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Book synopsis

Variable Compression Engines: Enabling Net Zero explores variable compression ratio (VCR): one of the most promising-and historically elusive-advancements in internal combustion engine (ICE) technology. Long recognized for its thermodynamic benefits, VCR has challenged engineers for decades due to its mechanical complexity. Today, as the global mobility landscape demands ever higher efficiency, lower emissions, and greater fuel flexibility, VCR has emerged as a viable and transformative solution.

This book delivers a comprehensive and authoritative examination of VCR technology, quantifying its efficiency and CO2-reduction potential while surveying the wide range of mechanisms conceived, developed, and tested over more than a century of engine innovation. By combining historical insight with modern analysis, the authors reveal the remarkable ingenuity of past and present engine designers-and demonstrate that VCR is not only feasible, but increasingly essential.

Positioned squarely within the context of global decarbonization, the book argues for a realistic, inclusive pathway to net-zero emissions-one in which ICEs continue to play a critical role. VCR technology enables higher efficiency across almost all operating conditions, supports advanced combustion strategies, and allows engines to operate effectively on a broad spectrum of low- and zero-carbon fuels, from biofuels to synthetic e-fuels.

With VCR now in high-volume production and poised for broader adoption across automotive, heavy-duty, and marine applications, this timely volume is an essential resource for OEMs, suppliers, policymakers, researchers, and students seeking practical, scalable solutions for a sustainable energy future.

Book details

• Full title: Variable Compression Systems for Future Engines and Fuels
• Author: Jean Pierre Pirault, Philip Dingle, Martin Flint
• Language: English
• Binding: Hardback
• Number of pages: 602
• EAN: 9781468605846
• ISBN: 1468605844
• ID: 53008253
• Publisher: SAE International
• Weight: 1430 g
• Dimensions: 254 × 203 × 33 mm
• Date of publishing: 30. April 2026

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