injector_model.h

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#pragma once
 
#include <rusefi/expected.h>
#include "injector_model_generated.h"
#include "engine_module.h"
 
struct IInjectorModel : public EngineModule {
    virtual void prepare() = 0;
    virtual floatms_t getInjectionDuration(float fuelMassGram) const = 0;
    virtual float getFuelMassForDuration(floatms_t duration) const = 0;
    virtual floatms_t getDeadtime() const = 0;
};
 
class InjectorModelBase : public IInjectorModel, public injector_model_s {
public:
    void prepare() override;
    floatms_t getInjectionDuration(float fuelMassGram) const override;
    float getFuelMassForDuration(floatms_t duration) const override;
 
    virtual float getInjectorFlowRatio() = 0;
    virtual void updateState() = 0;
    virtual expected<float> getFuelDifferentialPressure() const = 0;
    virtual expected<float> getFuelPressure() const = 0;
 
    virtual float getBaseFlowRate() const = 0;
 
    virtual InjectorNonlinearMode getNonlinearMode() const = 0;
    floatms_t getBaseDurationImpl(float fuelMassGram) const;
    virtual floatms_t correctInjectionPolynomial(float floatms_t) const;
 
    // Ford small pulse model
    virtual float getSmallPulseFlowRate() const = 0;
    virtual float getSmallPulseBreakPoint() const = 0;
 
private:
    // Mass flow rate for large-pulse flow, g/s
    float m_massFlowRate = 0;
 
    // Break point below which the "small pulse" slope is used, grams
    float m_smallPulseBreakPoint = 0;
 
    // Flow rate for small pulses, g/s
    float m_smallPulseFlowRate = 0;
 
    // Correction adder for small pulses to correct for small/large pulse kink, ms
    float m_smallPulseOffset = 0;
};
 
class InjectorModelWithConfig : public InjectorModelBase {
public:
    InjectorModelWithConfig(const injector_s* const cfg);
 
    floatms_t getDeadtime() const override;
    float getBaseFlowRate() const override;
    float getInjectorFlowRatio() override;
    void updateState() override;
    expected<float> getFuelDifferentialPressure() const override;
    expected<float> getFuelPressure() const override;
    floatms_t getInjectionDuration(float fuelMassGram) const override;
 
    using interface_t = IInjectorModel; // Mock interface
private:
    [[nodiscard]] virtual injector_compensation_mode_e getInjectorCompensationMode() const = 0;
    [[nodiscard]] virtual float getFuelReferencePressure() const = 0;
 
    const injector_s* const m_cfg;
};
 
struct InjectorModelPrimary : InjectorModelWithConfig {
    InjectorModelPrimary();
 
    InjectorNonlinearMode getNonlinearMode() const override;
 
    // Ford small pulse model
    float getSmallPulseFlowRate() const override;
    float getSmallPulseBreakPoint() const override;
private:
    [[nodiscard]] injector_compensation_mode_e getInjectorCompensationMode() const final;
    [[nodiscard]] float getFuelReferencePressure() const final;
};
 
struct InjectorModelSecondary : InjectorModelWithConfig {
    InjectorModelSecondary();
 
    InjectorNonlinearMode getNonlinearMode() const override;
 
    // Ford small pulse model
    float getSmallPulseFlowRate() const override;
    float getSmallPulseBreakPoint() const override;
private:
    [[nodiscard]] injector_compensation_mode_e getInjectorCompensationMode() const final;
    [[nodiscard]] float getFuelReferencePressure() const final;
};