{"id":3958,"date":"2016-12-17T01:24:56","date_gmt":"2016-12-16T22:24:56","guid":{"rendered":"http:\/\/www.mequipment.ro\/?p=3958"},"modified":"2020-08-02T13:32:32","modified_gmt":"2020-08-02T11:32:32","slug":"9-in-clasa-medie-de-excavatoare-tier-4fstage-iv","status":"publish","type":"post","link":"https:\/\/mequipment.ro\/en\/9-in-clasa-medie-de-excavatoare-tier-4fstage-iv\/","title":{"rendered":"9 \u00een clasa medie de excavatoare Tier 4F\/Stage IV"},"content":{"rendered":"

Din 2015 \u00eencoace, tot mai mul\u0163i constructori de utilaje au introdus pe pia\u0163\u0103 modele de excavatoare noi \u015fi \u00eembun\u0103t\u0103\u0163ite, conforme cerin\u0163elor standardelor de emisii exigente. Astfel s-a trecut la o nou\u0103 genera\u0163ie de utilaje ce ofer\u0103 puteri mai mari, dar totodat\u0103 consum\u0103 \u015fi polueaz\u0103 mai pu\u0163in. <\/em> | Marius IANCU<\/strong><\/p>\n

Puterea \u015fi u\u015furin\u0163a efectu\u0103rii \u00eentre\u0163inerii nu mai sunt criterii suficiente c\u00e2nd vine vorba de utilajele actuale; acestea trebuie dublate de calit\u0103\u0163i care s\u0103 le creasc\u0103 productivitatea \u015fi eficien\u021ba, dar s\u0103 le \u00eencadreze \u00een normele impuse privind emisiile. To\u0163i produc\u0103torii de motoare s-au upgradat, au adus noi genera\u0163ii, care, \u00eempreun\u0103 cu numeroase sisteme integrate, fac un pas mai departe \u00een labirintul normelor de poluare. Iar excavatoarele, probabil cele mai populare utilaje terasiere, se conformeaz\u0103. Dar s\u0103 arunc\u0103m o privire pe masa de joc \u015fi s\u0103 urm\u0103rim c\u0103r\u0163ile principalilor juc\u0103tori.<\/p>\n

1.<\/strong> \u00cenc\u0103 de la lansarea gamei de excavatoare din seria 300, \u00een anii ’90, aceasta a devenit un standard \u00een domeniu, \u00een extrac\u0163ii miniere \u015fi aplica\u0163ii din construc\u0163ii \u00een condi\u0163ii dificile. Iar noua serie F duce mai departe standardul impus. Astfel, \u00een categoria excavatoarelor de talie medie, nout\u0103\u0163ile CATERPILLAR<\/strong> apar\u0163in seriei F, produc\u0103torul american oferind pe modelele \u00eentre 25 \u015fi 40 t \u2013 323F L, 326F\/326F LN, 330F L, 335F L \u2013 motoare Cat C7.1 ACERT conforme cu ultimele standarde Tier 4F\/Stage IV. Aceste motoare ofer\u0103 un cuplu ridicat \u015fi un consum mai mic de combustibil, electronic\u0103 integrat\u0103, sisteme de post-tratare, emisii reduse \u0219i intervale extinse de service. \"\"
\nCele trei moduri de putere \u2013 high, standard \u0219i eco \u2013 ajut\u0103 la gestionarea consumului de combustibil, iar tehnologiile inteligente \u00eenglobate precum Cat Grade Control & Slope ajut\u0103 operatorii s\u0103 lucreze mai productiv, cu acurate\u021be. De asemenea, Product Link\/VisionLink conecteaz\u0103 proprietarii la echipamentul lor, oferind acces la datele ma\u015finii: localizare, ore de func\u0163ionare, consum de combustibil, timpul de inactivitate, evenimente \u0219i coduri de diagnosticare. Excavatoarele sunt disponibile \u00een mai multe configura\u0163ii de lucru, \u00een func\u0163ie de aplica\u0163ii. <\/p>\n

