{"id":1357,"date":"2023-08-22T10:00:09","date_gmt":"2023-08-22T10:00:09","guid":{"rendered":"https:\/\/www.motointegrator.fi\/blog\/\/?p=1357"},"modified":"2025-08-29T11:38:18","modified_gmt":"2025-08-29T11:38:18","slug":"lambda-anturin-toiminta-ja-viallisten-osien-vaikutukset","status":"publish","type":"post","link":"https:\/\/www.motointegrator.fi\/blog\/lambda-anturin-toiminta-ja-viallisten-osien-vaikutukset\/","title":{"rendered":"Lambda-anturin toiminta ja viallisten osien vaikutukset"},"content":{"rendered":"<p><span data-contrast=\"auto\">Nykyaikaiset moottorit toimivat eritt\u00e4in taloudellisesti ja tasapainoisen polttoaine-ilmasuhteen avulla, mink\u00e4 vuoksi lambda-anturi on v\u00e4ltt\u00e4m\u00e4t\u00f6n. Vian sattuessa t\u00e4m\u00e4 voi johtaa muun muassa moottorin suorituskyvyn heikkenemiseen tai polttoaineen kulutuksen lis\u00e4\u00e4ntymiseen.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<h2><span data-contrast=\"auto\">Lambda-anturi nykyaikaisissa ajoneuvoissa<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/h2>\n<p><span data-contrast=\"auto\">Nyky\u00e4\u00e4n on t\u00e4rke\u00e4\u00e4 saavuttaa mahdollisimman alhainen polttoaineenkulutus mahdollisimman suurella moottorin suorituskyvyll\u00e4. T\u00e4m\u00e4 tavoite voidaan tietenkin saavuttaa vain, jos polttoaine k\u00e4ytet\u00e4\u00e4n mahdollisimman tehokkaasti. T\u00e4m\u00e4 puolestaan edellytt\u00e4\u00e4 polttoaineen optimaalista palamista. Sen saavuttamiseksi moottorin pakokaasut on analysoitava yksityiskohtaisesti. Siin\u00e4 verrataan pakokaasun happipitoisuutta ymp\u00e4r\u00f6iv\u00e4n ilman happipitoisuuteen. Kunkin happipitoisuuden tai vertailun mittaustuloksen mukaan lambda-anturi tuottaa s\u00e4hk\u00f6j\u00e4nnitteen, joka antaa t\u00e4rkeit\u00e4 mittaustietoja moottorin ohjausyksik\u00f6lle. Polttoaineen ja ilman sekoitussuhteesta riippuen s\u00e4hk\u00f6j\u00e4nnite joko nousee tai laskee. <\/span><\/p>\n<p><span data-contrast=\"auto\">Lambda-anturin j\u00e4nnitearvosta riippuen moottorin ohjausyksikk\u00f6 muuttaa polttoaineen ja ilman v\u00e4list\u00e4 suhdetta joko pident\u00e4m\u00e4ll\u00e4 tai lyhent\u00e4m\u00e4ll\u00e4 ruiskutusventtiilien ruiskutusaikoja ja s\u00e4\u00e4t\u00e4m\u00e4ll\u00e4 siten polttoaineen m\u00e4\u00e4r\u00e4\u00e4. T\u00e4m\u00e4 on niin sanottu valvontasilmukka. Moottorin ohjausyksikk\u00f6 k\u00e4ytt\u00e4\u00e4 j\u00e4nnitearvoa, jota usein kutsutaan my\u00f6s lambda-anturin j\u00e4nnitteeksi, tunnistamaan hetkellisen seoksen koostumusta ja s\u00e4\u00e4t\u00e4\u00e4 sit\u00e4 jatkuvasti. Jos seos on esimerkiksi liian runsas eli sis\u00e4lt\u00e4\u00e4 liikaa polttoainetta, polttoaineen m\u00e4\u00e4r\u00e4\u00e4 v\u00e4hennet\u00e4\u00e4n hieman. Jos taas seos on liian laiha, polttoaineen m\u00e4\u00e4r\u00e4\u00e4 lis\u00e4t\u00e4\u00e4n. Polttoainem\u00e4\u00e4r\u00e4\u00e4 jatkuvasti s\u00e4\u00e4t\u00e4m\u00e4ll\u00e4 seoksen koostumus voidaan aina mukauttaa optimaalisesti.