3839987826e

SAE TECHNICAL
PAPER SERIES

2006-01-2574

P

Proposta de sistema alternativo de partida a frio de veículos bicombustíveis
Danilo Buchdid
General Motorsdo Brasil/ Escola Politécnica da USP
Anderson Les
General Motorsdo Brasil/ Escola Politécnica da USP
Paulo Carlos Kaminski
Escola Politécnica da USP

FILIADA À

XV Congresso e Exposição Internacionais da Tecnologia da Mobilidade
São Paulo, Brasil
21 a 23 de novembro de 2006

AV. PAULISTA, 2073 - HORSA II - CJ. 1003 - CEP 01311-940 - SÃO PAULO – SP

2006-01-2574

Proposal of an alternative system of a cold start for bi-fuel vehicle
Proposta de sistema alternativo de partida a frio de veículos bicombustíveis
Danilo Buchdid
EPUSP – Escola Politécnica da USP
General Motors do Brasil

Anderson Les
EPUSP – Escola Politécnica da USP
General Motors do Brasil

Paulo Carlos Kaminski
EPUSP – Escola Politécnica da USP
Copyright © 2006 Society of Automotive Engineers, In

um resistor elétrico para tal. A temperatura ambiente mínima considerada nesse estudo foi de 0ºC. Para verificar a viabilidade do sistema, foram realizados ensaios em câmara fria.

ABSTRACT
The proposal of this paperwork shown the develop of a cold start system for bi-fuels engines, eliminating the auxiliary gasoline reservoir. The system is based on heating the admission air in the intake manifold, when applied fuel with mixture of 80% of ethanol and upper with ambient temperature below of 20°C, that becoming unnecessary the gasoline injection. The simple design becomes the vehicle project cheaper and flexible. There were analyzed the parameters that have influence on the cold start, it was developed calculation to found the temperature that the intake air must be heat and related electrical heater dimensioning. The minimum ambient temperature consider on this study was 0° C. To verify the system feasibility, it was performed trails on cold chamber.

INTRODUÇÃO
A busca por melhoria dos produtos e