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Performance Controlling of Spark Ignition Engine by the Variations of the Intake Valve Opening Angle
Technical Paper
2003-01-3720
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The performance controlling developed by a spark ignition engine, with indirect fuel injection, is made through the throttle valve, which regulates the air flow used by the electronic injection system to dose the fuel amount to be delivered, maintaining the suitable air/fuel rate. The FIAT 1580 cc 16V engine was modified to function with only one cylinder. The tests for performance evaluation were conduced in engine tests cell at diverse loads configuration. Seeking the fuel consumption reduction, it was designed a mechanical device that allows, with a working engine, the angular position variation of one of the intake camshaft cam, maintaining the cam of the other valve in its normal synchronism. This process is characterized by the late intake valve closing. It is presented the results of the engine performance trials, operating with and without the throttle valve control system, for many engine load configuration. The results achieved in the break tests shows a considerable reduction in the fuel consumption in partial loads of 75, 50 and 25%.
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Citation
Schirm, E., De Jesus, G., and Valle, R., "Performance Controlling of Spark Ignition Engine by the Variations of the Intake Valve Opening Angle," SAE Technical Paper 2003-01-3720, 2003, https://doi.org/10.4271/2003-01-3720.Also In
References
- JOST, Kevin Spark-ignition engine trends Automotive Engineering International Warrendale 110 1 26 39 Jan. 2002
- KREUTER, Peter HEUSER, Peter SCHEBITZ, Michael Strategies to improve SI-engine performance by means of variable intake lift, timing and duration Detroit SAE 1992 SAE Technical Paper Series 920449
- ANDERSON, Mark D. TSAO, Tsu-Chin LEVIN, Michael B. Adaptive lift control for a camless electrohydraulic valvetrain Detroit SAE 1998 SAE Technical Paper Series 981029
- PISCHINGER, Martin et al. Benefits of the electromechanical valve train in vehicle operation SAE Variable valve actuation 2000 Detroit 2000 43 54
- TITOLO, A. The variable valve timing system - application on a V8 engine Detroit SAE 1991 SAE Technical Paper Series 910009
- HATANO, Kiyoschi et al. Development of new mult-mode variable valve timing engine Detroit SAE 1993 SAE Technical Paper Series 930878
- DEMMELBAUER-EBNER, Wolfgang DACHS, Alois LENZ, Hans P. Variable valve actuation systems for the optimization of engine torque Detroit SAE 1991 SAE Technical Paper Series 910447
- MOKLEGAARD, L. STEFANOPOULOU, A. G. SCHMIDT, J. Transition from combustion to variable compression braking SAE Variable valve actuation 2000 Detroit 2000 93 103
- PHOENIX, Lance PHOENIX, John B. A camshaft mechanism for synchronous phasing Valve Timing Detroit SAE 1991 SAE Technical Paper Series 910448
- BUCHHOLZ, Kami Next-generation northstar Automotive Engineering International Warrendale 110 11 93 96 Nov. 2002
- STUMPF, Urbano E. Inovações tecnológicas em motores a combustão São Paulo 1983
- PIERIK; Ronald J. BURKHARD, James F. Design and development of a mechanical variable valve actuation system SAE Variable valve actuation 2000 Detroit 2000 19 26
- TAYLOR, Charles F. Análise dos motores de combustão interna São Paulo EDUSP Universidade de São Paulo 1976 2 531
- CUNHA, Sérgio B da HEDRICK, J. K. PISANO Albert P. Variable valve timing by means of a hydraulic actuation SAE Variable valve actuation 2000 Detroit 2000 1 17
- FLIERL, R. KLÜTING, M. The third generations of valvetrains - new fully variable valve trains for throttle-free load control SAE Variable valve actuation 2000 Detroit 2000 81 91
- PODNAR, Daniel J. KUBESCH John T. Characteristics of a small engine equipped with an electromagnetic valve actuation system Detroit SAE 1998 SAE Technical Paper Series 981908
- HAUGEN, D. J. et al. Modifications of a quad 4 engine to permit late intake valve closure Detroit SAE 1992 SAE Technical Paper Series 921663
- BUTZMANN, S. MELBERT, J. KOCH, A. Sensorless control of electromagnetic actuators for variable valve train SAE. Variable valve actuation 2000 Detroit 2000 65 70