System Design » Important Issues
Terminology
- Intermediate Volume Manufacturer
- An engine manufacturer that produces high performance and/or standard performance stern drive/inboard engines for sale in California in combined quantities greater than 75 units but less than 500 units annually.
- Large Volume Manufacturer
- An engine manufacturer that produces high performance and/or standard performance stern drive/inboard engines for sale in California in combined quantities equal to or greater than 500 units annually.
- Model Year
- The engine manufacturer’s annual new model production period which includes January 1 of the calendar year for which the model year is named, ends no later than December 31 of the calendar year, and does not begin earlier than January 2 of the previous calendar year. Where an engine manufacturer has no annual new model production period, model year means the calendar year.
- Non trailerable Boat
- Vessel equal to or greater than 8 meters in length and or 2.6 meters or more wide.
- Note: 8 meters is 26.246 Ft. 2.6 meters is 8.53 Ft.
Diurnal Standards
| Permeation Standards¹ (grams per square meter per day) | Diurnal Standard² (grams per gallon per day) | Test Temperature (degrees Celsius) | |
|---|---|---|---|
| Fuel Hoses | 15 | --- | 23 ± 2 |
| Fuel Tank | 1.5 | --- | 28 ± 2 |
| Trailerable Boat | --- | 0.40 | 25.6 - 32.2 |
| Non trailerable Boat | --- | 0.16 | 27.6 - 30.2 |
¹ Fuel hoses and tank permeation testing requires fuel with 10% ethanol content.
² Diurnal testing requires fuel with 9 pounds per square inch (PSI) Reid Vapor Pressure volatility and a 24-hour fuel temperature cycle.
For 2009 and subsequent model year engines, each boat manufacturer must install an enhanced evaporative control system on every boat that is manufactured for sale, sold, or offered for sale in California that uses a high performance engine.
CARB Alternative to Exhaust Requirement
- Alternate Requirements for Large Volume and Qualified Intermediate Volume Manufacturers
- In lieu of complying with the 5.0 g/kW-hr HC+NOx exhaust standard in Table 2.1(b) for high performance engines
- The manufacturer ensures that a sufficient number of boats using standard performance engines are equipped with enhanced evaporative control systems
- The manufacturer reduces, by other means, emissions sufficient to fully compensate for the change in emission benefits from allowing compliance to the less stringent standard.
- The manufacturer must submit a plan, prior to certification, of any high performance engine family. The Executive Officer must approve a plan before certifying any of the manufacturer’s engine families
- In lieu of complying with the 5.0 g/kW-hr HC+NOx exhaust standard in Table 2.1(b) for high performance engines