Bujii EYQUEM 0910004018

La motoarele cu alimentare pe benzina , bujia , reprezinta elementul sistemului de aprindere , care are rolul de a produce scanteie , intre electrozii acesteia , care sa aprinda amestecul carburant din camera de ardere . O bujie , se compune dintr-un electrod pozitiv , amplasat central , alimentat de bobina de inductie , unul lateral , negativ , legat la corpul bujiei , corpul metalic exterior , care se insurubeaza in chiulasa , izolator ceramic , care izoleaza electrodul central , garnituri de etansare din praf de caolin presat , amplasate in zona de contact dintre corpul metalic al bujiei si izolatorul ceramic si piulita de contact , prin care se alimenteaza bujia . Bujia , indeplineste un rol esential , in functionarea motorului , alegandu-se functie de caracteristicile acestuia . Daca o bujie este prost aleasa , incalzirea izolatorului la temperaturi de peste 900 de grade celsius , poate duce la aprinderi secundare ale amestecului carburant , cauzand motorului pierderi de putere si o functionare cu batai . Bujia este dimensionata sa respecte mai multe cerinte : - valoarea termica , care reflecta capacitatea bujiei de a transmite caldura din camera de ardere , inspre mediul ambiant , ea fiind supusa , in timpul functionarii , unor solicitari termice extreme , datorate diferentelor de temperatura dintre partea care intra in camera de ardere si partea expusa mediului exterior . -rezistenta mare la solicitari electrice , aprox 5000 de volti in timpul functionarii normale ,putand ajunge , pana la 12000 de volti , la pornirea de la rece . -solicitari mecanice , care intervin in cilindri , datorita variatiei presiunii gazelor , dar si a trepidatiilor , care apar in timpul functionarii . Se deosebesc doua tipuri de bujii , calde si reci ., cele calde avand valori termice mai mari . Durata de viata a unui set de bujii este de aproximativ 60.000 de kilometri . La motoarele noi , generarea scanteii la fiecare bujie , este controlata de catre calculatorul de injectie . -

Pentru:

