MembersPage/Fuel (2006-02-24 17:33:40)

'Is this table suitable?'

Fuel pressure analog signal from sensor is calculated with:

Vout=(c1*Pabs+C0)*Us

With Vsupply at nominal 5V this means

With the req_fuel calculated at 255 kPa Fuelpressure the original PW is altered by 1/1 at Vsens_out = 2.843V

Gives the following look-up table:


P kPa Vout devision multiplier

45.8 0.452 0 0.179607843

47.2 0.468 1 0.185098039

48.6 0.484 2 0.190588235

50 0.5 3 0.196078431

51.4 0.516 4 0.201568627

52.8 0.532 5 0.207058824

54.2 0.548 6 0.21254902

55.6 0.564 7 0.218039216

57 0.58 8 0.223529412

58.4 0.596 9 0.229019608

59.8 0.612 10 0.234509804

61.2 0.628 11 0.24

62.6 0.644 12 0.245490196

64 0.66 13 0.250980392

65.4 0.676 14 0.256470588

66.8 0.692 15 0.261960784

68.2 0.708 16 0.26745098

69.6 0.724 17 0.272941176

71 0.74 18 0.278431373

72.4 0.756 19 0.283921569

73.8 0.772 20 0.289411765

75.2 0.788 21 0.294901961

76.6 0.804 22 0.300392157

78 0.82 23 0.305882353

79.4 0.836 24 0.311372549

80.8 0.852 25 0.316862745

82.2 0.868 26 0.322352941

83.6 0.884 27 0.327843137

85 0.9 28 0.333333333

86.4 0.916 29 0.338823529

87.8 0.932 30 0.344313725

89.2 0.948 31 0.349803922

90.6 0.964 32 0.355294118

92 0.98 33 0.360784314

93.4 0.996 34 0.36627451

94.8 1.012 35 0.371764706

96.2 1.028 36 0.377254902

97.6 1.044 37 0.382745098

99 1.06 38 0.388235294

100.4 1.076 39 0.39372549

101.8 1.092 40 0.399215686

103.2 1.108 41 0.404705882

104.6 1.124 42 0.410196078

106 1.14 43 0.415686275

107.4 1.156 44 0.421176471

108.8 1.172 45 0.426666667

110.2 1.188 46 0.432156863

111.6 1.204 47 0.437647059

113 1.22 48 0.443137255

114.4 1.236 49 0.448627451

115.8 1.252 50 0.454117647

117.2 1.268 51 0.459607843

118.6 1.284 52 0.465098039

120 1.3 53 0.470588235

121.4 1.316 54 0.476078431

122.8 1.332 55 0.481568627

124.2 1.348 56 0.487058824

125.6 1.364 57 0.49254902

127 1.38 58 0.498039216

128.4 1.396 59 0.503529412

129.8 1.412 60 0.509019608

131.2 1.428 61 0.514509804

132.6 1.444 62 0.52

134 1.46 63 0.525490196

135.4 1.476 64 0.530980392

136.8 1.492 65 0.536470588

138.2 1.508 66 0.541960784

139.6 1.524 67 0.54745098

141 1.54 68 0.552941176

142.4 1.556 69 0.558431373

143.8 1.572 70 0.563921569

145.2 1.588 71 0.569411765

146.6 1.604 72 0.574901961

148 1.62 73 0.580392157

149.4 1.636 74 0.585882353

150.8 1.652 75 0.591372549

152.2 1.668 76 0.596862745

153.6 1.684 77 0.602352941

155 1.7 78 0.607843137

156.4 1.716 79 0.613333333

157.8 1.732 80 0.618823529

159.2 1.748 81 0.624313725

160.6 1.764 82 0.629803922

162 1.78 83 0.635294118

163.4 1.796 84 0.640784314

164.8 1.812 85 0.64627451

166.2 1.828 86 0.651764706

167.6 1.844 87 0.657254902

169 1.86 88 0.662745098

170.4 1.876 89 0.668235294

171.8 1.892 90 0.67372549

173.2 1.908 91 0.679215686

174.6 1.924 92 0.684705882

176 1.94 93 0.690196078

177.4 1.956 94 0.695686275

178.8 1.972 95 0.701176471

180.2 1.988 96 0.706666667

181.6 2.004 97 0.712156863

183 2.02 98 0.717647059

184.4 2.036 99 0.723137255

185.8 2.052 100 0.728627451

187.2 2.068 101 0.734117647

188.6 2.084 102 0.739607843

190 2.1 103 0.745098039

191.4 2.116 104 0.750588235

192.8 2.132 105 0.756078431

194.2 2.148 106 0.761568627

195.6 2.164 107 0.767058824

197 2.18 108 0.77254902

198.4 2.196 109 0.778039216

199.8 2.212 110 0.783529412

201.2 2.228 111 0.789019608

202.6 2.244 112 0.794509804

204 2.26 113 0.8

205.4 2.276 114 0.805490196

206.8 2.292 115 0.810980392

208.2 2.308 116 0.816470588

209.6 2.324 117 0.821960784

211 2.34 118 0.82745098

212.4 2.356 119 0.832941176

213.8 2.372 120 0.838431373

215.2 2.388 121 0.843921569

216.6 2.404 122 0.849411765

218 2.42 123 0.854901961

