44 lines
1.6 KiB
C++
44 lines
1.6 KiB
C++
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#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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return 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 * 0.5f; });
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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(0.01056, model.estimateThrottleFlow(100, 10, 45, 0), 1e-4);
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EXPECT_NEAR(0.04441, model.estimateThrottleFlow(100, 20, 45, 0), 1e-4);
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EXPECT_NEAR(0.10165, model.estimateThrottleFlow(100, 30, 45, 0), 1e-4);
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EXPECT_NEAR(0.18258, model.estimateThrottleFlow(100, 40, 45, 0), 1e-4);
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// Vary inlet pressure
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EXPECT_NEAR(1.0 * 0.04441, model.estimateThrottleFlow(100, 20, 45, 0), 1e-4);
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EXPECT_NEAR(1.5 * 0.04441, model.estimateThrottleFlow(150, 20, 45, 0), 1e-4);
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}
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// TEST(ThrottleModel, WideOpen) {
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// MockThrottleModel model;
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// // Engine can only flow 0.5kg/s at 100kPa
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// EXPECT_CALL(model, maxEngineFlow(::testing::_)).WillRepeatedly([](float map) { return map / 100 * 0.5f; });
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// EXPECT_NEAR(0.5f, model.estimateThrottleFlow(95, 90, 98, 0), 1e-4);
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// }
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