Cummins Brazil has introduced the QSF 4.5 electronic diesel engine for soil and asphalt compaction applications, produced at its Guarulhos (SP) plant since April 2024 and developed by local engineering teams.
The 4.5-liter engine delivers 97 kW (130 hp @ 2200 rpm) and will power Dynapac’s CA25, CA30, and CA35 compactors starting in 2026, in addition to the CP28 pneumatic roller already using the same platform.
Designed for Tier 3 emissions compliance, the QSF 4.5 combines high power density, fuel efficiency, and extended maintenance intervals, enhancing uptime and reducing operating costs for construction contractors. The collaboration between Cummins and Dynapac strengthens both companies’ positions in the road-building equipment segment and underscores Cummins Brazil’s role as a regional engineering and manufacturing hub for off-highway engines.
Source: Cummins Press Release Read The Article
PSR Analysis. The QSF 4.5 reflects Cummins Brazil’s shift toward locally engineered solutions tailored to regional operating and service conditions, which enhances competitiveness, supply-chain resilience, and responsiveness to local OEMs like Dynapac.
However, this approach also diverges from Cummins’ global standardization strategy, introducing greater product variability and complexity across its portfolio. While it reinforces the Brazilian industrial ecosystem and reduces dependency on imports, it challenges the company to balance local customization with global efficiency and common-platform synergies. PSR
Fabio Ferraresi is Director, Business Development, South America, for Power Systems Research
