Razvoj hidravlične zavore za motor z notranjim zgorevanjem

magistrsko delo magistrskega študijskega programa II. stopnje Strojništvo

Matic Kolenc (Author), Franc Majdič (Mentor), Tomaž Katrašnik (Co-mentor)

Abstract

Zaganjalnik je naprava za zaganjanje motorjev z notranjim zgorevanjem. Pri nekaterih testih zaganjalnikov se pogosto pojavijo zahteve po dodatnem obremenjevanju motorja med zagonom. Za ta namen je potrebno zagotoviti dodaten zavorni moment na gredi motorja. Ta moment lahko zagotovimo z zavoro, ki lahko deluje na različne principe. V sklopu obravnavanega dela smo predstavili tri koncepte zaviranja, jih ovrednotili in po metodi VDI 2225 ocenili in izbrali najbolj ustreznega. Najustreznejši koncept za zaviranje uporablja moment, ki je potreben za pogon črpalke, ki potiska olje skozi proporcionalni varnostni ventil. Ta omogoča nastavljanje zavornega momenta. V začetku smo preučili razmere med zagonom in zahteve glede dodatnega obremenjevanja. Izbrani koncept smo nato detajlno preučili, izbrali komponente in ga skonstruirali. Izdelali smo hidravlično shemo in 3D model celotne zavore. Za zagotavljanje pravilnega delovanja smo izvedli meritve tlaka v tlačnem vodu v odvisnosti od zasuka glavne gredi črpalke, v prvih stopinjah vrtenja. S tem smo pokazali, da je za pravilno delovanje zavore potrebno uporabiti hidravlični akumulator, ki zagotavlja zavorni moment že prvi trenutek vrtenja. Na koncu smo izdelali še simulacijo delovanja zavore med zaviranjem in podali predloge za nadaljnje delo.

Keywords

magistrske naloge;zavora;zaganjalnik;hidravlika;batna črpalka;meritve tlaka;proporcionalni varnostni ventil;

Data

Language:	Slovenian
Year of publishing:	2024
Typology:	2.09 - Master's Thesis
Organization:	UL FS - Faculty of Mechanical Engineering
Publisher:	[M. Kolenc]
UDC:	621.43:62-592.2:629.3.054.23(043.2)
COBISS:	219603971
Views:	161
Downloads:	47
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Development of a hydraulic brake for an internal combustion engine
Secondary abstract:	A starter motor is a device for starting internal combustion engines. In some tests, there are often requirements for extra load on the motor during start-up. For this purpose, it is necessary to provide an additional braking torque on the motor shaft. This torque can be provided by a brake that can work on different principles. As part of the work we presented three braking concepts, evaluated them according to the VDI 2225 method and selected the most appropriate one. The most appropriate braking concept uses the torque required to drive a pump that pushes oil under pressure through a proportional safety valve. This allows setting the braking torque. At the beginning, we studied the conditions during start-up and the requirements for additional loading. We then studied the selected concept in detail, selected the components and constructed it. We created a hydraulic scheme and a 3D model of the entire brake. To ensure correct operation, we performed pressure measurements in the pressure line depending on the rotation of the main shaft of the pump. We have shown that for the correct operation of the brake, it is necessary to use a hydraulic accumulator, which provides the braking torque from the very first moment of rotation. At the end, we created a simulation of the braking and gave suggestions for further work.
Secondary keywords:	master thesis;brake;starter motor;hydraulics;piston pump;pressure measurements;proportional pressure relief valve;
Type (COBISS):	Master's thesis/paper
Study programme:	0
Embargo end date (OpenAIRE):	1970-01-01
Thesis comment:	Univ. Ljubljana, Fak. za strojništvo
Pages:	XXIV, 79 str.
ID:	25031364