97Test procedure

97 Test procedure

97 Test procedure

For the purposes of section 96(3), the procedure for testing is as follows.

Step 1 Secure the vehicle on the dynamometer.

Step 2 Set the dynamometer to simulate the correct load and inertia for the vehicle.

Step 3 Start sampling.

Step 4 Idle for 60 seconds.

Step 5 Accelerate rapidly to 80 km/h under simulated inertia, using wide open throttle, making gear changes as required for smooth acceleration.

Step 6 Decelerate by removing all pressure from the accelerator pedal, disengaging the gears and gently applying brakes to bring the vehicle to a standstill.

Step 7 Idle for 10 seconds.

Step 8 Accelerate rapidly to 80 km/h under simulated inertia, using wide open throttle, making gear changes as required for smooth acceleration.

Step 9 Decelerate by removing all pressure from the accelerator pedal, disengaging the gears and gently applying brakes to bring the vehicle to a standstill.

Step 10 Idle for 10 seconds.

Step 11 Accelerate rapidly to 80 km/h under simulated inertia, using wide open throttle, making gear changes as required for smooth acceleration.

Step 12 Maintain speed at 80 km/h for 60 seconds, then stop sampling and bring the vehicle to rest.

Note—

Explanation of the test procedure

This test has been designed to evaluate vehicle emissions during typical ‘real-world’ operating modes and conditions. There are 3 simple modes—

• 3 idle periods

• acceleration to 80 km/h 3 times

• maintain speed at 80 km/h.

The graph below indicates the modes of operation. The actual test will result in a graph that has more variation than the indicative graph below, because of the need to change gears when accelerating. Modes B – D and E – G and H – I have no specific time interval. All the specified time periods have an error margin of ± 1 second.