Module 8: Design of Hybrid and Electric Vehicles

Lecture 29 : Drive cycle and its detailed analysis

From the Table 4 the following conclusions can be drawn:

Federal Test Procedure FTP-75

The FTP-75 (Federal Test Procedure) has been used for emission certification of light duty vehicles in the U.S. The FTP-75 cycle is derived from the FTP-72 cycle by adding a third phase of 505s, identical to the first phase of FTP-72 but with a hot start. The third phase starts after the engine is stopped for 10 minutes. Thus, the entire FTP-75 cycle consists of the following segments cold start phase, transient phase, hot start phase. The following are basic parameters of the cycle i.e. distance travelled is 11.04 miles (17.77 km), duration: 1874s, average speed is 21.2 mph (34.1 km/h). The FTP-75 cycle is known in Australia as the ADR 37 (Australian Design Rules) cycle. Federal Test Procedure FTP-75 drive cycle is as shown in Figure 8 .

The driving cycle parameters for Federal Test Procedure FTP-75 are as shown in Table 5.

 Table 5: Parameters of FTP-75

From the Table 5 the following conclusions can be drawn: