Abstract: A concrete mixer vehicle includes a chassis, a cab coupled to the chassis, a drum assembly coupled to the chassis, and a module coupled to the chassis and positioned rearward of the drum assembly. The module includes a prime mover, a cooling system, and a hood. The hood has a first end positioned proximate the drum assembly, an opposing second end positioned proximate a rear end of the chassis, and a top surface. The hood defines an internal cavity within which the prime mover and the cooling system are disposed. The first end defines an inlet airflow cavity. The inlet airflow cavity has a bottom surface and an air inlet positioned between the top surface and the bottom surface. The air inlet connects the inlet airflow cavity to the internal cavity.

Abstract: A concrete mixer vehicle includes a trainer cab that is coupled to a chassis and arranged laterally outwardly relative to a main cab. The trainer cab includes: (a) a seat mounted to a recessed mounting floor that is arranged rearward of a wheel well, (b) a support beam that includes an air vent and air flow path integrated into the support beam, or (c) a windshield wiper with a park location that is arranged between a trainer cab column and a superstructure support so that the windshield wiper is hidden from being viewed from within the main cab.

Abstract: A concrete mixer vehicle includes a chassis, a cab coupled to the chassis, a drum assembly coupled to the chassis, and a module coupled to the chassis and positioned rearward of the drum assembly. The module includes a prime mover, a cooling system, and a hood. The hood has a first end positioned proximate the drum assembly, an opposing second end positioned proximate a rear end of the chassis, and a top surface. The hood defines an internal cavity within which the prime mover and the cooling system are disposed. The first end defines an inlet airflow cavity. The inlet airflow cavity has a bottom surface and an air inlet positioned between the top surface and the bottom surface. The air inlet connects the inlet airflow cavity to the internal cavity.

Abstract: An engine module for a mixer vehicle includes an engine, a cooling system, and a hood. The cooling system includes a radiator fluidly coupled to the engine and a fan assembly. The fan assembly includes a fan. The hood includes a housing and a door. The housing has a first end configured to be positioned proximate a mixer drum assembly and a second end configured to be positioned proximate a rear end of a chassis of the mixer vehicle. The housing defines an internal cavity within which the engine and the cooling system is disposed. The first end defines an inlet airflow cavity having a bottom surface and an air inlet. The second end defines an opening. The door is pivotally coupled to the second end and positioned to selectively enclose the opening.

Abstract: A hydraulic system for a concrete mixer vehicle including an electronically controlled variable displacement hydraulic pump, a distribution manifold fluidly coupled to the hydraulic pump, a hydraulic fan motor coupled to a fan and fluidly coupled to the distribution manifold, an auxiliary system fluidly coupled to the distribution manifold, and a controller structured to: determine a total system demand based at least in part on a fan motor demand and an auxiliary system demand, adjust a displacement of the hydraulic pump to satisfy the total system demand, and operate the hydraulic pump at a pump speed to satisfy the total system demand.

Abstract: An engine module for a mixer vehicle includes an engine, a cooling system, and a hood. The cooling system includes a radiator fluidly coupled to the engine and a fan assembly. The fan assembly includes a fan. The hood includes a housing and a door. The housing has a first end configured to be positioned proximate a mixer drum assembly and a second end configured to be positioned proximate a rear end of a chassis of the mixer vehicle. The housing defines an internal cavity within which the engine and the cooling system is disposed. The first end defines an inlet airflow cavity having a bottom surface and an air inlet. The second end defines an opening. The door is pivotally coupled to the second end and positioned to selectively enclose the opening.

Abstract: A hydraulic system for a concrete mixer vehicle including an electronically controlled variable displacement hydraulic pump, a distribution manifold fluidly coupled to the hydraulic pump, a hydraulic fan motor coupled to a fan and fluidly coupled to the distribution manifold, an auxiliary system fluidly coupled to the distribution manifold, and a controller structured to: determine a total system demand based at least in part on a fan motor demand and an auxiliary system demand, adjust a displacement of the hydraulic pump to satisfy the total system demand, and operate the hydraulic pump at a pump speed to satisfy the total system demand.