2.<\/strong> \u00cen categoria 25-40 t, CASE CE<\/strong> are 4 excavatoare noi pe \u015fenile seria D (CX250D, CX300D, CX350D \u015fi CX370D), toate echipate cu motoare Tier 4F\/Stage IV \u015fi cu sistem Case Intelligent Hydraulic. Pompele hidraulice controlate electronic \u015fi supapa principal\u0103 mai mare cresc productivitatea, \u00eembun\u0103t\u0103\u0163ind r\u0103spunsul ma\u015finii \u015fi timpii de ciclu cu p\u00e2n\u0103 la 12%. Noile excavatoare pretind c\u0103 sunt cu 8% mai eficiente ca \u015fi consum dec\u00e2t genera\u0163ia anterioar\u0103, gra\u0163ie noilor motoare \u015fi hidraulicii \u00eembun\u0103t\u0103\u0163ite. Modelele seriei D se conformeaz\u0103 standardului de emisii actual utiliz\u00e2nd o tehnologie SCR ce nu necesit\u0103 prezen\u0163a unui filtru de particule diesel (DPF), deci nu include regenerare sau costuri asociate.<\/p>\n

3.<\/strong> \u00cen gama medie de greut\u0103\u0163i opera\u0163ionale 25-40 t, HITACHI<\/strong> propune noua serie -6 de excavatoare hidraulice pe \u015fenile Zaxis cu modelele: ZX250LC-6\/ZX250LCN-6, ZX300LC-6\/ZX300LCN-6, ZX350LC-6\/ZX350LCN-6.
\nZX250LC-6 este dotat cu sistemul TRIAS II, ce reduce cantitatea de ulei hidraulic \u00eentoars\u0103 \u00een rezervor, datorit\u0103 conlucr\u0103rii pompei \u0219i supapei. Aceasta se traduce \u00eentr-o economie de combustibil de 19%, \u00een modul ECO (10% \u00een modul de PWR), la acela\u0219i nivel de productivitate. Un alt exemplu al tehnologiei avansate este folosirea unui dispozitiv de post-tratare care are ca rezultat mai pu\u021bine emisii, asigur\u00e2nd conformitatea cu norma EU Stage IV.
\nCu un motor Isuzu de 186 kW Stage IV, \u00een \u0219ase cilindri, ZX300LC-6 are cea mai mare putere din clasa sa. Acesta ofer\u0103 o productivitate cu 14% mai mare \u00een modul PWR (15% \u00een modul ECO) dec\u00e2t modelul precedent \u015fi asigur\u0103 costuri de combustibil mai mici, datorit\u0103 noului sistem TRIAS II.<\/p>\n

\"\" 4.<\/strong> Tot de la un constructor japonez, de data aceasta KOBELCO<\/strong>, avem Genera\u0163ia 10 de excavatoare conven\u0163ionale (cum le denumesc ei), intervalul 25-40 t fiind deschis de modelul SK260LC-10\/SK260NLC-10. Acesta este urmat de \u00eenc\u0103 dou\u0103, \u015fi anume SK300LC-10\/SK300NLC-10 \u015fi SK350LC-10\/SK350NLC-10. Utilajele ofer\u0103 performan\u021be mai bune de consum de combustibil dec\u00e2t p\u00e2n\u0103 acum gra\u0163ie folosirii tehnologiei regenerative. Comparativ cu un modelul echivalent din Genera\u021bia 9, consumul de combustibil \u00een modul de lucru S (normal) a sc\u0103zut cu 9%, \u00een timp ce modul Eco atinge o reducere de 10%. Oficialii Kobelco spun c\u0103 acest lucru \u00eembun\u0103t\u0103\u0163e\u015fte mai departe productivitatea cu 5% \u00een operarea \u00een modul de lucru H.
\nExcavatoarele au motoare diesel Hino supraalimentate \u015fi cu r\u0103cire intermediar\u0103, conforme cu normele Tier 4F\/Stage IV \u0219i dispun de ultimele nout\u0103\u021bi \u00een materie de \u201etehnologii curate\u201d prin \u00eencorporarea unui catalizator de oxidare diesel (DOC) \u0219i combina\u021bia de SCR \u0219i DPF.<\/p>\n

