mirror of https://github.com/rusefi/rusefi.git
120 lines
5.4 KiB
C++
120 lines
5.4 KiB
C++
#include "pch.h"
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#include "throttle_model.h"
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// From CFD modeled 70mm throttle
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static const float throttle70mmFlowBins[] = { 2, 5, 10, 20, 30, 40, 60, 80, 85, 90, 91 };
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static const float throttle70mmFlowValues[] = { 0.000095, 0.002, 0.0107, 0.045, 0.103, 0.185, 0.438, 0.74, 0.77, 0.775, 0.775 };
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class MockThrottleModel : public ThrottleModelBase {
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public:
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float effectiveArea(float tps) const override {
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// table is kg/s, function returns g/s
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return 1000 * interpolate2d(tps, throttle70mmFlowBins, throttle70mmFlowValues);
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}
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MOCK_METHOD(float, maxEngineFlow, (float map), (const, override));
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};
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TEST(ThrottleModel, PartThrottle) {
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MockThrottleModel model;
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EXPECT_CALL(model, maxEngineFlow(::testing::_)).WillRepeatedly([](float map) { return map / 100 * 500; });
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// Vary throttle at constant PR/temp
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// 100kPa inlet
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// 45 kPa MAP
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// 0C IAT
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EXPECT_NEAR( 10.56, model.estimateThrottleFlow(100, 10, 45, 0), 1e-1);
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EXPECT_NEAR( 44.41, model.estimateThrottleFlow(100, 20, 45, 0), 1e-1);
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EXPECT_NEAR(101.65, model.estimateThrottleFlow(100, 30, 45, 0), 1e-1);
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EXPECT_NEAR(182.58, model.estimateThrottleFlow(100, 40, 45, 0), 1e-1);
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// Vary inlet pressure
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EXPECT_NEAR(1.0 * 44.41, model.estimateThrottleFlow(100, 20, 45, 0), 1e-1);
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EXPECT_NEAR(1.5 * 44.41, model.estimateThrottleFlow(150, 20, 45, 0), 1e-1);
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}
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TEST(ThrottleModel, InverseFlowLowPressureRatio) {
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MockThrottleModel model;
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EXPECT_NEAR( 2.329, model.throttlePositionForFlow( 0.3, 0.3, 100, 0), 1e-2);
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EXPECT_NEAR( 3.446, model.throttlePositionForFlow( 1, 0.3, 100, 0), 1e-2);
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EXPECT_NEAR( 9.674, model.throttlePositionForFlow( 10, 0.3, 100, 0), 1e-2);
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EXPECT_NEAR(29.711, model.throttlePositionForFlow(100, 0.3, 100, 0), 1e-2);
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EXPECT_NEAR(41.395, model.throttlePositionForFlow(200, 0.3, 100, 0), 1e-2);
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EXPECT_NEAR(57.415, model.throttlePositionForFlow(400, 0.3, 100, 0), 1e-2);
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EXPECT_NEAR(71.255, model.throttlePositionForFlow(600, 0.3, 100, 0), 1e-2);
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EXPECT_NEAR(77.965, model.throttlePositionForFlow(700, 0.3, 100, 0), 1e-2);
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EXPECT_NEAR(83.323, model.throttlePositionForFlow(750, 0.3, 100, 0), 1e-2);
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EXPECT_NEAR(85.070, model.throttlePositionForFlow(760, 0.3, 100, 0), 1e-2);
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// Throttle is maxed out here!
