MODERNIZACIJA MOTORA V – 46TK UGRADNJOM SUVREMENOG SUSTAVA UBRIZGAVANJA

undergraduate thesis

• Author: Pere Križan
• Mentor: Rudolf Tomić (mentor)
• Granter: University of Zagreb; (Croatian Defence Academy "Dr. Franjo Tuđman"); Zagreb
• Defense date and country: 2021-09-21, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering

Abstract

Tenk M84A je najvažnije oklopno sredstvo u OSRH. Ovaj tenk koristi 12-cilindarski Diesel
motor V-46-TK koji razvija snagu od 735 kW. Jedan od načina povećanja pokretljivosti je
povećanje snage motora. Danas je uobičajeno da tenkovski motori imaju snago od 1100 kW.
Pri toj snazi motora, tenk M84A bi imao specifičnu snagu od 26,2 kW/t što je bolje od
najsuvremenijeg tenka današnjice, ruske Armate (22,8 kW/t). Povećanje snage motora se
najčešće ostvaruje povećanjem gustoće energije koja ulazi u moto, konkretnije povećanjem
mase zraka (sustav prednabijanja većeg kapaciteta) i povećanja mase goriva. Kako bi se
osiguralo i učinkovito izgaranje što ujedno znači i manja potrošnja goriva te veća autonomija
vozila, potrebno je imati sustav ubrizgavanja koji može ostvariti velike tlakove
ubrizgavanja, samim time i dobro miješanje goriva sa zrakom. Suvremeni sustavi koji
omogućuju precizno upravljanje količinom brizganog goriva i tlakom ubrizgavanja su
Common Rail sustavi. Motor V-46-TK ima izravni sustav ubrizgavanja koji je moguće
zamijeniti modernijim Common Rail sustavom što bi podiglo snagu motora na 1100 kW,
smanjilo buku te zagađenje okoliša. Najvažnije komponente sustava ubrizgavanja su:
visokotlačna pumpa, brizgaljke, cjevovodi itd. Kako bi modernizacija bila uspješna nužno je
navedene dijelove adekvatno zamijeniti. Jednostavnim analitičkim proračunom se može doći
do potrebnih vrijednosti masenog i volumnog protoka te snage po cilindru koji pokazuju da su
visokotlačna pumpa LP11.2 i brizgaljka LI1 proizvođača Liebherr najprikladniji za ugradnju
u motor V-46-TK tenka M84A.

Abstract (english)

Tank M84A is one of the most used armored vehicles in the Croatian army. It uses a 12-
cylinder Diesel engine V46-TK which develops a power of 735 kW. One of the ways of
increasing mobility of M84A tank is increasing its engine power. Today, it is common for
tank engines to have a power of 1100 kW. At that engine power, the M84A tank would have a
specific power of 26,2 kW/t which is better than the most modern present tank, the Russian
Armata (22.8 kW/t). The increase in engine power is often achieved by increasing the density
of energy entering the engine, more specifically by increasing the mass of air charging system
with higher capacity) and increasing the mass of fuel. In order to ensure efficient combustion,
which also means lower fuel consumption and greater vehicle autonomy, it is necessary to
have an injection system that can achieve high injection pressures, and thus good mixing of
fuel and air. Modern systems that enable precise control of the amount of fuel injected and
injection pressure are Common Rail systems. The V46-TK engine has a direct injection
system which could be replaced by modern Common Rail system that would reise engine
power to 1100 kW and would reduce noise and enviromental pollution. The most important
components of fuel supply system are: high-pressurepump, injectors, pipelines, etc. To make
the modernization successful, it is necessary to adequately replace these parts. A math
calculation would result in certain values of mass and volume flow and power per cylinder.
The calculation shows that the LP11.2 high – pressure pump and LI1 injectors from Liebherr
are the most suitable ones for instalationin V-46TK engineof M84A tank.

• Keywords: tenk; motor; Common Rail; visokotlačna pumpa; brizgaljka; sustav ubrizgavnja
• Keywords (english): tank; engine; Common Rail; high – pressure pump; injector; injection system
• Language: croatian
• URN:NBN: urn:nbn:hr:249:979233
• Study programme: Title: Military Engineering; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica inženjer/inženjerka vojnog inženjerstva (sveučilišni/a prvostupnik/ prvostupnica inženjer/inženjerka vojnog inženjerstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2022-01-14 11:21:53