In addition, a new exhaust gas recirculation system improved emissions control.

Most modern engines now need exhaust gas recirculation to meet emissions standards.

Emissions are claimed to be well below 10 parts per million even without exhaust gas recirculation.

Emissions regulation included the fitting of an exhaust gas recirculation system.

Redesign of a brick oven with exhaust gas recirculation control pollutants.

The system will also allow some exhaust gas recirculation in certain periods to further reduce exhaust pollutants.

Problem is the burners don't really exist and the exhaust gas recirculation for temperature moderation needs to be perfected.

The Tipo has a three-way catalytic converter and exhaust gas recirculation valve.

The use of exhaust gas recirculation and catalytic converters in motor vehicle engines have significantly reduced emissions.

In one study, complex engine controls and increased exhaust gas recirculation allowed a compression ratio of 19.5 with fuels ranging from neat ethanol to E50.

In spark ignition engines, both alcohols can run at a much higher exhaust gas recirculation rates and with higher compression ratios.

It also lacked an emissions control component called Exhaust gas recirculation that is required by law in North America and Europe.

This is necessary for emission controls such as exhaust gas recirculation and catalytic converters that reduce smog and other atmospheric pollutants.

The engine must be run with a lowSAP oil because of the nature of the particulate filter and exhaust gas recirculation valve.

The engine also features cooled exhaust gas recirculation (cold area specification models only) to reduce pumping losses and reduce NO emissions.

Operating conditions are defined by these engine parameters: lambda, engine load, internal exhaust gas recirculation, engine speed, and spark advance.

The changes included the addition of an exhaust gas recirculation (EGR) system, and a variable geometry turbocharger system to improve torque.

Exhaust gas recirculation (EGR)

Increasingly stringent emission standards added EGR (exhaust gas recirculation) valves to engines, and accordingly horsepower figures continued to drop.

They have reduced their emissions by more than 50% by purchasing new motorcoaches outfitted with exhaust gas recirculation (EGR) engines.

It has an electronic injection pump, electronically-controlled, vacuum-actuated exhaust gas recirculation, and a special catalyst to control oxides of nitrogen (NOx).

An owner's handbook supplement for US Federal models indicates that the emissions control system used a catalytic converter, exhaust gas recirculation, and secondary air injection.

Some of the pressure created during the exhaust stroke flows into the intake manifold, having the effect of exhaust gas recirculation (EGR).

The engine received a redesigned throttle position sensor (TPS) as well as a new exhaust gas recirculation system and knock sensor.

This processor controlled fuel mixture and injection timing, spark advance (often in conjunction with a separate spark module), exhaust gas recirculation, and other engine functions.