Close-coupled catalytic converter system
Closed loop bias air/fuel ratio offset to enhance catalytic conv
Closed loop control for desulfating a NO.sub.x trap
Closely coupled exhaust catalyst system and engine strategy asso
Combatting air pollution
Combatting air pollution
Combination catalyst/adsorber system for treating an engine exha
Combined engine air/fuel control and catalyst monitoring
Combustion detection
Combustion exhaust purification system and method
Compact cogeneration system
Continuous rotary regeneration system for a particulate trap
Control apparatus and method for internal combustion engine
Control for improved vehicle performance
Control for improved vehicle performance
Control of a NOX reductant delivery system
Control of exhaust emissions from an internal combustion engine
Control of exhaust emissions from an internal combustion engine
Control of secondary air to an electrically heated catalyst usin
Control strategy for lean NOx trap regeneration