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The noise requirements for automotive components have been updated in the recent years due to the consumer demand for low noise inside the cars. Indeed, it was performed an experimental study aiming the reduction of acoustic noise emitted by Fuel Supply Module (FSM), which is installed inside the fuel tank, using a rubber structure under it. The FSM is responsible to deliver sufficient quantities of fuel to the engine and maintain the pressure required for efficient fuel injection in all operating states. The study presents a basic theory regarding the motor noise source identification based on frequency domain analysis as well as noise control by vibration isolation.

In the Brazilian automotive market, the Flex Fuel vehicles are known for their ability to run with gasoline, ethanol, or any proportional mixture of them. To allow this flexibility, the vehicle’s fuel system has been adapted to support differences in fuel types available in the Brazilian market, including contaminated fuel that in this paper will be treated as aggressive ethanol. The fuel pump, which has the function of supply fuel to the engine, had to be specially developed for the flex fuel application to support the specific characteristics in Brazilian ethanol. The focus of this paper is to evaluate the influence of different fuels - gasoline, ethanol, and aggressive ethanol in the sparking level of the DC fuel pump commutation system. Using a digital oscilloscope, the voltage signals of the fuel pump were recorded, and it was applied a mathematical formulation to determine the sparking level of the DC motor for the different fuels.

When new vehicles are being developed and will later be made available to the market, one of the most important characteristics that may influence the buying decision is the comfort available to the driver and passenger inside the vehicle. This comfort is partially limited by NVH issues inside the car for example. With the new technologies development, vehicles have become noiseless and, that’s why some vibrations from fuel supply module that weren't identifiable then now might show themselves a huge impact of noise inside the vehicles. So it is important to analyze the NVH behavior of fuel supply modules. To perform this study in a short time and with low cost, CAE simulations were done focusing on geometry optimization of the pump holder that keeps the electric fuel pump inside the fuel tank.

Research shows that Brazil is among countries of Latin America, Africa and Asia which are considered as bad fuel market [1]. Fuel with poor quality reduces considerably the lifetime of fuel filter installed in vehicles. For this reason, the correct dimensioning of this component is extremely important. In order to improve this development, it is necessary to enlarge the knowledge of the fuel filter. This paper correlates the fuel filter bench test with field results improving the feasibility to use the laboratory data to estimate the fuel filter area and consequently the product lifetime.