To encourage the use of natural gas in urban transport and cargo in Brazil, the CNG Committee of Brazilian Institute of Oil, Gas and Biofuels (IBP) held the 3rd Workshop on Natural Gas for Heavy Vehicles, in Rio de Janeiro on November 23. Included in discussion was the development of the dual-fuel CNG-diesel bus with flex technology and a heavy duty engine proposal from MAN Latin America.
The event had as lecturers Jorge Loureiro, the Department of Economic Development, Energy, Industry and Services of the State of Rio de Janeiro (Sedeis); Gian Marques, MAN Latin America; Rafael Gustavo Andrade, Gas Natural Fenosa; Daniel Sofer, DSA; Antonio Bermudo, the Convergas, and Márcio de Almeida D’Agosto, the Transportation Engineering Program Coppe-UFRJ. In the audience were representatives from companies in the energy sector, such as BG Group, Petrobras, Vale, Bahiagás, White Martins, Ipiranga, EPE (Energy Research Company) and OAO Gazprom Brazil.
Jorge Loureiro, superintendent Sedeis, began the event by tracing the history of CNG use in heavy vehicles in the state of Rio de Janeiro, including the latest design, the CNG-diesel bus developed by MAN Latin America / Volkswagen along with Robert Bosch Latin America. The bus has two injection systems: the original diesel one and a Natural Gas injection systems that injects gas into the intake manifold.
The bus is capable of running with 85% gas and 15% diesel, emitting 80% less particulate matter and 20% less CO2 than a diesel equivalent bus. The project is part of the Rio Sustainable Transportation Program, which seeks to ensure a more efficient and sustainable transport for the 2014 FIFA World Cup and 2016 Olympic Games.
Loureiro revealed that a proposal is under review so that, in addition to 75% discount on property taxes, the business sector will pay for the same price for natural gas as that charged by utilities to gas stations in the state of Rio de Janeiro. Moreover, it is planned to implement a supply system in garages and bus terminals. These measures seek to encourage the use of gas in urban transportation and freight until the completion of two international events.
Gian Marques, supervisor of advanced alternative fuel propulsion Systems of MAN Latin America, in his lecture introduced the MAN low-floor bus family with CNG engines and addressed the use of CNG in fleets of buses in Brazil and in the world. The company plans to offer the above-mentioned CNG-diesel bus — VW 17,280 OT-flex diesel-gas — as a serial product. So far the company has built four prototypes for initial testing. It forecast at an earlier event that the buses will commence mass-production in September 2013.
During the workshop, MAN Latin America also proposed the MAN D 0836 Dual-Fuel CNG engine for powering heavy transport in Brazil, with 202 kW maximum power, maximum torque of 1050 Nm and specific fuel consumption (minimum) of 198 g / kWh.
The workshop was closed by Marcio D’Agosto, the Transportation Engineering Program Coppe-UFRJ, who briefly spoke about the economic and environmental advantages of urban buses using the flex CNG-diesel system, as tested in Rio de Janeiro.
(This article compiled using information from an IBP press release)