5.<\/strong> Trioul japonez \u00een intervalul 25-40 t \u00eel \u00eencheiem cu renumitul KOMATSU<\/strong> \u015fi cu a sa nou\u0103 serie -11, \u015fi anume: PC240LC-11\/NLC-11, PC290LC-11\/NLC-11 \u015fi PC360LC-11\/NLC-11. Motorul Komatsu Stage IV integreaz\u0103 o tehnologie SCR, cu DPF, pentru a reduce \u0219i mai mult oxizii de azot (NOx), utiliz\u00e2nd aditiv AdBlue. Cu un sistem de control electronic avansat care gestioneaz\u0103 fluxul de aer, injec\u021bia de combustibil, parametrii de combustie \u0219i func\u021biile de post-tratare, motorul Komatsu Stage IV optimizeaz\u0103 performan\u021bele, reduce emisiile \u0219i are capabilit\u0103\u0163i avansate de diagnosticare. Komatsu continu\u0103 s\u0103 foloseasc\u0103 o turbin\u0103 cu geometrie variabil\u0103 (VGT) \u0219i supap\u0103 EGR, asigur\u00e2nd astfel o temperatur\u0103 precis\u0103 \u0219i un control al fluxului de aer, pentru o durat\u0103 de via\u021b\u0103 mai lung\u0103 a componentelor sale. \"\"
\nO dezvoltare notabil\u0103 o reprezint\u0103 noul excavator hibrid<\/strong> Komatsu HB365LC-3 Hybrid de 36 t (prezentat \u00een prim\u0103var\u0103 la Bauma Munchen), o re\u00eennoire a angajamentului produc\u0103torului nipon de a reduce impactul utilajelor terasiere asupra mediului. Acesta se afl\u0103 la a treia genera\u0163ie. Sistemul hibrid func\u0163ioneaz\u0103 utiliz\u00e2nd principiul regener\u0103rii \u0219i al stoc\u0103rii energiei. Astfel, \u00eentregul sistem include un motor electric Komatsu, un generator de putere, un ultra-capacitor \u0219i un motor diesel SAA6D114E-6 de 202 kW. Energia cinetic\u0103 generat\u0103 \u00een timpul fr\u00e2n\u0103rii este transformat\u0103 \u00een electricitate, care este transmis\u0103 apoi c\u0103tre invertor \u0219i captat\u0103 de ultra-capacitorul Komatsu. C\u00e2nd utilajul accelereaz\u0103 \u00een condi\u0163ii de sarcin\u0103, energia captat\u0103 este eliberat\u0103 imediat pentru a fi utilizat\u0103 de c\u0103tre structura superioar\u0103 a ma\u015finii sau pentru a asista motorul. <\/p>\n

6.<\/strong> R\u0103m\u00e2nem tot \u00een zona Asiei, unde de la produc\u0103torul sud-coreean DOOSAN<\/strong> avem o serie de cinci modele de excavatoare conforme cu standardul Tier 4F\/Stage IV, \u00een categoria 24-40 t (DX235LCR-5, DX255LC-5, DX300LC-5, DX340LC-5 \u015fi DX380LC-5). Similare \u00een dimensiuni cu genera\u0163ia anterioar\u0103, noile utilaje propun capacit\u0103\u0163i de ridicare mai bune. Primele dou\u0103 modele sunt dotate cu un motor Doosan DL06P \u00een \u015fase cilindri, supraalimentat, cu 5% mai puternic dec\u00e2t precedentul. Urm\u0103toarele trei au motoare Scania DC09 cu 5 cilindri \u015fi puteri \u00eentre 202 \u015fi 237 kW. Excavatoarele au \u00een echiparea standard sistemul sofisticat wireless de monitorizare a flotei CoreTMS, ce ofer\u0103 date despre performan\u0163ele utilajului pe dou\u0103 c\u0103i (prin satelit \u015fi GSM). <\/p>\n