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<div class=\"product-slider\" style=\"--swiper-theme-color: #d80812;--swiper-navigation-size: 22px;--swiper-navigation-sides-offset: -25px;\"><div class=\"slider-title\"><svg id=\"fi_9219671\" enable-background=\"new 0 0 64 64\" height=\"512\" viewBox=\"0 0 64 64\" width=\"512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><g><g><path d=\"m25.308 61.679c-3.514 0-6.373-2.859-6.373-6.373s2.859-6.372 6.373-6.372 6.373 2.858 6.373 6.372-2.859 6.373-6.373 6.373zm0-8.745c-1.308 0-2.373 1.064-2.373 2.372 0 1.309 1.064 2.373 2.373 2.373s2.373-1.064 2.373-2.373c0-1.308-1.064-2.372-2.373-2.372z\"><\/path><path d=\"m47.462 61.679c-3.514 0-6.372-2.859-6.372-6.373s2.858-6.372 6.372-6.372 6.373 2.858 6.373 6.372-2.86 6.373-6.373 6.373zm0-8.745c-1.308 0-2.372 1.064-2.372 2.372 0 1.309 1.064 2.373 2.372 2.373 1.309 0 2.373-1.064 2.373-2.373 0-1.308-1.065-2.372-2.373-2.372z\"><\/path><\/g><path d=\"m52.128 43.994h-31.419c-3.057 0-5.668-2.081-6.35-5.061l-6.521-28.477c-.086-.376-.346-.698-.696-.86l-5.409-2.507c-1.252-.58-1.797-2.066-1.217-3.319.58-1.252 2.067-1.797 3.319-1.217l5.409 2.507c1.743.807 3.04 2.407 3.468 4.28l6.521 28.479c.158.692.765 1.176 1.476 1.176h31.419c.708 0 1.314-.481 1.476-1.171l5.07-21.813c.145-.62-.119-1.071-.288-1.284-.17-.214-.55-.572-1.186-.572h-37c-1.381 0-2.5-1.119-2.5-2.5s1.119-2.5 2.5-2.5h37c1.999 0 3.857.897 5.101 2.462s1.696 3.579 1.244 5.526l-5.071 21.814c-.691 2.965-3.3 5.037-6.346 5.037z\"><\/path><\/g><\/svg><h2>Osta lambda-anturit autoosi<\/h2><\/div><div class=\"swiper\"><div class=\"swiper-wrapper\"><div class=\"swiper-slide product\"><img decoding=\"async\" src=\"https:\/\/ic-files-res.cloudinary.com\/image\/upload\/t_pad_white1200x1200v1\/v1\/item\/gy3jhbzceh7blhitwz1t.jpg\" 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43.994h-31.419c-3.057 0-5.668-2.081-6.35-5.061l-6.521-28.477c-.086-.376-.346-.698-.696-.86l-5.409-2.507c-1.252-.58-1.797-2.066-1.217-3.319.58-1.252 2.067-1.797 3.319-1.217l5.409 2.507c1.743.807 3.04 2.407 3.468 4.28l6.521 28.479c.158.692.765 1.176 1.476 1.176h31.419c.708 0 1.314-.481 1.476-1.171l5.07-21.813c.145-.62-.119-1.071-.288-1.284-.17-.214-.55-.572-1.186-.572h-37c-1.381 0-2.5-1.119-2.5-2.5s1.119-2.5 2.5-2.5h37c1.999 0 3.857.897 5.101 2.462s1.696 3.579 1.244 5.526l-5.071 21.814c-.691 2.965-3.3 5.037-6.346 5.037z\"><\/path><\/g><\/svg><path stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"m8.25 4.5 7.5 7.5-7.5 7.5\" \/><\/svg><\/button><\/div><p class=\"price-info\"><\/p><\/div><div class=\"swiper-slide product\"><img decoding=\"async\" src=\"https:\/\/ic-files-res.cloudinary.com\/image\/upload\/t_pad_white1200x1200v1\/v1\/item\/jx4ltp7inrxwpxxy6yjq.jpg\" alt=\"25171\" \/><a