Which small engines (under 4 horsepower) are CARB certified for on highway usage?

[87Octane]

The link points out the differences in emissions between all electric vehicles, plug in hybrids, hybrid electric vehicles and conventional vehicles:

Alternative Fuels Data Center: Emissions from Electric Vehicles

afdc.energy.gov

California:

vs. National Average:

 

[87Octane]

The part I underlined I assume has to do with drones (and of course by extension small personal aircraft), gasoline and diesel generators and probably boats as well.

Can a gasoline engine + X amount of gasoline pollute less than a electric motor plus X amount of batteries (filled with california sourced electricity) for situations where total weight of the motor and its fuel are a major concern?

 

[darwin]

20 years from now it will be a very different world. Scary or good, dunno. It sure seems the only folks who will be able to afford transportation seems to be the upper middle class and above. Unless you want to be a slave to $1000 monthly payments or above. A base work truck runs $30k if you get a deal and that's now. Seems scary cuzz we're not rich at all.

 

[87Octane]

Elon Musk: Battery Energy Density to Increase 50 Percent by 2024

Musk made the claim ahead of Tesla's planned 'Battery Day' in September.

www.pcmag.com

Musk responded by stating, "400 Wh/kg with high cycle life, produced in volume (not just a lab) is not far. Probably 3 to 4 years."

 

[87Octane]

Plastic internal combustion engines:

#Tech – Polimotor or Plastic and Racing Engine.

You’ve probably never heard of the Polimotor racing engine and its creator, Matty Holtzberg but in a modern and green world chasing ideas to make the automotive industry more efficient and gr…

historicmotorsportcentral.com

Plastic automotive engine - Wikipedia

en.wikipedia.org

This link claims improved thermal efficiency and reduced emissions:

You Won't Believe This: A REAL Plastic Engine - Automotive Plastics

Solvay a chemistry company known for modern innovation for 153 years is a key sponsor for the Polimotor 2 project: an initiative to build an “all-plastic” engine that reduces overall engine weight by up to 30%. How is it possible to take 30% of the weight of an engine block off? The engine...

www.automotiveplastics.com

 

[87Octane]

https://insights.globalspec.com/article/3191/cold-start-engine-emissions

Automakers wishing to reduce the emissions that their gasoline-powered vehicles generate should focus on design changes targeting pollutants that are emitted immediately after a cold start, new research suggests.

The researchers found that almost all emissions in properly functioning new vehicles came out immediately after starting the cars when their engines were cold. Once the new cars warmed up, they had to be driven 100 to 300 miles to match the levels that came out in the first 30 seconds after the engine was turned on. Even malfunctioning and older cars had to travel 50 to 100 miles to release the same amount of emissions as they did within the first minute of a cold start, the researchers found.

 

[Frogslayer]

Seems futile to target 1 minute worth of emissions

 

[87Octane]

Electrically heated catalytic converter:

Catalytic converter heating element slashes emissions

In order to reduce the pollutant emissions of combustion engines, the automotive supplier Eberspächer, which specialises in heating and exhaust systems, has developed an electric heating catalyst (Electrically Heated Catalyst) for the exhaust gas catalytic converters. During the cold-start...

www.eenewsautomotive.com

Eberspächer sees the potential for further emission reduction in fuel-powered passenger cars primarily in the cold-start phase.

The fast-acting electrical heating of the EHC, which acts on the flowing exhaust gas, ensures that the exhaust gas purification system is fully functional within seconds of the engine starting.

 

[87Octane]

Aftermarket Catalytic converters that replace the stock muffler on Honda GX motors:

BlueCAT™ SSI Honda Small Engine for Honda Small Engines

The BlueCAT™ SSI Honda Small Engine is an emission control solution for Honda Small Spark Ignited Engines. A direct fit for Honda Small Engine.

www.nettinc.com

(The one in the above links claims up to 98% reduction in CO, up to 95% reduction in both HC and NOx. This while claiming to have the same backpressure and noise of a stock Honda muffler)

GENCAT Catalytic Converter for small engines

GENCAT catalytic converter for small gas engines, removes 99% of carbon monoxide from exhaust

comtekk.com

(The one in the above link claims up to 99% reduction in CO. Doesn't mention hoe much HC and NOx are lowered but does say they are lowered.)

Honda GASPRO SXT Purifier Mufflers | Catalytic Exhaust Products Ltd

Engage a three way Honda catalytic converter to improve the performance of your facility. Visit our website today, our team will help you out with the proper catalyst converter.

www.catalyticexhaust.com

(The one in the above link claims 88% reduction in CO, 90% reduction in HC and 88% reducton in NOx.)

 

[Wrench]

Aftermarket Catalytic converters that replace the stock muffler on Honda GX motors:

BlueCAT™ SSI Honda Small Engine for Honda Small Engines

The BlueCAT™ SSI Honda Small Engine is an emission control solution for Honda Small Spark Ignited Engines. A direct fit for Honda Small Engine.

www.nettinc.com

(The one in the above links claims up to 98% reduction in CO, up to 95% reduction in both HC and NOx. This while claiming to have the same backpressure and noise of a stock Honda muffler)

GENCAT Catalytic Converter for small engines

GENCAT catalytic converter for small gas engines, removes 99% of carbon monoxide from exhaust

comtekk.com

(The one in the above link claims up to 99% reduction in CO. Doesn't mention hoe much HC and NOx are lowered but does say they are lowered.)

Honda GASPRO SXT Purifier Mufflers | Catalytic Exhaust Products Ltd

Engage a three way Honda catalytic converter to improve the performance of your facility. Visit our website today, our team will help you out with the proper catalyst converter.

www.catalyticexhaust.com

(The one in the above link claims 88% reduction in CO, 90% reduction in HC and 88% reducton in NOx.)

The Cat for a Honda 3 HP engine is only $330
Are you really gonna put one of those on your M/B?