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7 | 7 | To make changes, update the MATLAB code and republish this document. |
8 | 8 | --> |
9 | 9 | <title>Hydromechanical Power Split CVT</title> |
10 | | -<meta name="generator" content="MATLAB 25.1"> |
| 10 | +<meta name="generator" content="MATLAB 25.2"> |
11 | 11 | <link rel="schema.DC" href="http://purl.org/dc/elements/1.1/"> |
12 | 12 | <meta name="DC.date" content="2025-10-31"> |
13 | 13 | <meta name="DC.source" content="ssc_hydromech_power_split_cvt.m"> |
@@ -176,25 +176,25 @@ <h2 id="1">Model</h2> |
176 | 176 | </p> |
177 | 177 | <img vspace="5" hspace="5" src="ssc_hydromech_power_split_cvt_09.png" alt=""> <h2 id="10">Simulation Results: Accelerate and Decelerate, Abstract CVT</h2> |
178 | 178 | <p>Run acceleration and deceleration test with the abstract CVT.</p> |
179 | | -<img vspace="5" hspace="5" src="ssc_hydromech_power_split_cvt_10.png" alt=""> <pre class="codeoutput">Elapsed Sim Time = 0.77735 |
| 179 | +<img vspace="5" hspace="5" src="ssc_hydromech_power_split_cvt_10.png" alt=""> <pre class="codeoutput">Elapsed Sim Time = 0.79727 |
180 | 180 | </pre> |
181 | 181 | <img vspace="5" hspace="5" src="ssc_hydromech_power_split_cvt_11.png" alt=""> <img vspace="5" hspace="5" src="ssc_hydromech_power_split_cvt_12.png" alt=""> <h2 id="13">Simulation Results: Accelerate and Decelerate, Hydrostatic CVT</h2> |
182 | 182 | <p>Run acceleration and deceleration test with the hydrostatic CVT.</p> |
183 | | -<img vspace="5" hspace="5" src="ssc_hydromech_power_split_cvt_13.png" alt=""> <pre class="codeoutput">Elapsed Sim Time = 0.99659 |
| 183 | +<img vspace="5" hspace="5" src="ssc_hydromech_power_split_cvt_13.png" alt=""> <pre class="codeoutput">Elapsed Sim Time = 1.004 |
184 | 184 | </pre> |
185 | 185 | <img vspace="5" hspace="5" src="ssc_hydromech_power_split_cvt_14.png" alt=""> <img vspace="5" hspace="5" src="ssc_hydromech_power_split_cvt_15.png" alt=""> <img vspace="5" hspace="5" src="ssc_hydromech_power_split_cvt_16.png" alt=""> <h2 id="16">Simulation Results: Accelerate and Decelerate, Electrical CVT</h2> |
186 | 186 | <p>Run acceleration and deceleration test with the electrical CVT.</p> |
187 | | -<img vspace="5" hspace="5" src="ssc_hydromech_power_split_cvt_17.png" alt=""> <pre class="codeoutput">Elapsed Sim Time = 0.71518 |
| 187 | +<img vspace="5" hspace="5" src="ssc_hydromech_power_split_cvt_17.png" alt=""> <pre class="codeoutput">Elapsed Sim Time = 0.73059 |
188 | 188 | </pre> |
189 | 189 | <img vspace="5" hspace="5" src="ssc_hydromech_power_split_cvt_18.png" alt=""> <img vspace="5" hspace="5" src="ssc_hydromech_power_split_cvt_19.png" alt=""> <img vspace="5" hspace="5" src="ssc_hydromech_power_split_cvt_20.png" alt=""> <h2 id="19">Simulation Results: Accelerate and Decelerate, Power Split CVT</h2> |
190 | 190 | <p>Run acceleration and deceleration test with the power split CVT.</p> |
191 | | -<img vspace="5" hspace="5" src="ssc_hydromech_power_split_cvt_21.png" alt=""> <pre class="codeoutput">Elapsed Sim Time = 12.2503 |
| 191 | +<img vspace="5" hspace="5" src="ssc_hydromech_power_split_cvt_21.png" alt=""> <pre class="codeoutput">Elapsed Sim Time = 12.2234 |
192 | 192 | </pre> |
193 | 193 | <img vspace="5" hspace="5" src="ssc_hydromech_power_split_cvt_22.png" alt=""> <img vspace="5" hspace="5" src="ssc_hydromech_power_split_cvt_23.png" alt=""> <img vspace="5" hspace="5" src="ssc_hydromech_power_split_cvt_24.png" alt=""> <img vspace="5" hspace="5" src="ssc_hydromech_power_split_cvt_25.png" alt=""> <h2 id="22">Comparison of CVT Models</h2> |
194 | 194 | <p>The following plot compares the input torque for tests with the power split CVT and the abstract CVT models. The input shaft is spun at a fixed velocity, so we can see that the abstract CVT has been tuned to give similar performance as the power split hydromechanical CVT.</p> |
195 | 195 | <p>The power split hydromechanical CVT is more efficient than the hydrostatic CVT for this drive cycle. The parallel mechanical path has a higher efficiency, and as a result for this test that goes up to maximum speed and back down again the losses are lower for power split CVT than the pure hydrostatic CVT.</p> |
196 | 196 | <img vspace="5" hspace="5" src="ssc_hydromech_power_split_cvt_26.png" alt=""> <p class="footer">Copyright 2023-2025 The MathWorks, Inc.<br> |
197 | | -<a href="https://www.mathworks.com/products/matlab/">Published with MATLAB® R2025a</a> |
| 197 | +<a href="https://www.mathworks.com/products/matlab/">Published with MATLAB® R2025b</a> |
198 | 198 | <br> |
199 | 199 | </p> |
200 | 200 | </div> |
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