class=\"line-clamp-title\" 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43.994h-31.419c-3.057 0-5.668-2.081-6.35-5.061l-6.521-28.477c-.086-.376-.346-.698-.696-.86l-5.409-2.507c-1.252-.58-1.797-2.066-1.217-3.319.58-1.252 2.067-1.797 3.319-1.217l5.409 2.507c1.743.807 3.04 2.407 3.468 4.28l6.521 28.479c.158.692.765 1.176 1.476 1.176h31.419c.708 0 1.314-.481 1.476-1.171l5.07-21.813c.145-.62-.119-1.071-.288-1.284-.17-.214-.55-.572-1.186-.572h-37c-1.381 0-2.5-1.119-2.5-2.5s1.119-2.5 2.5-2.5h37c1.999 0 3.857.897 5.101 2.462s1.696 3.579 1.244 5.526l-5.071 21.814c-.691 2.965-3.3 5.037-6.346 5.037z\"><\/path><\/g><\/svg><path stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"m8.25 4.5 7.5 7.5-7.5 7.5\" \/><\/svg><\/button><\/div><p class=\"price-info\"><\/p><\/div><div class=\"swiper-slide product\"><img decoding=\"async\" src=\"https:\/\/ic-files-res.cloudinary.com\/image\/upload\/t_pad_white1200x1200v1\/v1\/item\/z1ppibe6mq6vywxowhmj.jpg\" alt=\"25090\" \/><a class=\"line-clamp-title\" href=\"https:\/\/www.motointegrator.fi\/tuotteet\/11083-lambda-anturi-bosch-0-258-007-353\" target=\"_blank\">Lambda-anturi BOSCH 0 258 007 353<\/a><p>Bosch<\/p><div class=\"price-container\"><p class=\"price\">75.65 EUR<\/p><button class=\"price-button\"><svg id=\"fi_9219671\" enable-background=\"new 0 0 64 64\" height=\"512\" viewBox=\"0 0 64 64\" width=\"512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><g><g><path d=\"m25.308 61.679c-3.514 0-6.373-2.859-6.373-6.373s2.859-6.372 6.373-6.372 6.373 2.858 6.373 6.372-2.859 6.373-6.373 6.373zm0-8.745c-1.308 0-2.373 1.064-2.373 2.372 0 1.309 1.064 2.373 2.373 2.373s2.373-1.064 2.373-2.373c0-1.308-1.064-2.372-2.373-2.372z\"><\/path><path d=\"m47.462 61.679c-3.514 0-6.372-2.859-6.372-6.373s2.858-6.372 6.372-6.372 6.373 2.858 6.373 6.372-2.86 6.373-6.373 6.373zm0-8.745c-1.308 0-2.372 1.064-2.372 2.372 0 1.309 1.064 2.373 2.372 2.373 1.309 0 2.373-1.064 2.373-2.373 0-1.308-1.065-2.372-2.373-2.372z\"><\/path><\/g><path d=\"m52.128 43.994h-31.419c-3.057 0-5.668-2.081-6.35-5.061l-6.521-28.477c-.086-.376-.346-.698-.696-.86l-5.409-2.507c-1.252-.58-1.797-2.066-1.217-3.319.58-1.252 2.067-1.797 3.319-1.217l5.409 2.507c1.743.807 3.04 2.407 3.468 4.28l6.521 28.479c.158.692.765 1.176 1.476 1.176h31.419c.708 0 1.314-.481 1.476-1.171l5.07-21.813c.145-.62-.119-1.071-.288-1.284-.17-.214-.55-.572-1.186-.572h-37c-1.381 0-2.5-1.119-2.5-2.5s1.119-2.5 2.5-2.5h37c1.999 0 3.857.897 5.101 2.462s1.696 3.579 1.244 5.526l-5.071 21.814c-.691 2.965-3.3 5.037-6.346 5.037z\"><\/path><\/g><\/svg><path stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"m8.25 4.5 7.5 7.5-7.5 7.5\" \/><\/svg><\/button><\/div><p class=\"price-info\"><\/p><\/div><\/div><div class=\"swiper-pagination\"><\/div><div class=\"swiper-button-prev\"><\/div><div class=\"swiper-button-next\"><\/div><\/div><\/div>\n<h2><span data-contrast=\"auto\">Miten katalysaattori toimii?