中文摘要：

针对制造商应如何参与再制造竞争的问题，构建基于古诺竞争和消费者异质需求的两周期决策模型，求出了制造商进入再制造品市场时制造商和在位再制造商的生产决策区间，并与制造商不进入再制造品市场的情况相比较，分析了制造商的再制造策略对在位再制造商的影响，最后通过算例讨论了消费者行为对利润的影响．研究表明，制造商参与再制造竞争时，根据旧产品回收率和再制造节约成本的大小，制造商和再制造商可选择三个决策区间，每个决策区间包含六种不同的生产策略．回收率大于阈值时，随着回收率的增加制造商更倾向于进入再制造品市场．消费者对再制造品的接受程度较高时，回收旧产品较多的企业利润更大．

英文摘要：

This paper studies how the original equipment manufacturer（OEM） participates in remanufacturing competition. Based on the Cournot competition and the consumers＇ heterogeneous demand, a two-period decision model is developed. The production decision intervals of the OEM and the existing remanufacturer（ER） in a duopoly remanufacturing environment were identified. The effect of the OEM＇s remanufacturing strategies on the ER is analyzed by comparing with the results in the monopoly remanufacturing environment. Finally the effect of consumers＇ behavior on the profits of the contestants is discussed by numerical examples. The results reveal that with the OEM＇s remanufacturing competition, the OEM and the ER can choose three different decision intervals each of which contains six different production strategies according to the variation of the remanufacturing savings and the recovery rate. When the recovery rate exceeds the threshold, the OEM is more likely to enter the remanufactured products market with the recovery rate increasing. If more and more consumers accept remanufactured products, the one which collects more used products gains more profits.