Kinematics of a variable stroke and compression ratio mechanism of an internal combustion engine

Author(s)

Rufino, Caio H. ^[1] ; Ferreira, Janito V. ^[1]

Affiliation

^[1] Univ Estadual Campinas, Lab Biofuel Engines, Dept Computat Mech, Sch Mech Engn, BR-13083970 Campinas, SP - Brazil

• Document type: Journal article
• Source: Journal of the Brazilian Society of Mechanical Sciences and Engineering; v. 40, n. 9 SEP 2018.
• Web of Science Citations: 1

Abstract

The development of automotive propulsion has been guided in recent years by policies for the reduction of pollutant emissions. To comply with the imposed regulations, engine adaptability is one of the most effective strategies for meeting efficiency requirements in the case of the diverse operational conditions found in urban traffic. A variable stroke and compression ratio engine is the solution to this requirement. In addition to its advantages, its design inevitably increases the engine's complexity. Thus, it is necessary to conduct studies on the feasibility of such a technology. This work describes a variable stroke and compression ratio engine mechanism and presents a developed kinematic model that is used to evaluate the requirements for the implementation of this mechanism. The results of the evaluation confirm the possibility of using this alternative mechanism to obtain a higher efficiency in internal combustion engines. (AU)

• FAPESP's process: 16/06043-1 - Conceptual study of an internal combustion engine with adjustable cubic capacity and compression ratio
• Grantee: Caio Henrique Rufino
• Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
• FAPESP's process: 13/50238-3 - Conceptual study of an advanced ethanol-fueled engine
• Grantee: Francisco Emílio Baccaro Nigro
• Support Opportunities: Program for Research on Bioenergy (BIOEN) - Research Centers in Engineering Program