Final answer:
The exact number of diesel engine/transmission combinations used by a department depends on their fleet specifics. Transmission technologies like 7+ speeds, DCTs, and CVTs enhance fuel economy and lower emissions in diesel engines. Diesel filters, electric vehicles, and fuel cells also contribute to reducing emissions and improving overall vehicle efficiency.
Step-by-step explanation:
To find out how many diesel engine/transmission combinations are used by the department, one would need specifics about the department's fleet configuration. However, advances in transmission technologies, such as 7+ speeds, dual clutch transmissions (DCTs), and continuously variable transmissions (CVTs), contribute to improved fuel economy and reduced CO₂ emissions for diesel engines. These technologies, once integrated with diesel engines, offer varied combinations for achieving different performance and efficiency outcomes.
Diesel filters are significant too, as they reduce particulate matter from both on road and off road diesel engines. In addition to enhanced transmission systems and particle filtering, the future of transportation is also pointing towards alternative vehicle technologies like plug-in electric vehicles and fuel cells, which produce zero tailpipe emissions—also contributing to emission reduction strategies alongside better transportation planning for passengers and freight. As an example of diesel engine configurations, some diesel trucks use two 12-V batteries in parallel; though they produce a total emf of 12 V, they can deliver the larger current needed to start a diesel engine. This is just one aspect of the complex engineering behind diesel engine technology that could influence the number of diesel engine/transmission combinations.