cum a vrut,la fel ca si pe motoarele diesel.Primul motor cu injectie directa de la Opel este relativ nou,pus pe Vectra C ,Astra H si mai nou si pe Zafira B.
-------------------- Opel Insignia Edition 2011 2.0 CDTI -130 C.P.
Suzuki SX4 Navi 2012 1,6 VVTI -120 C.P. ,,Realitatea e ruina unui basm.'' Lucian Blaga |
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Jul 31 2006, 02:21 PM
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#188
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specialist Group: Membri Posts: 660 Joined: 17-July 06 From: Bucuresti Member No.: 82.588 |
a naibi piticanie chiar ca e supraalimentat. scuze nici nu am stiut ce am condus.....si aia de la dacia cand i-am intrebat cand va aparea o versiune supraalimentata mi-au zis ca in toamna.
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Aug 1 2006, 01:54 AM
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#189
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pilot Group: Membri Posts: 322 Joined: 12-February 06 From: etaj 1 Member No.: 68.018 |
OK...am lamurit dieselul normal aspirat, si cel cu turbina.Din ce s-a scris mai sus, si schitele aratate am vazut ca turbina are rol de a baga mai mult aer in cilindru! nu? sau mai mult amestec?(referitor la cel cu turbina si supergharged din schitele de mai sus).
Alta chestie care nu o inteleg...auzisem ca motorul turbo are si o conexiune speciala cu rezervorul + ca mai era era si faza cu reciclarea amestecului nears si bagat din nou la intuneric . Daca nu am postat unde trebuie ...scuze -------------------- Nissan Micra 1.3 SRI
BMW E46 Honda XL650V |
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Sep 6 2006, 10:21 PM
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#190
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sofer profesionist Group: Membri Posts: 169 Joined: 10-July 06 From: Timisoara Member No.: 82.075 |
Cu conexiunea aia speciala nu stiu ce e, dar este adevarat ca o parte din gazele de esapament se recircula, din motive ecologice.
-------------------- Mitsubishi EVO IX
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Sep 7 2006, 08:41 AM
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#191
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specialist Group: Moderator Posts: 13.667 Joined: 30-June 04 From: Europa Member No.: 28.666 |
Exista doua recirculari, indiferent de faptul ca motorul e diesel sau benzina, cu sau fara turbo:
Recircularea gazelor de esapament - din motive de ecologie - prin intermediul EGR-ului. (Exhaust gas recirculation). Asta exista cred de la masini euro2 in sus. Pentru sofer, EGR-ul e doar o bataie de cap care reduce performantele si se strica toata ziua Recircularea gazelor (nearse) din carter. Asta exista si la Moskwich si Dacie din 1900 toamna. La masinile mai cu pretentii se cheama PCV (positive crankcase ventilation) La unele masini gandide cu cealalta parte amandoua au interesanta proprietate de a infunda relentiul (indiferent ca e un simplu ventil, IAC sau MTIA). Depinde unde intra PCV-ul si EGR-ul pe admisie, inainte sau dupa respectivul dispozitiv. -------------------- Scuter 108cc... benzina, automat
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Sep 9 2006, 02:53 PM
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#192
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pilot Group: Membri Posts: 322 Joined: 12-February 06 From: etaj 1 Member No.: 68.018 |
Care mai stie...INJECTIA mono/multipunct...cum se realizeaza...diferente...intre caburator si injectie electronica
-------------------- Nissan Micra 1.3 SRI
BMW E46 Honda XL650V |
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Sep 16 2006, 07:31 PM
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#193
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pilot Group: Membri Posts: 322 Joined: 12-February 06 From: etaj 1 Member No.: 68.018 |
hai oameni buni....nu stie nimeni?