<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/h2>\n<p><span data-contrast=\"auto\">Ajoneuvon katalysaattorin kannalta optimaalinen seoksen koostumus on eritt\u00e4in t\u00e4rke\u00e4. Polttoaineen ja ilmam\u00e4\u00e4r\u00e4n oikea suhde on t\u00e4rke\u00e4 edellytys sille, ett\u00e4 katalysaattori voi v\u00e4hent\u00e4\u00e4 pakokaasuja optimaalisesti. Katalysaattori voi puhdistaa pakokaasut tehokkaasti vain, jos ruiskutusj\u00e4rjestelm\u00e4 toimii oikein, mink\u00e4 kannalta my\u00f6s lambda-anturin toiminta on eritt\u00e4in t\u00e4rke\u00e4\u00e4. Esimerkiksi liian rikas seos heikent\u00e4\u00e4 katalysaattorin suorituskyky\u00e4 ja voi jopa vahingoittaa sit\u00e4 pitk\u00e4ll\u00e4 aikav\u00e4lill\u00e4. Lis\u00e4ksi liian runsas seos johtaa luonnollisesti polttoaineen kulutuksen kasvuun.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<h2><span data-contrast=\"auto\">Viallisen lambda-anturin oireet ja vaikutukset<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/h2>\n<p><span data-contrast=\"auto\">Viallinen lambda-anturi voi n\u00e4ky\u00e4 usealla eri tavalla. Yksi mahdollinen seuraus on jo mainittu: polttoaineen kulutuksen kasvu. T\u00e4m\u00e4 tapahtuu, kun lambda-anturi antaa liian v\u00e4h\u00e4n tai ei lainkaan j\u00e4nnitett\u00e4. Polttoaineenkulutuksen lis\u00e4\u00e4ntymisen lis\u00e4ksi t\u00e4m\u00e4 voi johtaa my\u00f6s huonoon palamiseen ja siten moottorin suorituskyvyn heikkenemiseen. T\u00e4ss\u00e4 yhteydess\u00e4 on kuitenkin erotettava toisistaan katalysaattorin edess\u00e4 ja takana sijaitseva lambda-anturi.<\/span><\/p>\n<figure id=\"attachment_13905\" aria-describedby=\"caption-attachment-13905\" style=\"width: 696px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"wp-image-13905 size-large\" src=\"https:\/\/www.motointegrator.fi\/blog\/wp-content\/uploads\/sites\/14\/2016\/08\/Lambda-anturi-1024x683.jpg\" alt=\"Lambda-anturi\" width=\"696\" height=\"464\" srcset=\"https:\/\/www.motointegrator.fi\/blog\/wp-content\/uploads\/sites\/14\/2016\/08\/Lambda-anturi-1024x683.jpg 1024w, https:\/\/www.motointegrator.fi\/blog\/wp-content\/uploads\/sites\/14\/2016\/08\/Lambda-anturi-300x200.jpg 300w, https:\/\/www.motointegrator.fi\/blog\/wp-content\/uploads\/sites\/14\/2016\/08\/Lambda-anturi-768x512.jpg 768w, https:\/\/www.motointegrator.fi\/blog\/wp-content\/uploads\/sites\/14\/2016\/08\/Lambda-anturi-1536x1024.jpg 1536w, https:\/\/www.motointegrator.fi\/blog\/wp-content\/uploads\/sites\/14\/2016\/08\/Lambda-anturi-696x464.jpg 696w, https:\/\/www.motointegrator.fi\/blog\/wp-content\/uploads\/sites\/14\/2016\/08\/Lambda-anturi-1068x712.jpg 1068w, https:\/\/www.motointegrator.fi\/blog\/wp-content\/uploads\/sites\/14\/2016\/08\/Lambda-anturi-630x420.jpg 