The large amount of available design information from different areas has become common in most organizations. Under these conditions, there are difficulties in sharing and reusing knowledge, especially by the fact that this knowledge is available within the company in different formats and locations. Due to this, design engineers often fail to use such information. To ensure a better use, it is important to organize and integrate the available knowledge in a collaborative manner. In this context, the Knowledge-based Engineering (KBE) approach can be associated. Through KBE concepts, the current study aims to develop a set of tools for assisting decision making, by storing and providing useful information in a timely manner. Such solution should meet the needs of its users (i.e. designers), as well as improve the quality of design activities along the Product Development Process (PDP). For this study, still under development, the following steps have been adopted: (a) delimitation of action scope (i.e. steps of PDP to be focused); (b) knowledge capture; (c) knowledge structuring through ontologies; (d) standardization; (e) development of rules; (f) creation of application solutions; and (g) performance evaluation of solutions. The application of the present proposal is expected to facilitate the access to information, significantly reduce the number of Engineering Change Requests (ECR's), as well as allow acquired knowledge to be used in subsequent projects (e.g. lessons learned).