Bujii NGK 2789(0031597503)

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:

MERCEDES-BENZ SL (R129) 280 (129.058) 1993-2001 193CP (142 KW) 2799cmc,

MERCEDES-BENZ SL (R129) 320 (129.063) 1993-2001 231CP (170 KW) 3199cmc,

MERCEDES-BENZ C-CLASS (W202) C 180 (202.018) 1993-2000 122CP (90 KW) 1799cmc,

MERCEDES-BENZ C-CLASS (W202) C 280 (202.028) 1993-2000 193CP (142 KW) 2799cmc,

VW PASSAT (3A2, 35I) 1.6 1994-1996 101CP (74 KW) 1595cmc,

VW PASSAT Variant (3A5, 35I) 1.6 1994-1995 101CP (74 KW) 1595cmc,

VW GOLF III (1H1) 1.6 1995-1997 101CP (74 KW) 1595cmc,

VW GOLF III Variant (1H5) 1.6 1994-1999 101CP (74 KW) 1595cmc,

VW GOLF III Cabriolet (1E7) 1.6 1994-1998 101CP (74 KW) 1595cmc,

MERCEDES-BENZ C-CLASS (W202) C 200 (202.020) 1994-2000 136CP (100 KW) 1998cmc,

MERCEDES-BENZ SPRINTER 2-t Bus (901, 902) 214 1995-2006 143CP (105 KW) 2295cmc,

MERCEDES-BENZ C-CLASS (W202) C 180 (202.018) 1994-2000 121CP (89 KW) 1799cmc,

MERCEDES-BENZ E-CLASS (W210) E 200 (210.035) 1995-2000 136CP (100 KW) 1998cmc,

MERCEDES-BENZ C-CLASS combi (S202) C 180 T (202.078) 1996-2000 122CP (90 KW) 1799cmc,

MERCEDES-BENZ C-CLASS combi (S202) C 200 T (202.080) 1996-2001 136CP (100 KW) 1998cmc,

MERCEDES-BENZ E-CLASS combi (S210) E 200 T (210.235) 1996-2000 136CP (100 KW) 1998cmc,

MERCEDES-BENZ SLK (R170) 200 (170.435) 1996-2000 136CP (100 KW) 1998cmc,

VW TRANSPORTER IV Bus (70XB, 70XC, 7DB, 7DW) 2.5 Syncro 1996-2003 115CP (85 KW) 2461cmc,

VW TRANSPORTER IV Bus (70XB, 70XC, 7DB, 7DW) 2.5 1996-2003 115CP (85 KW) 2461cmc,

MERCEDES-BENZ CLK (C208) 200 (208.335) 1997-2002 136CP (100 KW) 1998cmc,

MERCEDES-BENZ A-CLASS (W168) A 140 (168.031, 168.131) 1997-2004 82CP (60 KW) 1397cmc,

MERCEDES-BENZ A-CLASS (W168) A 160 (168.033, 168.133) 1997-2004 102CP (75 KW) 1598cmc,

MERCEDES-BENZ SPRINTER 2-t platou/sasiu (901, 902) 214 1995-2006 143CP (105 KW) 2295cmc,

MERCEDES-BENZ SPRINTER 2-t caroserie (901, 902) 214 1995-2006 143CP (105 KW) 2295cmc,

MERCEDES-BENZ SPRINTER 3-t caroserie (903) 314 1995-2006 143CP (105 KW) 2295cmc,

VW TRANSPORTER IV platou/sasiu (70XD) 2.5 1996-2003 115CP (85 KW) 2461cmc,

VW TRANSPORTER IV platou/sasiu (70XD) 2.5 Syncro 1996-2003 115CP (85 KW) 2461cmc,

VW TRANSPORTER IV caroserie (70XA) 2.5 1996-2003 115CP (85 KW) 2461cmc,

VW TRANSPORTER IV caroserie (70XA) 2.5 Syncro 1996-2003 115CP (85 KW) 2461cmc,

VW LT 28-35 II Bus (2DB, 2DE, 2DK) 2.3 1996-2006 143CP (105 KW) 2295cmc,

VW LT 28-46 II caroserie (2DA, 2DD, 2DH) 2.3 1996-2006 143CP (105 KW) 2295cmc,

VW LT 28-46 II platou/sasiu (2DC, 2DF, 2DG, 2DL, 2DM) 2.3 1996-2006 143CP (105 KW) 2295cmc,

MERCEDES-BENZ M-CLASS (W163) ML 230 (163.136) 1998-2005 150CP (110 KW) 2295cmc,

MERCEDES-BENZ CLK Cabriolet (A208) 200 (208.435) 1998-2002 136CP (100 KW) 1998cmc,

VW GOLF IV Cabriolet (1E7) 1.6 1998-2002 100CP (74 KW) 1595cmc,

MERCEDES-BENZ A-CLASS (W168) A 190 (168.032, 168.132) 1999-2004 125CP (92 KW) 1898cmc,

MERCEDES-BENZ SPRINTER 3-t caroserie (903) 314 NGT 2000-2006 125CP (92 KW) 2295cmc,

MERCEDES-BENZ SPRINTER 4-t Bus (904) 414 1996-2006 143CP (105 KW) 2295cmc,

MERCEDES-BENZ SPRINTER 4-t platou/sasiu (904) 414 1996-2006 143CP (105 KW) 2295cmc,

MERCEDES-BENZ SPRINTER 4-t platou/sasiu (904) 414 4x4 1997-2006 143CP (105 KW) 2295cmc,

MERCEDES-BENZ SPRINTER 4-t caroserie (904) 414 1996-2006 143CP (105 KW) 2295cmc,

MERCEDES-BENZ SPRINTER 4-t caroserie (904) 414 4x4 1997-2006 143CP (105 KW) 2295cmc,

MERCEDES-BENZ A-CLASS (W168) A 140 (168.031, 168.131) 2001-2004 82CP (60 KW) 1598cmc,

MERCEDES-BENZ VANEO (414) 1.6 (414.700) 2002-2005 102CP (75 KW) 1598cmc,

MERCEDES-BENZ VANEO (414) 1.6 (414.700) 2002-2005 82CP (60 KW) 1598cmc,

MERCEDES-BENZ VANEO (414) 1.9 (414.700) 2002-2005 125CP (92 KW) 1898cmc,

MERCEDES-BENZ A-CLASS (W168) A 210 (168.035, 168.135) 2002-2004 140CP (103 KW) 2084cmc,