Radio frequency-based particulate loading monitoring system

Ramjet engine equipped with a plurality of carburated air supply

Ramjet with adjustable working duct casings

Rapid catalyst warm-up control device for internal...

Reactor for afterburning of unburned constituents in the exhaust

Recirculatory System

Reducing agent dosing device

Reducing agent dosing device

Reducing agent for emission control system, reducing-agent...

Reducing NO x emissions with a staged catalyst

Reducing NO.sub.x emissions from an engine by selective catalyti

Reducing NO.sub.x emissions from an engine while maximizing fuel

Reducing oxides of nitrogen using hydrogen generated from...

Reducing oxides of nitrogen using reformate generated from...

Reducing pollution from internal combustion engines

Reducing undesirable components of automotive exhaust gas

Reductant distributor for lean NOx trap

Reductant injection system diagnostics

Reduction of exhaust smoke emissions following extended...

Reed valve assembly