[Code of Federal Regulations]
[Title 40, Volume 30]
[Revised as of July 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR1048.115]

[Page 549-550]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 1048_CONTROL OF EMISSIONS FROM NEW, LARGE NONROAD SPARK-IGNITION 
ENGINES--Table of Contents
 
          Subpart B_Emission Standards and Related Requirements
 
Sec. 1048.115  What other requirements must my engines meet?

    Your engines must meet the following requirements:
    (a) Closed crankcase. Your engines may not vent crankcase emissions 
into the atmosphere throughout their useful life, with the following 
exception: your engines may vent crankcase emissions if you measure and 
include these crankcase emissions with all measured exhaust emissions.
    (b) Torque broadcasting. Electronically controlled engines must 
broadcast their speed and output shaft torque (in newton-meters) on 
their controller area networks. Engines may alternatively broadcast a 
surrogate value for torque that can be read with a remote device. This 
information is necessary for testing engines in the field (see 40 CFR 
1065.515). This requirement applies beginning in the 2007 model year. 
Small-volume engine manufacturers may omit this requirement.
    (c) EPA access to broadcast information. If we request it, you must 
provide us any hardware or tools we would need to readily read, 
interpret, and record all information broadcast by an engine's on-board 
computers and electronic control modules. If you broadcast a surrogate 
parameter for torque values, you must provide us what we need to convert 
these into torque units. We will not ask for hardware or tools if they 
are readily available commercially.
    (d) Emission sampling capability. Produce all your engines to allow 
sampling of exhaust emissions in the field without damaging the engine 
or equipment. Show in your application for certification how this can be 
done in a way that prevents diluting the exhaust sample with ambient 
air. To do this, you might simply allow for extending the exhaust pipe 
by 20 cm; you might also install exhaust ports downstream of any 
aftertreatment devices.
    (e) Adjustable parameters. Engines that have adjustable parameters 
must meet all the requirements of this part for any adjustment in the 
physically adjustable range.
    (1) We do not consider an operating parameter adjustable if you 
permanently seal it or if ordinary tools cannot readily access it.
    (2) We may require that you set adjustable parameters to any 
specification within the adjustable range during certification testing, 
production-line testing, selective enforcement auditing, or any in-use 
testing.
    (f) Prohibited controls. You may not design your engines with 
emission-control devices, systems, or elements of design that cause or 
contribute to an unreasonable risk to public health, welfare, or safety 
while operating. For example, this would apply if the engine emits a 
noxious or toxic substance it would otherwise not emit that contributes 
to such an unreasonable risk.
    (g) Defeat devices. You may not equip your engines with a defeat 
device. A defeat device is an auxiliary emission-control device that 
reduces the effectiveness of emission controls under conditions you may 
reasonably expect the engine to encounter during normal operation and 
use. This does not apply to auxiliary emission-control devices

[[Page 550]]

you identify in your certification application if any of the following 
is true:
    (1) The conditions of concern were substantially included in your 
prescribed duty cycles.
    (2) You show your design is necessary to prevent catastrophic engine 
(or equipment) damage or accidents.
    (3) The reduced effectiveness applies only to starting the engine.