-------------------- Nissan Micra 1.3 SRI
BMW E46 Honda XL650V |
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Sep 19 2006, 09:16 PM
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#194
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sofer Group: Membri Posts: 85 Joined: 26-March 06 From: Sibiu (Sibiu) Member No.: 71.891 |
am ceva care va poate ajuta nu sunt termeni tehnici dar e o parte din manualul de mecanica de la scoala de soferi. unde trimit scanarile? cavalyere@yahoo.com
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Sep 20 2006, 02:54 AM
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#195
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specialist Group: Membri Posts: 4.583 Joined: 30-May 04 From: Honda World Member No.: 26.577 |
QUOTE(Armadyllo) Care mai stie...INJECTIA mono/multipunct...cum se realizeaza...diferente...intre caburator si injectie electronica
injectia monopunct se face intr-o galerie comuna de unde ajunge in galeriile fiecarui cilindru ( practic cam la fel cu un carburator care la fel realizeaza amestecul carburant pentru toti sau mai multi cilindri; ex. V6-V8-urile americane de acu' 50 de ani aveau 2-4 carburatoare)... injectia multipunct se face dedicat fiecarui cilindru in galeria acestuia de admisie. -------------------- Civic Si 2007 2.0l DOHC iVTEC
Acura TL 2006 3.2l SOHC VTEC |
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Sep 20 2006, 03:01 AM
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#196
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specialist Group: Membri Posts: 4.583 Joined: 30-May 04 From: Honda World Member No.: 26.577 |
QUOTE(Jeff) Cu conexiunea aia speciala nu stiu ce e, dar este adevarat ca o parte din gazele de esapament se recircula, din motive ecologice.
EGR-ul imbunatateste si caracteristicile arderii. previne de ex. autoaprinderea ( la benzinare) si creste eficienta totala a arderii ( la benzinare si diesele). iar anumite motoare de performanta ( mai ales cele turbo) nu ar putea functiona corect fara EGR din cauza supraincalzirii. tot la turbo EGR-ul pemite aplatiizarea curbei cuplu-turatie ( se recircula mai multe gaze la turatii medii) astfel incat se poate atenua turbolag-ul. amestecul carburant indoit cu gaze de ardere recirculate arde mai putin violent si genereaza temperaturi mai scazute. in plus emisiile sunt si ele imbunatatite. deci EGR prezinta multiple avantaje. -------------------- Civic Si 2007 2.0l DOHC iVTEC
Acura TL 2006 3.2l SOHC VTEC |
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Sep 21 2006, 02:45 PM
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#197
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specialist Group: Moderator Posts: 13.667 Joined: 30-June 04 From: Europa Member No.: 28.666 |
EGR-ul creste intr-adevar eficienta arderii, insa nu si puterea maxima. E important pentru economie (si ecologie), insa nu pentru performante... probabil e unul din factorii care a dus in general la scaderea puterilor cu normele de poluare.
Majoritatea tunerilor de motoare il dribleaza, electronic sau chiar mecanic. Pentru mai multe detalii, e un link aici http://en.wikipedia.org/wiki/Exhaust_gas_recirculation -------------------- Scuter 108cc... benzina, automat
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Sep 21 2006, 02:58 PM
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#198
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specialist Group: Membri Posts: 4.583 Joined: 30-May 04 From: Honda World Member No.: 26.577 |
la turatii mari ( unde se ating puterile maxime) EGR-ul este de regula dezactivat oricum de motoare. EGR-ul optimizeaza functionarea motorului la turatii mici si medii.
-------------------- Civic Si 2007 2.0l DOHC iVTEC
Acura TL 2006 3.2l SOHC VTEC |
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Sep 27 2006, 12:52 PM
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#199
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sofer profesionist Group: Membri Posts: 232 Joined: 23-January 06 From: Bucuresti Member No.: 66.172 |
imi explica cineva si mie ce e aia "cilindree"?
nici macar nu stiu cum se citeste.... am tot auzit vorbindu-se da' habar nu am ce e, cum se masoara etc -------------------- Skoda Octavia Tour- 1.9TDi, 90 CP
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Sep 27 2006, 01:13 PM
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#200
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Warp Member Group: Membri de onoare Posts: 4.752 Joined: 9-May 03 From: Bucuresti Member No.: 12.270 |
cilindrea este volumul total al cilindrilor.
uite poza alaturata spre exemplificare. are 4 cilindri de compresie. fiecare cilindru, prin miscarea lui, modifica volumul camerei de combustie, rezultand un volum maxim si un volum minim. diferenta dintre aceste doua volume da "cilindreea" adica capacitatea cilindrica. cilindrea unui motor este data de suma tuturor volumelor de ardere pe fiecare cilindru in parte. adica, daca avem un motor de 4 cilindri, fiecare cu 500cm (adica 0.5l) volum deplasat, atunci intregul motor are 4x500=2000cmc (2l) capacitate cilindrica. -------------------- |
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