7.<\/strong> De la HYUNDAI<\/strong> Heavy Industries Europe (HHIE), \u00een intervalul 25-40 t avem modelele gamei HX, patru la num\u0103r: HX260 L, HX300 L, HX330 L \u015fi HX380 L. Toate sunt conforme cu normele Tier 4F\/Stage IV \u015fi sunt mai rezistente dec\u00e2t p\u00e2n\u0103 acum. Produc\u0103torul folose\u015fte pe aceste utilaje motoare Cummins QSB6.7 \u015fi QSL9 ce includ o combina\u0163ie de tehnologii SCR \u015fi EGR pentru a se \u00eencadra \u00een standardul de emisii, fiind totodat\u0103 mai eficiente \u00een ce prive\u015fte consumul de combustibil, comparativ cu modelele din seria 9A-. \"\"
\nExcavatoarele beneficiaz\u0103 de un nou design al cabinei, cu un parbriz mai mare \u015fi un spa\u0163iu interior mai generos cu 13%. Noile caracteristici de siguran\u0163\u0103 de pe aceste utilaje includ sistemul AAVM (Advanced Around View Monitoring), pentru o vedere de jur \u00eemprejur la 360 grade, cu afi\u015fare pe un display de 8 inch \u00een cabin\u0103, \u015fi sistemul IMOD (Intelligent Moving Object Detection), ce detecteaz\u0103 \u015fi avertizeaz\u0103 operatorul atunci c\u00e2nd exist\u0103 obiecte \u00een aria de lucru a ma\u015finii. Seria HX de excavatoare dispune de o func\u0163ie ce opre\u015fte motorul atunci c\u00e2nd este inactiv. Operatoruul poate selecta modul de func\u0163ionare \u015fi timpul de inactivitate \u00een func\u0163ie de aplica\u0163ie. Sistemul IPC (Intelligent Power Control) controleaz\u0103 puterea tot \u00een func\u0163ie de condi\u0163iile de lucru. Debitul pompei poate fi controlat, iar modul poate fi selectat de pe monitor.<\/p>\n

8.<\/strong> Dintre produc\u0103torii europeni, LIEBHERR<\/strong> propune \u00een categoria 25-40 t cu motoare Stage IV excavatoarele: R926 Litronic, R936 Litronic \u015fi R946 Litronic. De altfel, cel din urm\u0103 este \u015fi cel dint\u00e2i model conform cu standardul de emisii Stage IV\/Tier 4F. Acesta este propulsat de un motor diesel de produc\u0163ie proprie (Liebherr D936 A7), \u00een \u015fase cilindri, cu o putere de 220 kW, cu tehnologie SCR \u015fi injec\u0163ie de solu\u0163ie pe baz\u0103 de uree, ce nu necesit\u0103 filtru de particule. Utilajul are o structur\u0103 foarte robust\u0103, f\u0103c\u00e2nd fa\u0163\u0103 \u00een cele mai dificile aplica\u0163ii, iar designul trenului de rulare cre\u015fte performan\u0163ele ma\u015finii. Celelalte dou\u0103 modele (R926 \u015fi R936) au tot motoare Liebherr, dar \u00een patru cilindri, sunt conforme Tier 4F\/Stage IV \u015fi \u2013 conform produc\u0103torului \u2013 consum\u0103 mai pu\u0163in combustibil (at\u00e2t \u00een ceea ce prive\u015fte orele de func\u0163ionare, c\u00e2t \u015fi cantitatea de material mutat\u0103). Ca o particularitate a acestor ma\u015fini, componentele individuale (motorul diesel, transmisia, unitatea de rotire, pompele \u0219i cilindrii hidraulici) sunt proiectate \u0219i fabricate de c\u0103tre Liebherr.<\/p>\n

