As shown in figure 8.1, cardiorespiratory endurance requires fitness of your heart, lungs, blood, blood vessels, and muscles. In this lesson, youâll learn how proper physical activity improves your cardiorespiratory endurance. Youâll also learn how to assess your cardiorespiratory endurance.
Exhaust gas recirculation (EGR) is a system that takes exhaust gas from a dieselâs exhaust manifold and reintroduces it into the intake of the engine to reduce the combustion chamber temperature.
EGR system simplified diagram. How the EGR system flow is monitored: The operation of the EGR system and the EGR flow is controlled by the engine computer or ECM. A computer system in all modern cars has a self-diagnostic and reporting capability or what is known as the on-board diagnostic or OBD II.