Design of an Engine Test Bench Based on Virtual Instrument Technology

Jiang, Fachao; Liu, Entuo; Wang, Molin; Lin, Li

doi:10.1109/icicta.2011.164

Cited by 1 publication

(1 citation statement)

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“…For studying the phenomena related to ICE operation, dedicated rigs are often designed and set up, with a focus on the degree of understanding intended for the actual application [7]. Characterizing engine performance can be performed in motored and firing conditions [8,9] that is usually achieved by coupling the power unit to an electric machine (EM). The detailed understanding of underlying phenomena such as intake pressure profile, ignition strategy, and injection timing can ensure additional margins to improve the accuracy of numerical models within which the sensitivity of the single control components can be studied in a cost-effective way through simulations [10].…”

Section: Introductionmentioning

confidence: 99%

System Design and Stress–Strain Analysis for Cranking and Motoring Small-Size Engines

Cecere,

Irimescu,

Merola

2024

Designs

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The characterization of small-size engines requires dedicated rigs that are usually used for loading the power unit. Adding the possibility of motoring the engine is an important advantage that allows more detailed information on operating characteristics. It can be used for obtaining precious data that contribute to the development of more accurate numerical models and subsequent validation. Cost competitiveness is another essential aspect of small-size engines, given that development efforts need to be contained as much as possible. Within this context, the present work developed and tested a setup capable of cranking and motoring a small-size 50 cc spark ignition engine. Two configurations were considered for coupling an electric motor to the power unit: the first through a pulley-belt transmission and the second via a plastic clutch assembly. The main idea was to ensure the capability of motoring the engine up to a rotational velocity of 6000 rpm. Engine load was applied through a 1 kW electric generator connected directly to the crankshaft. The overall setup was designed in the two configurations and a stress–strain analysis was performed. The belt-driven option was found to be more favorable in terms of mechanical component requirements, showing a safety factor of around 4.0, while the plastic clutch assembly involved a more complex design phase and turned out to be more demanding, with a safety factor of around 2.9.

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