Method for the exhaust-gas aftertreatment of an internal combustion engine having an exhaust-gas duct and a three-way catalytic converter arranged in the exhaust-gas duct , a particle filter arranged downstream of the three-way catalytic converter , and a secondary air supply , which method comprises the following steps: ∘ operating the internal combustion engine with a stoichiometric combustion air ratio (λ E = 1), wherein the soot particles formed during the combustion are retained in the particle filter , ∘ determining a loading state of the particle filter , ∘ initiating a regeneration of the particle filter if the need for a regeneration of the particle filter is identified in the determination of the loading state, ∘ raising the exhaust-gas temperature (T EG ) in a heating phase by means of operation of the internal combustion engine with a substoichiometric, rich combustion air ratio (λ E < 1) and simultaneous introduction of secondary air into the exhaust-gas duct upstream of the particle filter , wherein the unburned fuel components are exothermically converted in the exhaust-gas duct or on the particle filter with the secondary air until a regeneration temperature (T R ) is attained; ∘ regenerating the particle filter , wherein the internal combustion engine is operated with a stoichiometric combustion air ratio (λ E = 1) and secondary air is introduced into the exhaust-gas duct , such that superstoichiometric exhaust gas (λ M > 1) is formed downstream of the introduction of secondary air, wherein ∘ the quantity of secondary air introduced into the exhaust-gas channel is controlled in closed-loop fashion by means of a lambda probe downstream of an introduction point for the secondary air and upstream of the particle filter . ∘ operating the internal combustion engine with a stoichiometric combustion air ratio (λ E = 1), wherein the soot particles formed during the combustion are retained in the particle filter , ∘ determining a loading state of the particle filter , ∘ initiating a regeneration of the particle filter if the need for a regeneration of the particle filter is identified in the determination of the loading state, ∘ raising the exhaust-gas temperature (T EG ) in a heating phase by means of operation of the internal combustion engine with a substoichiometric, rich combustion air ratio (λ E < 1) and simultaneous introduction of secondary air into the exhaust-gas duct upstream of the particle filter , wherein the unburned fuel components are exothermically converted in the exhaust-gas duct or on the particle filter with the secondary air until a regeneration temperature (T R ) is attained; ∘ regenerating the particle filter , wherein the internal combustion engine is operated with a stoichiometric combustion air ratio (λ E = 1) and secondary air is introduced into the exhaust-gas duct , such that superstoichiometric exhaust gas (λ M > 1) is formed downstream of the introduction of secondary air, wherein ∘ the quantity of secondary air introduced into the exhaust-gas channel is controlled in closed-loop fashion by means of a lambda probe downstream of an introduction point for the secondary air and upstream of the particle filter . <EOS>