219.4 2.436 124 0.860392157

220.8 2.452 125 0.865882353

222.2 2.468 126 0.871372549

223.6 2.484 127 0.876862745

225 2.5 128 0.882352941

226.4 2.516 129 0.887843137

227.8 2.532 130 0.893333333

229.2 2.548 131 0.898823529

230.6 2.564 132 0.904313725

232 2.58 133 0.909803922

233.4 2.596 134 0.915294118

234.8 2.612 135 0.920784314

236.2 2.628 136 0.92627451

237.6 2.644 137 0.931764706

239 2.66 138 0.937254902

240.4 2.676 139 0.942745098

241.8 2.692 140 0.948235294

243.2 2.708 141 0.95372549

244.6 2.724 142 0.959215686

246 2.74 143 0.964705882

247.4 2.756 144 0.970196078

248.8 2.772 145 0.975686275

250.2 2.788 146 0.981176471

251.6 2.804 147 0.986666667

253 2.82 148 0.992156863

254.4 2.836 149 0.997647059

255.8 2.852 150 1.003137255

257.2 2.868 151 1.008627451

258.6 2.884 152 1.014117647

260 2.9 153 1.019607843

261.4 2.916 154 1.025098039

262.8 2.932 155 1.030588235

264.2 2.948 156 1.036078431

265.6 2.964 157 1.041568627

267 2.98 158 1.047058824

268.4 2.996 159 1.05254902

269.8 3.012 160 1.058039216

271.2 3.028 161 1.063529412

272.6 3.044 162 1.069019608

274 3.06 163 1.074509804

275.4 3.076 164 1.08

276.8 3.092 165 1.085490196

278.2 3.108 166 1.090980392

279.6 3.124 167 1.096470588

281 3.14 168 1.101960784

282.4 3.156 169 1.10745098

283.8 3.172 170 1.112941176

285.2 3.188 171 1.118431373

286.6 3.204 172 1.123921569

288 3.22 173 1.129411765

289.4 3.236 174 1.134901961

290.8 3.252 175 1.140392157

292.2 3.268 176 1.145882353

293.6 3.284 177 1.151372549

295 3.3 178 1.156862745

296.4 3.316 179 1.162352941

297.8 3.332 180 1.167843137

299.2 3.348 181 1.173333333

300.6 3.364 182 1.178823529

302 3.38 183 1.184313725

303.4 3.396 184 1.189803922

304.8 3.412 185 1.195294118

306.2 3.428 186 1.200784314

307.6 3.444 187 1.20627451

309 3.46 188 1.211764706

310.4 3.476 189 1.217254902

311.8 3.492 190 1.222745098

313.2 3.508 191 1.228235294

314.6 3.524 192 1.23372549

316 3.54 193 1.239215686

317.4 3.556 194 1.244705882

318.8 3.572 195 1.250196078

320.2 3.588 196 1.255686275

321.6 3.604 197 1.261176471

323 3.62 198 1.266666667

324.4 3.636 199 1.272156863

325.8 3.652 200 1.277647059

327.2 3.668 201 1.283137255

328.6 3.684 202 1.288627451

330 3.7 203 1.294117647

331.4 3.716 204 1.299607843

332.8 3.732 205 1.305098039

334.2 3.748 206 1.310588235

335.6 3.764 207 1.316078431

337 3.78 208 1.321568627

338.4 3.796 209 1.327058824

339.8 3.812 210 1.33254902

341.2 3.828 211 1.338039216

342.6 3.844 212 1.343529412

344 3.86 213 1.349019608

345.4 3.876 214 1.354509804

346.8 3.892 215 1.36

348.2 3.908 216 1.365490196

349.6 3.924 217 1.370980392

351 3.94 218 1.376470588

352.4 3.956 219 1.381960784

353.8 3.972 220 1.38745098

355.2 3.988 221 1.392941176

356.6 4.004 222 1.398431373

358 4.02 223 1.403921569

359.4 4.036 224 1.409411765

360.8 4.052 225 1.414901961

362.2 4.068 226 1.420392157

363.6 4.084 227 1.425882353

365 4.1 228 1.431372549

366.4 4.116 229 1.436862745

367.8 4.132 230 1.442352941

369.2 4.148 231 1.447843137

370.6 4.164 232 1.453333333

372 4.18 233 1.458823529

373.4 4.196 234 1.464313725

374.8 4.212 235 1.469803922

376.2 4.228 236 1.475294118

377.6 4.244 237 1.480784314

379 4.26 238 1.48627451

380.4 4.276 239 1.491764706

381.8 4.292 240 1.497254902

383.2 4.308 241 1.502745098

384.6 4.324 242 1.508235294

386 4.34 243 1.51372549

387.4 4.356 244 1.519215686

388.8 4.372 245 1.524705882

390.2 4.388 246 1.530196078

391.6 4.404 247 1.535686275

393 4.42 248 1.541176471

394.4 4.436 249 1.546666667

395.8 4.452 250 1.552156863

397.2 4.468 251 1.557647059

398.6 4.484 252 1.563137255

400 4.5 253 1.568627451

401.4 4.516 254 1.574117647

402.8 4.532 255 1.579607843