Computers and Control Systems: Description and Operation
DESCRIPTION1. Overview
a. The new CAMRY meets the Partial Zero Emission Vehicle (PZEV) requirements.
b. The PZEV requirements are as follows:
1. Exhaust emission meets the Super Ultra-Low Emission Vehicle (SULEV) requirements. (See table attached)
2. Evaporative emission meets the PZEV requirements. (See table attached)
2. Structure
a. The exhaust emission system has been changed to meet the SULEV requirements.
*1: The intake manifold runner valve generates "tumble" air flow in the cylinder, and the "tumble" air flow improves engine combustion.
*2: The sensor element is a new, narrow, planar-type, replacing the previous cup-type design. The new design accelerates the activation of the A/F sensor.
b. The construction of the evaporative emission control system has been changed.