•  A high-capacity EGR valve have been adopted for improved reliability of the EGR valve, reduced fuel consumption, cleaner exhaust emissions and improved output.

•  An EGR valve with a stepping motor has been adopted for optimum control according to engine operation conditions.

•  For control of EGR system, refer to CONTROL SYSTEM, EGR CONTROL. (See EGR CONTROL OUTLINE [ZY, Z6].) (See EGR CONTROL BLOCK DIAGRAM [ZY, Z6].) (See EGR CONTROL OPERATION [ZY, Z6].)