40 C.F.R. § 1042 app III to Part 1042
(a) The following definitions apply for this Appendix III:
(1) Percent power means the percentage of the maximum power achieved at Maximum Test Speed (or at Maximum Test Torque for constant-speed engines).
(2) Percent speed means the percentage of Maximum Test Speed.
(b) Figure 1 of this Appendix illustrates the default NTE zone for marine engines certified using the duty cycle specified in § 1042.505(b)(1) , except for variable-speed propulsion marine engines used with controllable-pitch propellers or with electrically coupled propellers, as follows:
(1) Subzone 1 is defined by the following boundaries:
(i) Percent power ÷ 100 [GREATER THAN] 0.7 · (percent speed ÷ 100)2.5.
(ii) Percent power ÷ 100 [LESS THAN EQUAL TO] (percent speed ÷ 90)3.5.
(iii) Percent power ÷ 100 [GREATER THAN EQUAL TO] 3.0 · (1-percent speed ÷ 100).
(2) Subzone 2 is defined by the following boundaries:
(i) Percent power ÷ 100 [GREATER THAN EQUAL TO] 0.7 · (percent speed ÷ 100)2.5.
(ii) Percent power ÷ 100 [LESS THAN EQUAL TO] (percent speed ÷ 90)3.5.
(iii) Percent power ÷ 100 [LESS THAN] 3.0 · (1-percent speed ÷ 100).
(iv) Percent speed ÷ 100 [GREATER THAN EQUAL TO] 0.7.
(3) Note that the line separating Subzone 1 and Subzone 2 includes the following endpoints:
(i) Percent speed = 78.9 percent; Percent power = 63.2 percent.
(ii) Percent speed = 84.6 percent; Percent power = 46.1 percent.
(c) Figure 2 of this Appendix illustrates the default NTE zone for recreational marine engines certified using the duty cycle specified in § 1042.505(b)(2) , except for variable-speed marine engines used with controllable-pitch propellers or with electrically coupled propellers, as follows:
(1) Subzone 1 is defined by the following boundaries:
(i) Percent power ÷ 100 [GREATER THAN EQUAL TO] 0.7 · (percent speed ÷ 100)2.5.
(ii) Percent power ÷ 100 [LESS THAN EQUAL TO] (percent speed ÷ 90)3.5.
(iii) Percent power ÷ 100 [GREATER THAN EQUAL TO] 3.0 · (1-percent speed ÷ 100).
(iv) Percent power [LESS THAN EQUAL TO] 95 percent.
(2) Subzone 2 is defined by the following boundaries:
(i) Percent power ÷ 100 [GREATER THAN EQUAL TO] 0.7 · (percent speed ÷ 100)2.5.
(ii) Percent power ÷ 100 [LESS THAN EQUAL TO] (percent speed ÷ 90)3.5.
(iii) Percent power ÷ 100 [LESS THAN] 3.0 · (1-percent speed ÷ 100).
(iv) Percent speed [GREATER THAN EQUAL TO] 70 percent.
(3) Subzone 3 is defined by the following boundaries:
(i) Percent power ÷ 100 [LESS THAN EQUAL TO] (percent speed ÷ 90)3.5.
(ii) Percent power [GREATER THAN] 95 percent.
(4) Note that the line separating Subzone 1 and Subzone 3 includes a point at Percent speed = 88.7 percent and Percent power = 95.0 percent. See paragraph (b)(3) of this appendix regarding the line separating Subzone 1 and Subzone 2.
(d) Figure 3 of this Appendix illustrates the default NTE zone for variable-speed marine engines used with controllable-pitch propellers or with electrically coupled propellers that are certified using the duty cycle specified in § 1042.505(b)(1), (2), or (3) , as follows:
(1) Subzone 1 is defined by the following boundaries:
(i) Percent power ÷ 100 [GREATER THAN EQUAL TO] 0.7 · (percent speed ÷ 100)2.5.
(ii) Percent power ÷ 100 [GREATER THAN EQUAL TO] 3.0 · (1-percent speed ÷ 100).
(iii) Percent speed [GREATER THAN EQUAL TO] 78.9 percent.
(2) Subzone 2a is defined by the following boundaries:
(i) Percent power ÷ 100 [GREATER THAN EQUAL TO] 0.7 · (percent speed ÷ 100)2.5.
(ii) Percent speed [GREATER THAN EQUAL TO]70 percent.
(iii) Percent speed [LESS THAN]78.9 percent, for Percent power [GREATER THAN]63.3 percent.
(iv) Percent power ÷ 100 [LESS THAN]3.0 · (1-percent speed ÷ 100), for Percent speed [GREATER THAN EQUAL TO]78.9 percent.
(3) Subzone 2b is defined by the following boundaries:
(i) The line formed by connecting the following two points on a plot of speed-vs.-power:
(A) Percent speed = 70 percent; Percent power = 28.7 percent.
(B) Percent power = 40 percent; Speed = governed speed.
(ii) Percent power ÷ 100 [LESS THAN] 0.7 · (percent speed ÷ 100)2.5.
(4) Note that the line separating Subzone 1 and Subzone 2a includes the following endpoints:
(i) Percent speed = 78.9 percent; Percent power = 63.3 percent.
(ii) Percent speed = 84.6 percent; Percent power = 46.1 percent.
(e) Figure 4 of this Appendix illustrates the default NTE zone for constant-speed engines certified using a duty cycle specified in § 1042.505(b)(3) or (4) , as follows:
(1) Subzone 1 is defined by the following boundaries:
(i) Percent power [GREATER THAN EQUAL TO]70 percent.
(ii) [Reserved]
(2) Subzone 2 is defined by the following boundaries:
(i) Percent power [LESS THAN]70 percent.
(ii) Percent power [GREATER THAN EQUAL TO]40 percent.
(f) Figure 5 of this Appendix illustrates the default NTE zone for variable-speed auxiliary marine engines certified using the duty cycle specified in § 1042.505(b) 5)(ii) or (iii), as follows:
(1) The default NTE zone is defined by the boundaries specified in 40 CFR 86.1370(b)(1), (2), and (4) .
(2) A special PM subzone is defined in 40 CFR 1039.515(b) .
40 C.F.R. 1042 app III to Part 1042