Air quality: remaining compliant

Air quality regulations are becoming increasingly strict. All over the world, Caterpillar® engine technology enables you to remain compliant, now and in the future.

Cat® engines comply with the regulations governing construction equipment outlined by the United States Environmental Protection Agency (EPA), the California Air Resources Board (CARB) and the European Union. Research and development activity focuses on complying with even stricter upcoming regulations. Two pollution control technologies are vital.

Electronic control reduces harmful emissions by maximising combustion under different load conditions and temperatures. Sensors monitor engine conditions and transmit information to an Electronic Control Module (ECM). This ECM then precisely adjusts fuel injection and combustion to reduce harmful emissions.

Cooling intake reduces the temperature of pressurised hot air from turbochargers before it enters the combustion chamber. Colder intake air reduces NOx emissions.
Selected Cat engines now use these technologies. Both of these technologies will develop following the stricter regulations that will be introduced in stages over the next several years.