ALFA ROMEO GTV (116_) 6 2.5 (116.CA) 1980-1987 158CP (116 KW) 2492cmc,

ALFA ROMEO 75 (162B_) 3.0 V6 (162.B6A) KAT 1987-1992 185CP (136 KW) 2959cmc,

ALFA ROMEO ALFETTA (116_) 2.0 (116.55F, 116.56F, 116.55N, 116.56N) 1978-1984 132CP (97 KW) 1962cmc,

ALFA ROMEO GIULIETTA (116_) 1.6 (116.50B) 1977-1985 107CP (79 KW) 1570cmc,

ALFA ROMEO GIULIETTA (116_) 1.8 (116.AA, 116.AB) 1979-1985 122CP (90 KW) 1779cmc,

ALFA ROMEO GTV (116_) 2.0 1978-1986 131CP (96 KW) 1962cmc,

ALFA ROMEO SPIDER (115_) 2000 1986-1990 116CP (85 KW) 1962cmc,

ALFA ROMEO SPIDER (115_) 2000 1986-1990 125CP (92 KW) 1962cmc,

ALFA ROMEO SPIDER (115_) 2000 Veloce 1977-1993 126CP (93 KW) 1962cmc,

ALFA ROMEO SPIDER (115_) 2000 1990-1993 120CP (88 KW) 1962cmc,

FORD TRANSIT Bus (72E, 73E) 1.7 FT 100 (72E2A) 1971-1978 65CP (48 KW) 1699cmc,

AUDI 50 (86) 1.1 1974-1978 50CP (37 KW) 1093cmc,

AUDI 50 (86) 1.3 1977-1978 60CP (44 KW) 1272cmc,

AUDI 80 (81, 85, B2) 1.3 1978-1981 55CP (40 KW) 1272cmc,

AUDI 80 (81, 85, B2) 1.6 1978-1983 85CP (63 KW) 1588cmc,

AUDI 100 (44, 44Q, C3) 1.9 1982-1984 100CP (74 KW) 1921cmc,

VW POLO (86C, 80) 1.0 1981-1986 40CP (29 KW) 1043cmc,

VW DERBY (86C, 80) 1.0 1981-1984 40CP (29 KW) 1043cmc,

VW DERBY (86C, 80) 1.3 1983-1984 55CP (40 KW) 1272cmc,

VW PASSAT (32B) 1.3 1980-1986 60CP (44 KW) 1272cmc,

VW POLO Coupe (86C, 80) 1.0 1982-1986 40CP (29 KW) 1043cmc,

VW POLO Coupe (86C, 80) 1.3 KAT 1987-1994 55CP (40 KW) 1272cmc,

FIAT DUCATO Panorama (280_) 2.0 1986-1990 75CP (55 KW) 1971cmc,

FIAT DUCATO Panorama (280_) 2.0 1982-1985 79CP (58 KW) 1971cmc,

VW POLO CLASSIC (86C, 80) 1.0 1985-1986 40CP (29 KW) 1043cmc,

VW POLO CLASSIC (86C, 80) 1.3 KAT 1987-1994 55CP (40 KW) 1272cmc,

AUDI 100 Avant (44, 44Q, C3) 1.9 1983-1984 100CP (74 KW) 1921cmc,

FIAT DUCATO Panorama (290_) 2.0 1990-1994 84CP (62 KW) 1971cmc,

FORD TRANSIT Bus (72E, 73E) 1.5 900 (7300) 1965-1973 60CP (44 KW) 1488cmc,

FORD TRANSIT Bus (72E, 73E) 1.5 1000 (72E2A) 1968-1973 60CP (44 KW) 1488cmc,

FORD TRANSIT caroserie (72E, 71E) 1.5 (72E1A) 1971-1973 60CP (44 KW) 1498cmc,

AUDI 80 (81, 85, B2) 2.2 1980-1983 115CP (85 KW) 2144cmc,

FIAT DUCATO Panorama (280_) 2.0 1988-1990 84CP (62 KW) 1971cmc,

FIAT DUCATO caroserie (280_) 2.0 1985-1990 75CP (55 KW) 1971cmc,

FIAT DUCATO caroserie (280_) 2.0 1982-1990 79CP (58 KW) 1971cmc,

FIAT DUCATO caroserie (280_) 2.0 1989-1990 84CP (62 KW) 1971cmc,

FIAT DUCATO platou/sasiu (290_) 2.0 1990-1994 84CP (62 KW) 1971cmc,

VW GOLF II (19E, 1G1) 1.3 KAT 1986-1992 55CP (40 KW) 1272cmc,

VW JETTA II (19E, 1G2, 165) 1.3 KAT 1987-1991 55CP (40 KW) 1272cmc,

VW POLO Coupe (86C, 80) 1.3 1983-1987 55CP (40 KW) 1272cmc,

VW POLO CLASSIC (86C, 80) 1.3 1985-1987 55CP (40 KW) 1272cmc,

ALFA ROMEO 90 (162_) 2.0 i.e. 1984-1987 132CP (97 KW) 1997cmc,

VW GOLF II (19E, 1G1) 1.0 1983-1985 45CP (33 KW) 1043cmc,

FORD TRANSIT platou/sasiu (74E) 1.5 1971-1973 60CP (44 KW) 1498cmc,

FORD TRANSIT caroserie (72E, 71E) 1.7 FT 100 1971-1978 65CP (48 KW) 1699cmc,

FORD TRANSIT platou/sasiu (74E) 1.7 FT 100 1971-1978 65CP (48 KW) 1699cmc,

AUDI COUPE (81, 85) 1.6 1980-1981 75CP (55 KW) 1588cmc,

VW JETTA II (19E, 1G2, 165) 1.3 1984-1986 58CP (43 KW) 1272cmc,

FIAT DUCATO Panorama (280_) 1.8 1982-1988 69CP (51 KW) 1796cmc,

FIAT DUCATO platou/sasiu (280_) 2.0 1985-1990 75CP (55 KW) 1971cmc,

FIAT DUCATO platou/sasiu (280_) 2.0 1988-1990 84CP (62 KW) 1971cmc,

ALFA ROMEO 90 (162_) 2.5 i.e. V6 1984-1987 156CP (114 KW) 2492cmc,

AUDI COUPE (81, 85) 2.1 GT 1981-1983 107CP (79 KW) 2144cmc,

AUDI 80 (81, 85, B2) 1.6 1978-1981 70CP (51 KW) 1588cmc,

AUDI 80 (81, 85, B2) 1.6 1978-1986 75CP (55 KW) 1588cmc,

AUDI 80 (81, 85, B2) 1.3 1978-1981 60CP (44 KW) 1272cmc,