Pregled bibliografske jedinice broj: 59397
CONTROL STRATEGY FOR CONTINUOSLY VARIABLE PIPES LENGTH OF THE INTAKE MANIFOLD
CONTROL STRATEGY FOR CONTINUOSLY VARIABLE PIPES LENGTH OF THE INTAKE MANIFOLD // Proceedings of the SEOUL 2000 FISITA World Automotive Congress / Chung, Suk Ho (ur.).
Seoul: Korea Society of Automotive Engineers, Inc., 2000. (predavanje, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)
CROSBI ID: 59397 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
CONTROL STRATEGY FOR CONTINUOSLY VARIABLE PIPES LENGTH OF THE INTAKE MANIFOLD
Autori
Medica, Vladimir ; Čarija, Zoran ; Franković Bernard
Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni
Izvornik
Proceedings of the SEOUL 2000 FISITA World Automotive Congress
/ Chung, Suk Ho - Seoul : Korea Society of Automotive Engineers, Inc., 2000
Skup
SEOUL 2000 FISITA World Automotive Congress
Mjesto i datum
Seoul, Republika Koreja, 12.06.2000. - 15.06.2000
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
spark ignition engine; variable length intake system; numerical model
Sažetak
The paper presents 1D mathematical model and simulation program, which were used to determine the control strategy to change the intake pipes length continuously. The model comprises the unsteady 1D model of the entire intake and exhaust systems, with the submodel for engine cylinders. Governing equations for 1D flow were solved using the numerical method of characteristics. The model was validated by comparing the calculated results with test bed results for original engine characteristics. The paper presents sample results for an contemporary 1.8 litre, 100 kW, automotive spark ignition engine. The engine is naturally aspirated and comprises 4 cylinders in line. The analysis was performed for the original engine layout with two-step change of intake pipes length and for the continuously variable length of intake pipes. The results indicate the superiority of the continuously variable length of intake pipes when achieving the highest engine torque and power in the full range of engine operation speeds. The results show the possibilities for significant engine torque increase in the lower speed range. The analysis comprises not only the pipe length determination, than also the intake pipe diameter optimization. The results of calculations determine the control strategy to hold the optimum length of intake pipes to achieve the highest engine torque and power for the given engine speed.
Izvorni jezik
Engleski
Znanstvena područja
Strojarstvo