630w, https:\/\/www.motointegrator.fi\/blog\/wp-content\/uploads\/sites\/14\/2016\/08\/Lambda-anturi.jpg 2048w\" sizes=\"(max-width: 696px) 100vw, 696px\" \/><figcaption id=\"caption-attachment-13905\" class=\"wp-caption-text\">\u00a9 Shutterstock \/ loflo69<\/figcaption><\/figure>\n<p><span data-contrast=\"auto\">Katalysaattorin edess\u00e4 olevan viallisen lambda-anturin toimintah\u00e4iri\u00f6n seuraukset ovat vakavammat kuin muun tyyppisen anturin. Jos katalysaattorin takana oleva lambda-anturi vikaantuu, lambda-ohjaus jatkaa kuitenkin toimintaansa. T\u00e4m\u00e4n vuoksi seosta s\u00e4\u00e4det\u00e4\u00e4n. Ainoastaan katalysaattorin j\u00e4lkeisi\u00e4 pakokaasuarvoja ei en\u00e4\u00e4 valvota, joten moottorin elektroniikka ei voi en\u00e4\u00e4 m\u00e4\u00e4ritt\u00e4\u00e4 sen toimintaa. Onko lambda-anturi katalysaattorin edess\u00e4 tai takana viallinen. Yleens\u00e4 ajamista voidaan jatkaa ilman suurempia ongelmia. Vahinkoja ei kuitenkaan pid\u00e4 j\u00e4tt\u00e4\u00e4 huomiotta. Itse anturin ei muuten tarvitse v\u00e4ltt\u00e4m\u00e4tt\u00e4 olla viallinen. Tietyiss\u00e4 olosuhteissa vain kaapeli voi olla l\u00f6ystynyt tai hapettunut. Vialliset pistokeliit\u00e4nn\u00e4t voivat my\u00f6s antaa virheellisen vaikutelman, ett\u00e4 anturissa itse on vikaa.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Nykyaikaiset moottorit toimivat eritt\u00e4in taloudellisesti ja tasapainoisen polttoaine-ilmasuhteen avulla, mink\u00e4 vuoksi lambda-anturi on v\u00e4ltt\u00e4m\u00e4t\u00f6n. Vian sattuessa t\u00e4m\u00e4 voi johtaa muun muassa moottorin suorituskyvyn heikkenemiseen tai polttoaineen kulutuksen lis\u00e4\u00e4ntymiseen.\u00a0 Lambda-anturi nykyaikaisissa ajoneuvoissa\u00a0 Nyky\u00e4\u00e4n on t\u00e4rke\u00e4\u00e4 saavuttaa mahdollisimman alhainen polttoaineenkulutus mahdollisimman suurella moottorin suorituskyvyll\u00e4. T\u00e4m\u00e4 tavoite voidaan tietenkin saavuttaa vain, jos polttoaine k\u00e4ytet\u00e4\u00e4n mahdollisimman tehokkaasti. T\u00e4m\u00e4 puolestaan [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":13905,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,401],"tags":[3106,2961,3109,3107,3108,3105,3104],"class_list":["post-1357","post","type-post","status-publish","format-standard","has-post-thumbnail","category-auto","category-lambda-anturi","tag-katalysaattori","tag-lambda-anturi","tag-lambda-anturin-toiminta","tag-lambda-anturin-vika","tag-missa-lambda-anturi-sijaitsee","tag-viallisen-lambda-anturin-oireet","tag-viallisen-lambda-anturin-vaikutukset"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Lambda-anturin toiminta ja viallisten osien vaikutukset<\/title>\n<meta name=\"description\" content=\"Nykyaikaiset moottorit toimivat taloudellisesti ja tasapainoisen polttoaine-ilmasuhteen avulla, mink\u00e4 vuoksi 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