MCE5 Timeline


Start of Dongfeng VCRi engine industrial implementation phase


Dongfeng VCRi first engine run


MOU with IFPEN for the joint-development of powertrain technologies I IGNITE Programme launch, aiming at SSP development


MCE5-Dongfeng VCRi strategic agreement I Launch of Generation #6 VCRi Miller engine family development, targeting mass production


Concept studies and qualification of a VCR Miller engine


Dongfeng VCRi demonstration programme I SSP concept qualification


Partnership with MECACHROME for the preliminary production engineering of VCRi engine


DRIVE & SPARK programme launch, aiming at generation #5 VCRi engine TRL6 development


Roll-out 2nd VCRi demonstration vehicle


Roll-out of 1st VCRi demonstration vehicle I NEXTEP program launch, aiming at generation #4 VCRi direct Injection engine development


MCE5 shows off its first VCRi demonstration vehicle at the Geneva Motor Show


FLOWER programme launch, aiming at generation #3 VCRi engine and vehicle prototype


1st VCRi multicylinder engine


Start of preliminary production engineering research


IMPACT programme launch, aiming at generation #2 VCRi engine development


Partnership with DANIELSON ENGINEERING for development of the VCRi multicylinder engine


Partnership with CERTAM for the development of VCRi single cylinder engine


Partnership with Groupe PSA for the initial development of VCRi


On the initiative of Vianney Rabhi, MCE-5 DEVELOPMENT is founded by a team of engineers led by David Rabhi I Feasibility studies and preliminary tests of VCRi technology

Vianney RABHI

Vianney Rabhi is the inventor of MCE5’s VCRi technology. He filed his first internal combustion engine-related patent in 1985. He soon understood the value of variable compression ratios (VCR) and anticipated many applications for them, especially their use in optimizing the implementation of extended expansion combustion cycles.

In 1991, Vianney Rabhi filed his first variable compression ratio engine patent and established an inventory of the essential functional features that a VCR engine must exhibit. In 1997, the idea of a rack-and-pinion transmission came to him, which met most of the functional criteria of his inventory. A few months later, he filed the first related patent, the one on which the VCRi technology is based.

Between 1997 and 2000, he filed several patent improvements and obtained funding for a first design optimization of the VCRi mechanism. In 2000, MCE-5 DEVELOPMENT was founded on his initiative. A first car manufacturer took interest in the project, leading to a collaboration that continued until 2004.

Vianney Rabhi directed the main strategic and technical orientations of the Company until 2012, taking charge of the commercial promotion of VCRi to the world’s leading car manufacturers and presenting the project to French and European public institutions funding research. From 2013 onwards, the company’s structuring and management efforts since 2009 enabled Vianney Rabhi to reduce his operational activities with MCE5 and devote himself more intensively to his core activity of independent inventor.