Volvo's Engine Architecture: How a Modular Design Strategy Transformed the Brand's Entire Powertrain Lineup
In short: Starting in 2013, Volvo replaced its diverse range of five- and six-cylinder engines with a unified family of straight-three and straight-four units. Known as the Volvo Engine Architecture, this modular strategy aimed to improve efficiency and environmental performance across every model, eventually incorporating advanced hybrid technology and sophisticated emissions control systems.
The development of the Volvo Engine Architecture (VEA) began in 2006, with a strategic decision finalized in 2007 to focus exclusively on four-cylinder engines. Volvo invested approximately 2 billion SEK into the tooling and development of these engines at its Skövde plant. By the autumn of 2013, the first vehicles equipped with the new architecture, the S60 II and V60, reached customers. This marked the beginning of a systematic phase-out of older five-cylinder, six-cylinder, and third-party four-cylinder engines, a process that was nearly complete by 2016.
The architecture was designed for flexibility, allowing for both petrol and diesel variants. To meet increasingly stringent emissions regulations, Volvo introduced the VEA GEN2 update in the second half of 2017. This upgrade included the addition of SCR-catalysts for diesel engines and particle filters for petrol engines, enabling compliance with Euro 6c and Euro 6d-TEMP standards. By the 2019 model year, all engines had been updated to meet these requirements, with all diesel units now utilizing Ad-Blue technology.
Innovation continued with the introduction of hybrid technology. In December 2014, the XC90 T8 launched as the first hybrid variant, featuring an electric rear axle drive and a crankshaft integrated starter generator. Further advancements included the PowerPulse anti-lag system, unveiled in 2016 with the S90, which uses compressed air to reduce turbo lag. More recently, the VEA GEN3 update has focused on widespread hybridization, including mild hybrid (MHEV) systems that utilize a 48V network and a belt-driven integrated starter generator to capture kinetic energy, marking a significant shift in Volvo's approach to powertrain performance and efficiency.
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- Summary by Intellect · source: Volvo Engine Architecture
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