Abstract
Keywords - series HEV, parallel HEV, emissions, energy consumption, CNG (compressed natural gas)
Abstract
To reduce energy consumption and make effective use of petroleum resources, Mitsubishi Fuso Truck & Bus Corporation has been conducting R&D on a revolutionary high-efficiency hybrid truck, under commission from the Ministry of Economy, Trade and Industry as part of the Advanced Clean Energy Vehicle Project (ACE Project) of the New Energy and Industrial Technology Integrated Development Organization (NEDO). The objective of this development is to achieve high energy efficiency with far lower CO2 discharge surpassing diesel engine trucks that are the core means of transport in the physical distribution industry. We therefore adopted a combination of a compressed natural gas engine with the newly developed series/parallel HEV control system presented at EVS-16 held in 1999. This paper introduces our studies on the control of hybrid vehicles by the drive control system developed in the ACE project, with the objectives of achieving optimum vehicle efficiency and high serviceability of the HEV.