Internal-combustion engine with waste heat reclamation and utilization function and control method

Abstract

The invention provides an internal-combustion engine with waste heat reclamation and utilization function and a control method, and particularly relates to exhaust waste heat reclamation and utilization, fuel supply and combustion control of an internal-combustion engine. The device combined with an electric control system of a traditional spark ignition internal-combustion engine can realize reclamation and utilization of exhaust energy of the internal-combustion engine. The device does not reclaim the exhaust energy when the internal-combustion engine is in the working conditions of start, idle speed and high load, reclaims the exhaust energy when the internal-combustion engine is in the working condition of partial load, realizes thin combustion of hot air of the partial load and a large restrictor of the internal-combustion engine by heating the inlet air, and greatly reduces the oil consumption and emission of the partial load of the spark ignition internal-combustion engine for a vehicle. The device has the advantages of simple structure, easy manufacture, low cost and flexible control, can be used for reforming the vehicle internal-combustion engine, can be applied to the internal-combustion engine of a new vehicle, and has wide market prospect and good energy conservation and emission reduction effects.

Description

technical field [0001] The invention provides an internal combustion engine with waste heat recovery and utilization functions and a control method, in particular to recovery and utilization of exhaust waste heat, fuel supply and combustion control of the internal combustion engine. Background technique [0002] Since the 1970s, with the widespread application of electronic technology and exhaust gas after-treatment technology, the fuel consumption and harmful emissions of internal combustion engines have been greatly reduced. The traditional gasoline engine belongs to premixed homogeneous combustion. Due to the limitation of many factors such as knocking, the compression ratio is low and the thermal efficiency is low. The use of electronic control and exhaust after-treatment devices can make the gasoline engine achieve lower emissions. Compared with gasoline engines, diesel engines have higher compression ratio, higher thermal efficiency and superior fuel economy. However, ...

AI Technical Summary

Problems solved by technology

The traditional gasoline engine adopts stoichiometric combustion and mechanical throttle to adjust the intake air volume. At part load, the thermal efficiency is low, the exhaust temperature is high, and the intake air flow loss is large. Since the gasoline engine works at part load most of the time, thus Resulting in lower overall thermal efficiency of gasoline engine

Images