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EXPECT_NEAR(100.00, model.throttlePositionForFlow(770, 0.3, 100, 0), 1e-2);
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EXPECT_NEAR(100.00, model.throttlePositionForFlow(800, 0.3, 100, 0), 1e-2);
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EXPECT_NEAR(100.00, model.throttlePositionForFlow(900, 0.3, 100, 0), 1e-2);
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}
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TEST(ThrottleModel, InverseFlowHighPressureRatio) {
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MockThrottleModel model;
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EXPECT_NEAR( 2.626, model.throttlePositionForFlow( 0.3, 0.9, 100, 0), 1e-2);
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EXPECT_NEAR( 4.437, model.throttlePositionForFlow( 1, 0.9, 100, 0), 1e-2);
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EXPECT_NEAR( 5.738, model.throttlePositionForFlow( 2, 0.9, 100, 0), 1e-2);
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EXPECT_NEAR( 8.571, model.throttlePositionForFlow( 5, 0.9, 100, 0), 1e-2);
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EXPECT_NEAR(11.670, model.throttlePositionForFlow( 10, 0.9, 100, 0), 1e-2);
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EXPECT_NEAR(37.473, model.throttlePositionForFlow(100, 0.9, 100, 0), 1e-2);
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EXPECT_NEAR(51.348, model.throttlePositionForFlow(200, 0.9, 100, 0), 1e-2);
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EXPECT_NEAR(74.510, model.throttlePositionForFlow(400, 0.9, 100, 0), 1e-2);
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EXPECT_NEAR(87.093, model.throttlePositionForFlow(470, 0.9, 100, 0), 1e-2);
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EXPECT_NEAR(88.737, model.throttlePositionForFlow(471, 0.9, 100, 0), 1e-2);
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// Throttle is maxed out here!
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EXPECT_NEAR(100.00, model.throttlePositionForFlow(473, 0.9, 100, 0), 1e-2);
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EXPECT_NEAR(100.00, model.throttlePositionForFlow(500, 0.9, 100, 0), 1e-2);
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EXPECT_NEAR(100.00, model.throttlePositionForFlow(600, 0.9, 100, 0), 1e-2);
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EXPECT_NEAR(100.00, model.throttlePositionForFlow(700, 0.9, 100, 0), 1e-2);
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}
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TEST(ThrottleModel, SmallEngineBigThrottle) {
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MockThrottleModel model;
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// Engine can only flow 200g/s at 100kPa, much less than wide open throttle
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EXPECT_CALL(model, maxEngineFlow(::testing::_)).WillRepeatedly([](float map) { return map / 100 * 200; });
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// v part throttle model v
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EXPECT_NEAR( 81.9, model.estimateThrottleFlow(100, 40, 95, 0), 1e-1);
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EXPECT_NEAR(138.0, model.estimateThrottleFlow(100, 50, 95, 0), 1e-1);
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// ^ part throttle model ^
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// this engine does 0.95PR at 59% throttle, as the throttle is very big for the engine
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// v blend from part throttle to WOT v
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EXPECT_NEAR(190.2, model.estimateThrottleFlow(100, 60, 95, 0), 1e-1);
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EXPECT_NEAR(192.6, model.estimateThrottleFlow(100, 70, 95, 0), 1e-1);
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EXPECT_NEAR(195.1, model.estimateThrottleFlow(100, 80, 95, 0), 1e-1);
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EXPECT_NEAR(197.5, model.estimateThrottleFlow(100, 90, 95, 0), 1e-1);
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// ^ blend from part throttle to WOT ^
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// v WOT v
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EXPECT_NEAR(200.0, model.estimateThrottleFlow(100, 100, 95, 0), 1e-3);
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}
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TEST(ThrottleModel, BigEngineSmallThrottle) {
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MockThrottleModel model;
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// Big engine can flow 2000g/s, much more than wide open throttle will support
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EXPECT_CALL(model, maxEngineFlow(::testing::_)).WillRepeatedly([](float map) { return map / 100 * 2000; });
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// v part throttle model v
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EXPECT_NEAR( 82.0, model.estimateThrottleFlow(100, 40, 95, 0), 1e-1);
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EXPECT_NEAR(138.0, model.estimateThrottleFlow(100, 50, 95, 0), 1e-1);
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EXPECT_NEAR(194.1, model.estimateThrottleFlow(100, 60, 95, 0), 1e-1);
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EXPECT_NEAR(261.0, model.estimateThrottleFlow(100, 70, 95, 0), 1e-1);
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EXPECT_NEAR(327.9, model.estimateThrottleFlow(100, 80, 95, 0), 1e-1);
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EXPECT_NEAR(343.4, model.estimateThrottleFlow(100, 90, 95, 0), 1e-1);
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EXPECT_NEAR(343.4, model.estimateThrottleFlow(100, 100, 95, 0), 1e-1);
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// ^ part throttle model ^
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}
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