9.<\/strong> Nu \u00een ultimul r\u00e2nd, VOLVO<\/strong> aduce \u00een clasa medie (25-40 t) trei modele cu motoare Tier 4F\/Stage IV: EC250E, EC300E \u015fi EC380E. Cu o tehnologie avansat\u0103, utilajele ofer\u0103 o cre\u015ftere semnificativ\u0103 a eficien\u0163ei consumului de combustibil. Tura\u021bia motorului este redus\u0103 la ralanti atunci c\u00e2nd comenzile sunt inactive pe o perioad\u0103 prestabilit\u0103 de timp (\u00eentre 3 \u015fi 20 secunde), ceea ce reduce consumul de carburant \u015fi nivelul de zgomot. Debitul ridicat al pompei combinat cu sistemul de comand\u0103 electrohidraulic creeaz\u0103 timpi de r\u0103spuns \u015fi cicluri mai rapide. Combina\u0163ia dintre motorul Volvo D8 (D13 la modelul EC380E) \u015fi sistemul hidraulic inteligent face diferen\u0163a. Cre\u015fterea puterii odat\u0103 cu reducerea consumului de combustibil \u015fi a emisiilor are ca rezultat un ciclu mai scurt \u015fi o productivitate crescut\u0103. Modulul de control al emisiilor motorului (ACM) controleaz\u0103, monitorizeaz\u0103 \u015fi diagnosticheaz\u0103 automat sistemul de tratare a emisiilor, pentru a asigura conformitatea cu reglement\u0103rile de emisii.
\nMotorul diesel Volvo de ultim\u0103 genera\u0163ie \u00eendepline\u0219te integral cerin\u0163ele celor mai recente reglement\u0103ri privind emisiile. Fiind dotat cu tehnologia Volvo Advanced Combustion Technology (V-ACT), acesta ofer\u0103 performan\u0163e superioare \u015fi un consum sc\u0103zut de combustibil. Utilizeaz\u0103 injectoare precise, de \u00eenalt\u0103 presiune, turbocompresor \u015fi radiator intermediar pentru aer \u015fi control electronic pentru a optimiza performan\u0163a utilajului.
\nNoul sistem electro-hidraulic \u015fi noua supap\u0103 principal\u0103 de comand\u0103 (MCV) utilizeaz\u0103 o tehnologie inteligent\u0103 pentru a controla debitul la cerere pentru cre\u015fterea productivit\u0103\u0163ii, o capacitate ridicat\u0103 de s\u0103pare<\/a> \u015fi un consum excelent de combustibil.
\n\"\"<\/p>\n","protected":false},"excerpt":{"rendered":"

Din 2015 \u00eencoace, tot mai mul\u0163i constructori de utilaje au introdus pe pia\u0163\u0103 modele de excavatoare noi \u015fi \u00eembun\u0103t\u0103\u0163ite, conforme cerin\u0163elor standardelor de emisii exigente. Astfel s-a trecut la o<\/p>\n","protected":false},"author":1,"featured_media":3963,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_crdt_document":"","footnotes":""},"categories":[32,42,38],"tags":[19,443,194,3174,77,116],"class_list":["post-3958","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-utilaje-de-constructii","category-utilaje-terasiere","category-stiri-utilaje-de-constructii-miniere-si-forestiere","tag-case","tag-caterpillar","tag-doosan","tag-excavatoare-hidraulice-pe-senile","tag-hyundai","tag-liebherr"],"translation":{"provider":"WPGlobus","version":"3.0.2","language":"en","enabled_languages":["ro","en"],"languages":{"ro":{"title":true,"content":true,"excerpt":false},"en":{"title":false,"content":false,"excerpt":false}}},"yoast_head":"\n9 \u00een clasa medie de excavatoare Tier 4F\/Stage IV - M. 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