Dual-fuel engine controller simulation test system

Abstract

The invention discloses a dual-fuel engine controller simulation test system, and is used for realizing an HIL test of an HPDI engine controller. The system includes a real-time simulator and an engine controller, wherein the real-time simulator is used for operating an environmental model, a driver model and a full vehicle model, sending vehicle environment parameters output by the environmental model, driver behavior parameters output by the driver model and each vehicle operating parameter output by the full vehicle model to the engine controller, and receiving a control signal sent by the engine controller, and continuing to operate the environmental model, the driver model and the full vehicle model according to the control signal, and the full vehicle model includes a dual-fuel engine model (including a gas circuit model, a fuel supply model, a cylinder combustion model, and a heat balance model), an accessory model, a drive system model, and a vehicle longitudinal power model. The engine controller is used for determining the operating condition of the engine according to the vehicle environment parameters, the driver behavior parameters and the vehicle operating parameters and generating and sending the control signal.

Description

technical field [0001] The invention relates to the field of engine control, in particular to a dual-fuel engine controller simulation test system. Background technique [0002] The development of vehicle engine ECU (Electronic Control Unit, electronic control unit) usually adopts the modern V process mode of system requirements, conceptual design, application software modeling, application layer and underlying code integration, software testing, and verification. In the process of testing the engine ECU, the traditional bench and vehicle online test verification method consumes a lot of manpower and material resources, the problem is not easy to reproduce, it is difficult to operate in extreme conditions, and there are risk factors; and the open-loop manual signal occurs The controller cannot simulate dynamic and closed-loop conditions. The HIL (Hardware-In-Loop, hardware in the loop) simulation test simulates the real operating environment through the simulation of the co...

AI Technical Summary

Problems solved by technology

However, a new type of HPDI (High Pressure Direct Injection, high pressure direct injection) natural gas and diesel dual-fuel engine uses diesel pilot ignition to realize the technology of natural gas in-cylinder direct injection, and will switch fuel modes as the working conditions change. , its control involves diesel and natural gas dual fuel, which is more complex than the traditional single fuel engine control logic

The existing single-fuel engine ECU HIL simulation scheme cannot meet the HIL test requirements of high-pressure direct-injection natural gas and diesel dual-fuel engine ECUs, that is, there is no HIL test system for high-pressure direct-injection dual-fuel engine ECUs in the prior art

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